SPU0410HR5H - KNOWLES ACOUSTICS

MEMS MICROPHONES

SPECIALTY MICROPHONES

BOOMS AND SENSORS

ACCELEROMETERS & ACOUSTIC DAMPER SCREENS

SPECIALTY SPEAKERS

CUSTOM ASSEMBLIES

ACOUSTIC SOFTWARE

MICROPHONE AND SPEAKER BASICS

Acoustic Interface Design Guide 2010

2www.knowles.com

Discover

Knowles Acoustics offers you a full

spectrum of MEMS microphones,

specialty microphones, balanced

armature speakers, custom

assemblies, and sound conditioning

software. This application guide will

help you select the right acoustic

interface solution.

your next acoustic interface solution.

Knowles reserves the right to change designs and speciﬁcations without prior notice. Should a safety concern

arise regarding this product, please contact us immediately for technical consultation. Knowles cannot assume

responsibility for any problems arising out of the use of this product. This information does not convey any

license by any implication under any patents or other right.

3www.knowles.com

We can help you

every step of the way.

It all starts with your application. Or it starts with an idea you may

have. For support from concept to design to sub-assembly, or any step

along the way, just call us. Or visit us at www.knowles.com

MICROPHONES - MEMS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-6

SPECIALTY TRANSDUCERS - MICROPHONES . . . . . . . . . . . . . . . . 7-11

SPECIALTY TRANSDUCERS - BOOMS & SENSORS . . . . . . . . . . . . .12-15

ACCELEROMETERS & ACOUSTIC DAMPER SCREENS . . . . . . . . . . . . . 16

SPECIALTY TRANSDUCERS - SPEAKERS . . . . . . . . . . . . . . . . . . 17-26

CUSTOM ASSEMBLIES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27

ACOUSTIC SOFTWARE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28

MICROPHONE AND SPEAKER BASICS . . . . . . . . . . . . . . . . . . . . 29-30

Table of Contents

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MICROPHONES – MEMS

•New MaxRF models eliminate GSM/TDMA burst noise and provide wide-band RF noise suppression

•UltraMini footprint - less than 11.5mm2(SPU Series)

•Slim UltraMini footprint - less than 8.5mm2(SPQ Series)

•Digital mics eliminate analog noise

•Integrated designs with differential or switchable gain

•Zero Height Mic™for thinnest ever designs

SiSonic™MEMS Microphones

Built on our CMOS/MEMS technology platform, the SiSonic™silicon-based

MEMS microphone series is a step ahead of the competition with product

shipments exceeding 1 billion units to date. The proven and evolving design

series continues to support high-performance, high-density innovation

in such applications as cell phones, smart phones, laptop computers,

sensors, digital still cameras, portable music players, and other portable

electronic devices.

Design variables include ever-smaller sizes, lower proﬁles and mounting

options, increased output capacities, and new digital audio options that

eliminate analog noise. For manufacturers, surface mount designs eliminate

off-line subassembly production costs. Customized designs are supplied on

tape-and-reel and can be run through standard automatic pick-n-place

equipment during in-line surface mount manufacturing.

The microphones can also be integrated with our patented IntelliSonic™

software and special porting designs to provide a precisely customized sound.

Part Numbering

MICROPHONES – MEMS

Model Description Directivity Supply Voltage Sensitivity @1kHz Output Maximum

(min-max) RF Immunity (dB re1V/1Pa) Impedance Current

(Ohms) Drain (mA)

SPUL409HE5H Unity Gain Omni 1.5 to 3.6v Enhanced -42.0 <300 <0.25

SPU0409HD5H Unity Gain Omni 1.5 to 3.6v Standard -42.0 <100 <0.25

SPU0410HR5H Unity Gain Omni 1.5 to 3.6v Max-RF -42.0 <400 <0.25

SPU0414HR5H Ampliﬁed Omni 1.5 to 3.6v Max-RF -22.0 <400 <0.35

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Note: All performance curves are typical

•New Ultra Mini with footprint of 11mm2

•Flexible designs available with/without RF ﬁltering

and built in ampliﬁer

•Ideal for miniature consumer electronics

Ultra Mini Package

Model Description Directivity Supply Voltage Sensitivity @1kHz Output Maximum

(min-max) (dB re1V/1Pa) Impedance Current

(Ohms) Drain (mA)

SPM0404UD5 Unity Gain Omni 1.5 to 3.6v -42.0 <100 <0.25

•High frequency functionality

•Wide range of applications

•Micro-sized sensing and actuation

Ultrasonic Acoustic Sensor

Derived from our industry-leading MEMS silicon surface mount microphone technology,

our new ultrasonic sensor designs function on a high frequency band. Sensor designs

are possible across a wide spectrum of applications requiring highly miniaturized

solutions for sensing and actuation/signaling.

Model Description Directivity Supply Voltage Sensitivity @1kHz Output Maximum

(min-max) RF Immunity (dB re1V/1Pa) Impedance Current

(Ohms) Drain (mA)

SPQ0410HE5H Unity Gain Omni 1.5 to 3.6v Enhanced -42.0 <400 <0.25

•24% reduction of footprint (8.4mm2) from

the Ultra-Mini Package

•Designs available with/without RF Filtering

•Ideal for miniature consumer electronics

Slim-Ultra Mini Package

TYPICAL SENSITIVITY RELATIVE TO 1 kHz (dB)

FREQUENCY (Hz)

-5

-10

-15

-20

2 3 4 5 6 7 8 9 2 3 4 5 6 7 8 9

10k 100k1k

TYPICAL SENSITIVITY RELATIVE TO 1 kHz (dB)

FREQUENCY (Hz)

-5

-10

-15

-20

2 3 4 5 6 7 8 9 2 3 4 5 6 7 8 9

1k 10k100

TYPICAL SENSITIVITY RELATIVE TO 1 kHz (dB)

FREQUENCY (Hz)

-5

-10

-15

-20

2 3 4 5 6 7 8 9 2 3 4 5 6 7 8 9

1k 10k100

6www.knowles.com

Note: All performance curves are typical

Zero Height Mic™SiSonic

STANDARD MOUNT

Zero Height Mic™

•Zero Height Mic™SiSonic shrinks product thickness by up to 30%

•Minimizes distance between PCB and mobile device housing

•Ideal for microphone placement on reverse side of PCB, while maintaining acoustic port on top side of mobile device, for clamshell phone designs

•Enables the thinnest, highest density product designs

Model Description Directivity Supply Voltage Sensitivity @1kHz Output Maximum

(min-max) RF Immunity (dB re1V/1Pa) Impedance Current

(Ohms) Drain (mA)

SPM0404LE5H Unity Gain Omni 1.5 to 3.6v Enhanced -38.0 <200 <0.25

SPM0408LE5H Ampliﬁed Omni 1.5 to 3.6v Enhanced -18.0 <200 <0.35

SPM0410LR5H Unity Gain Omni 1.5 to 3.6v Max-RF -38.0 <400 <0.25

SPU0409LE5H Unity Gain Omni 1.5 to 3.6v Enhanced -38.0 <200 <0.25

SPU0410LR5H Unity Gain Omni 1.5 to 3.6v Max-RF -38.0 <400 <0.25

SPK0413LM4H Digital Omni 1.6 to 3.6v Digital -26.0 (dBFS/1Pa) 100pf <0.65

Enhanced Maximum Load

Thin Mini Package

•Thin Mini SiSonic with a footprint less than 18mm2reduces

manufacturing costs and brings greater design ﬂexibility

•Rugged, solid-state design process for stable acoustic

performance under extreme conditions such as temperature,

shock and vibration

•Digital - Pulse Density Modulation (PDM) device available,

which has an integrated sleep mode and is compatible with

stereo input applications

Model Description Directivity Supply Voltage Sensitivity @1kHz Output Maximum

(min-max) RF Immunity (dB re1V/1Pa) Impedance Current

(Ohms) Drain (mA)

SPM0404HD5H Unity Gain Omni 1.5 to 3.6v Standard -42.0 <100 <0.25

SPM0406HE3H Differential Omni 1.5 to 5.5v Enhanced -22.0 <500 <0.50

SPM0407HE3H Switchable Gain Omni 1.5 to 5.5v Enhanced -22.0 <300 <0.37

SPM0408HD5H Ampliﬁed Omni 1.5 to 3.6v Standard -22.0 <100 <0.35

SPM0404HE5H Unity Gain Omni 1.5 to 3.6v Enhanced -42.0 <200 <0.25

SPM0405HD4H Digital Omni 1.6 to 3.6v Digital -26.0 (dBFS/1Pa) 100pf <0.60

Standard Maximum Load

SPM0408HE5H Ampliﬁed Omni 1.5 to 3.6v Enhanced -22.0 <200 <0.35

SPM0410HR5H Unity Gain Omni 1.5 to 3.6v Max-RF -42.0 <400 <0.25

MICROPHONES – MEMS

TYPICAL SENSITIVITY RELATIVE TO 1 kHz (dB)

FREQUENCY (Hz)

-5

-10

-15

-20

2 3 4 5 6 7 8 9 2 3 4 5 6 7 8 9

1k 10k100

TYPICAL SENSITIVITY RELATIVE TO 1 kHz (dB)

FREQUENCY (Hz)

-5

-10

-15

-20

2 3 4 5 6 7 8 9 2 3 4 5 6 7 8 9

1k 10k100

GA SERIES

– Microphone

Omni-Directional 2.00 x 2.00 x 4.00 (mm)

The GA Series Microphone is a brand new microphone design with

unique size and shape. Its elongated 2mm x 2mm x 4mm dimensions

are ideal for directional applications, allowing you ultimate ﬂexibility in

terminal pad area placement. And the GA is using the new '38' circuit

providing excellent sensitivity and noise performance for package size.

The GA targets space efﬁciency in BTE and ITE designs; BTE: End-to-end

conﬁguration provides 8mm spacing for directionality while ITE: 20%

smaller cross sectional area than FG Series.

•Compact size providing superior ﬁt rates (2mm x 2mm x 4mm)

•Excellent sensitivity and noise performance for package

•Integral RFI suppression

•Exceptionally low vibration sensitivity

•Multiple acoustic port placement versions

SPECIALTY TRANSDUCERS – Microphones

The Specialty Transducer (ST) product line consists of miniature microphones,

speakers, and assemblies. Hundreds of design possibilities can be applied to

your product challenge with our high-performance microphone designs. Ideal for

new product ideas that require premium audio and very small form factors,

solutions include noise canceling, omni-directional and unidirectional performance.

Other variables include size, shape, ampliﬁcation, sensitivity, low noise, and

resistance to vibration and mechanical shock.

ST components and assemblies are unique in ﬁt, form and function. Our products

are designed into high value applications in markets such as the following:

•Communications – headsets, handsets, earpieces, telephony, voice recognition, emergency services,

military, surveillance

•Pro audio – in-ear speakers, lapel microphones, boom microphones

•Medical and more – sensors, audiometers, medical implants

Model Sensitivity @ 1kHz DC Supply (Vdc) Max. Ampliﬁer Max. “A” Weighted Nominal Output

(dB re1V/0.1Pa) Current Drain (uA) Noise (1 kHz Impedance (Ohms) Comments

Equivalent SPL)

GA38-30774-000 -53.0±3 1.3 nom. 1.6 max 25 24.0 dB 4400 Tubeless, Port on Bottom,

Terminal Pads on Cover

GA38-30775-000 -53.0±3 1.3 nom. 1.6 max 25 25.0 dB 4400 Tubeless, Port on End,

Terminal Pads on End

GA38-30776-000 -53.0±3 1.3 nom. 1.6 max 25 25.0 dB 4400 Tube Version

(0.8mm x 0.74mm ID),

Terminal Pads on End

Specialty Transducer Microphones

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Note: All performance curves are typical

SENSITIVITY IN dB RELATIVE TO 1.0V/0.1 Pa

FREQUENCY (Hz)

-40dB

-45

-50

-55

-60

-65

-70

-75

-80

1k 10k100

3 4 5 6 7 8 9 2 3 4 5 6 7 8 9 2 3 4 5 6 7 8 9 2

SPECIALTY TRANSDUCERS – Microphones

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Note: All performance curves are typical

FG/DFG SERIES

– Microphone

Omni-Directional (FG), Directional (DFG) 2.56 DIA x 2.56 (mm)

The FG Series microphone is the world’s smallest electret condenser microphone.

Its cylindrical shape and compact size facilitate compact designs. The FG can

also be used in directional applications as a matched omni-directional pair.

EM SERIES

– Microphone

Omni-Directional 3.63 x 3.63 x 2.28 (mm)

The EM is a popular, alternative omni-directional microphone. The EM can also

be used in directional applications as a matched omni-directional pair.

•Smallest microphone option

•High resistance to mechanical shock

•Exceptionally low vibration sensitivity

•Various responses available

•Integral RFI suppression

SENSITIVITY IN dB RELATIVE TO 1.0V/0.1 Pa

FREQUENCY (Hz)

•High resistance to mechanical shock

•Improved RFI and EMI

•Undamped, screen damped, and internally damped responses

•Numerous port locations

•Wide range of frequency responses

SENSITIVITY IN dB RELATIVE TO 1.0V/0.1 Pa

FREQUENCY (Hz)

Sensitivity @ 1kHz Max. Ampliﬁer “A” Weighted Noise Nominal Output

Model (dB re1V/0.1Pa) DC Supply (Vdc) Current Drain (uA) * 1kHz Equivalent SPL Impedance (Ohms) Comments

** re 1Vrms

FG-23329-D65 -53.0±3 1.3 nom. 3.0 max 50 30.0 dB* 4400 RFI Improved Version

FG-23329-P07 -53.0±3 1.3 nom. 3.0 max 50 30.0 dB* 4400 3-Wire, 1015mm Shielded Cable

FG-23629-P16 -53.0±3 1.3 nom. 3.0 max 50 28.0 dB* 4400 3-Wire, 25.4mm Litz Wires

FG-23629-D65 -53.0±3 1.3 nom. 3.0 max 50 28.0 dB* 4400 RFI Improved Version

FG-23652-D65 -53.0±3 1.3 nom. 3.0 max 50 28.0 dB* 4400 RFI Improved Version

FG-23652-P16 -53.0±3 1.3 nom. 3.0 max 50 28.0 dB* 4400 3-Wire, 25.4mm Litz Wires

FG-23742-D36 -63.0±3 1.3 nom. 3.0 max 50 36.0 dB* 4400 3-Wire, 25.4mm Litz Wires

FG-26163-D65 -58.0±3 1.3 nom. 3.0 max 50 -93.0 dB** 4400 RFI Improved Version

6dB/Octave Ski-Slope

DFG-30344-000 -67.0±3 1.3 nom. 3.0 max 50 -93.0 dB** 700 Directional, Super Cardioid

DFG-30852-000 -69.0±3 1.3 nom. 3.0 max 50 -93.0 dB** 1700 Directional, Cardioid

DFG-30851-000 -73.0±3 1.3 nom. 3.0 max 50 -93.0 dB** 1700 Directional, Noise Canceling

-40

-50

-60

-70

-80 2 3 4 5 6 7 8 9

100 10k

2 3 4 5 6 7 8 9

-40

-50

-60

-70

-80

2 3 4 5 6 7 8 9

100 1k 10k

2 3 4 5 6 7 8 9

Sensitivity @ 1kHz Max. Ampliﬁer “A” Weighted Noise Nominal Output

Model (dB re1V/0.1Pa) DC Supply (Vdc) Current Drain (uA) * 1kHz Equivalent SPL Impedance (Ohms) Comments

** re 1Vrms

EM-23046-P16 -56.0±3 1.3 nom. 3.0 max 50 31.0 dB* 4400 3-Wire, 25.4mm Litz Wire

Standard Response

EM-23069-000 -56.0±3 1.3 nom. 1.6 max 50 33.0 dB* 4400 Tubeless

Standard Response

EM-30081-D65 -68.0±3 1.3 nom. 3.0 max 50 -98.0 dB** 4400 12dB/Octave Ski-Slope

SPECIALTY TRANSDUCERS – Microphones

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Note: All performance curves are typical

EK/EL SERIES

– Microphone

Omni-Directional (EK), Unidirectional (EL) 4.00 x 5.59 x 2.28 (mm)

EK omnidirectional microphones provide a unique combination of size, performance

and value. Its high electroacoustic sensitivity and low noise make this microphone

an excellent choice for applications where space allows. These popular microphones

are available in many model varieties.

NR SERIES

– Microphone

Noise Canceling 4.00 x 5.59 x 2.28 (mm)

The NR Series close talking microphones deliver state-of-the-art noise canceling performance.

NR microphones are used as headset microphones in the most demanding communication

and speech recognition environments. The NR Series microphones are available in boom

microphone packages. (See the Specialty Transducers - Booms & Sensors section for details.)

•Integral FET ampliﬁer

•Diaphragm responds to pressure differential giving

high rejection of background noise

•Withstands severe environmental conditions

•Low vibration sensitivity

•High electoacoustical sensitivity

•Superior noise canceling performance

•Lead attachment available

SENSITIVITY IN dB RELATIVE TO 1.0V/0.1 Pa

FREQUENCY (Hz)

•High resistance to mechanical shock

•Available with RFI suppression

•Various port locations available

•Wide range of frequency responses

•High S/N performance

SENSITIVITY IN dB RELATIVE TO 1.0V/0.1 Pa

FREQUENCY (Hz)

Model Sensitivity @ 1kHz DC Supply (Vdc) Max. Ampliﬁer Max. “A” Weighted Nominal Output

(dB re1V/0.1Pa) Current Drain (uA) Noise (dBV) Impedance (Ohms) Comments

NR-23158-000 -49.0±3 1.3 nom. 10 max 50 -100 4400 3-Wire

NR-23159-000 -65.0±3 1.3 nom. 10 max 200 -100 2500 2-Wire

NR-23160-000 -52.0±3 1.3 nom. 10 max 200 -100 2500 2-Wire

NR-25994-000 -49.0±3 1.3 nom. 10 max 50 -100 4400 3-Wire

NR-25994-D63 -55.0±4 1.3 nom. 10 max 300 -100 2000 2-Wire

NR-30610-D63 -59.0±3 3.0 nom. 10 max 550 -100 2000 2-Wire

-40

-50

-60

-70

-80

2 3 4 5 6 7 8 9

10k

100 1k

2 3 4 5 6 7 8 9

56789

-40

-50

-60

-70

-80 2 3 4 5 6 7 8 9

10k

100 1k

2 3 4 5 6 7 8 9

Model Sensitivity @ 1kHz DC Supply (Vdc) Max. Ampliﬁer “A” Weighted Noise Nominal Output

(dB re1V/0.1Pa) Current Drain (uA) * 1kHz Equivalent SPL Impedance (Ohms) Comments

** re 1Vrms

EK-23024-C36 -53.0±2 1.3 nom. 10 max 50 26.0 dB* 4400 RFI Improved Version

Standard Response

EK-23024-P07 -53.0±2 1.3 nom. 10 max 50 26.0 dB* 4400 3-Wire, 1 m Shielded Cable

Standard Response

EK-23027-C36 -53.0±2 1.3 nom. 10 max 50 26.0 dB* 4400 RFI Improved Version

Standard Response

EK-23028-C36 -57.0±3 1.3 nom. 10 max 50 -100.0 dB** 4400 RFI Improved Version

6dB/Octave Ski-Slope

EK-23033-C36 -53.0±2 1.3 nom. 10 max 50 26.0 dB* 4400 RFI Improved Version

Broadband Response

EK-23132-000 -53.0±2 1.3 nom. 10 max 50 26.0 dB* 4400 Broadband Response

EK-23133-C36 -53.0±2 1.3 nom. 10 max 50 26.0 dB* 4400 RFI Improved Version

Broadband Response

EK-23142-C37 -53.0±2 1.3 nom. 10 max 50 26.0 dB* 4400 RFI Improved Version

Broadband Response

EL-23078-000 -53.0±2 1.3 nom. 10 max 50 -100.0 dB** 4400 Dual Port Uni-Directional

SPECIALTY TRANSDUCERS – Microphones

10 www.knowles.com

Note: All performance curves are typical

BJ SERIES

– Microphone

Omni-Directional, Noise Canceling 7.87 x 5.59 x 4.01 (mm)

Knowles’ Magnetic Microphones (BJ Series) are based on balanced armature

technology and are self-shielded against external magnetic ﬁelds. The

microphones offer high efﬁciency, stability, and reliability and are small in size.

The diaphragm of the BJ Series responds to pressure differential, giving high

rejection of background noise. Both face and edge ports are offered. In addition,

there is a short distance between front and back ports resulting in improved

noise rejection up to higher frequencies.

BL SERIES

– Omni-Directional Microphone

Knowles’ Piezo Ceramic Microphones (BL Series) are rugged, stable and versatile.

BL microphones are available in three different package sizes: standard, thin or

0.5" cylindrical shell and cable assembly. Both communication and broadband

frequency response versions are offered. In addition, BL microphones have high

vibration sensitivity and may be used as accelerometers.

•Balanced armature technology

•High efﬁciency, stability and reliability

•Self-shielded against external magnetic ﬁelds

•Face and edge ports

•Diaphragm responds to pressure differential giving high

rejection of background noise

•Short distance between front and back ports resulting in

improved noise rejection up to higher frequencies

•High sensitivity

•Wide frequency range

•Integral FET ampliﬁer

•High resistance to mechanical shock

•Various responses

•Two case sizes available

Model Dimensions Sensitivity @ 1kHz DC Supply Max. Ampliﬁer Nominal Output

(mm) (dB re1V/0.1Pa) (Vdc) Current Drain (uA) “A” Weighted Noise Impedance (Ohms) Comments

BL-21671-000 7.87 x 5.54 x 4.06 -54.0±3 1.3 50 32.0 dB 13000 Standard Response

BL-21671-140 7.87 x 5.84 x 4.06 -54.0±4 1.3 50 32.0 dB 13000

Faster Overpressure Recovery

Standard Response

BL-21785-000 7.87 x 5.54 x 2.24 -69.0±3 3 160 34.0 dB 4000 Broadband Response

BL-21994-000 25.5 -69.0±3 3 160 34.0 dB 4000 965mm Shielded Cable

Broadband Response

BL-23497-000 25.5 -69.0±3 3 160 34.0 dB 4000 34.3mm Leads

Broadband Response

BL-27046-000 7.87 x 5.54 x 2.24 -69.0±3 1.3 160 34.0 dB 4000 Broadband Response

Model Directivity Port Location Nominal Impedance Nominal DC Resistance

at 1kHz (Ohms) at 20° C (Ohms)

BJ-21590-000 Omni-Directional OJn 3900 900

BJ-28411-000 Noise Canceling Dual 300 75.5

SENSITIVITY IN dB RELATIVE TO 1.0V/0.1 Pa

FREQUENCY (Hz)

-55dB

-60

-65

-70

-75

-80

-85

-90

-95 2 3 4 5 6 7 8 9

10k100 1k

2 3 4 5 6 7 8 9

SENSITIVITY IN dB RELATIVE TO 1.0V/0.1 Pa

FREQUENCY (Hz)

-35dB

-40

-45

-50

-55

-60

-65

-70

-75

2 3 4 5 6 7 8 9

10k100 1k

2 3 4 5 6 7 8 9

11www.knowles.com

Note: All performance curves are typical

WP SERIES

– Waterproof Microphone

Omni-Directional, Noise Canceling 3.99 x 5.56 x 2.21 (mm)

The WP Series’ form factor is a very small size with low vibration sensitivity.

The excellent noise canceling performance is useful for sensors and instrumentation.

The WP Series are available in boom microphone packages. (See the FB Series and

PNR/PWP Series for details.)

MR SERIES

– Waterproof Microphone

Omni-Directional

The MR Series Assemblies consist of a microphone element attached to a

bellows assembly. They may be panel mounted, attached for boom applications,

and are suitable for outdoor use or repeated submersion.

•Highly waterproof – no loss of performance after immersion

in 15-20 m water

•Corrosion resistant

•Withstands explosive decompression

•Design proven in rugged environments

•Cable wire attached

•High resistance to mechanical shock

•Acoustically transparent bellows

•Resists effects of mud, sand, and salt encrustation

•Waterproofed to submersion in 1m water

•Close-talking (noise-canceling)

•Corrosion resistant

•Withstands explosive decompression

•Excellent environmental performance

•High resistance to mechanical shock

SENSITIVITY IN dB RELATIVE TO 1.0V/0.1 Pa

FREQUENCY (Hz)

SENSITIVITY IN dB RELATIVE TO 1.0V/0.1 Pa

FREQUENCY (Hz)

Model Sensitivity @ 1kHz Directivity DC Supply (Vdc) Max. Ampliﬁer “A” Weighted Noise Nominal Output

(dB re1V/0.1Pa) Current Drain (uA) * 1kHz Equivalent SPL Impedance (Ohms) Comments

** re 1Vrms

WP-23501-000 -54.0±3 Noise Canceling 1.3 nom. 10 max 300 -100 dB** 2500 2-Wire

WP-23502-000 -52.0±3 Omni-Directional 1.3 nom. 10 max 50 26.0 dB* 4400 3-Wire

WP-23502-P07 -52.0±3 Omni-Directional 1.3 nom. 10 max 50 26.0 dB* 4400 3-Wire, w/ 1m

Shielded Cable

WP-23502-P16 -52.0±3 Omni-Directional 1.3 nom. 10 max 50 26.0 dB* 4400 3-Wire, w/ 25.4mm

Litz Wires

WP-23849-C36 -52.0±3 Omni-Directional 1.3 nom. 10 max 50 26.0 dB* 4400 3-Wire, RFI Improved

+ Extended Response

WP-25993-D63 -55.0±4 Noise Canceling 1.3 nom. 10 max 300 -100 dB** 2000 2-Wire

-35

-45

-55

-65

-75

2 3 4 5 6 7 8 9

10k

100 1k

2 3 4 5 6 7 8 9

-40

-50

-60

-70

-80

2 3 4 5 6 7 8 9

10k100 1k

2 3 4 5 6 7 8 9

Model Dimensions Sensitivity @ 1kHz DC Supply Max. Ampliﬁer Nominal Output

(mm) (dB re1V/0.1Pa) (Vdc) Current Drain (uA) “A” Weighted Noise Impedance (Ohms) Comments

MR-23151-000 22.12 DIA x 9.3 -87.0±3 N/A N/A 30.0 dB 300 2-Wire, 193mm Leads

MR-23793-000 22.12 DIA x 11.43 -60.0±4 1.3 100 31.0 dB 2500 3-Wire, 201mm Leads

MR-28406-000 22.12 DIA x 7.6 -60.0±3 1.3 50 30.0 dB 3500 3-Wire, 202mm Leads

SPECIALTY TRANSDUCERS – Microphones

12 www.knowles.com

Note: All performance curves are typical

SPECIALTY TRANSDUCERS – Booms & Sensors

Knowles' boom microphones are designed for either ﬂexible or rigid conﬁgurations and

offer such performance options as noise rejection and high-frequency crossover of near

and far ﬁeld responses. Lengths and end terminations are customized to meet your

application needs. Marketers of headsets and audio systems often seek Knowles boom

designs. Collaboration with commercial, governmental and industrial designers is

producing new helmet applications for aircraft, military, ﬁrst responder and high-noise

manufacturing environments.

•Standard and waterproof

•Flexible and rigid styles

•Boom housing available in plastic and metal

•Customized lengths and end terminations

Booms & Sensors

Part Numbering

FB-F I -30026-000

Product Description

FB: Flexible Boom

Boom Diameter

A: 2.3mm OD Positionable Cable

B: 2.7mm OD Gooseneck (w/shrink tube)

D: 4.2mm OD Gooseneck (w/shrink tube)

E: 5.4mm OD Gooseneck (w/shrink tube)

F: 5.9mm OD Gooseneck (w/shrink tube)

H: 5.0mm OD Gooseneck (w/shrink tube)

M: 1.0mm OD Positionable Tube

Head Series

I: BJ Housing

M: NR/WP Waterproof Housing

O: Original Housing

U: FG/DFG Micro Housing

W: Plastic Housing w/ Sinter Disc

Model #

Knowles Internal

Reference Only

3 412

VWP-F-30109-000

Product Description

V: Value Added

Element Series

EK, EA, WP

Housing Series

B: Over Molded

C: Custom Design

F: Plastic Fixed Housing

H: ESD Shielded Plastic

Model #

Knowles Internal

Reference Only

3 412

www.knowles.com

Note: All performance curves are typical

SPECIALTY TRANSDUCERS – Booms & Sensors

• Designed for military customers who are looking for a noise canceling non-power element in robust platform with

waterprooﬁng options from 1m down to 10m (based on IP67 rating)

– Also available in Omni-Directional

– Meets MIL-STD-810F standards

• Plastic head design with metal ﬂexible boom

– Available in 5.9mm down to 4.2mm diameter metal ﬂexible boom

•Military forces, Special Operations, Security and Police and other military communication headsets

– Mounted and un-mounted ground forces, armor units

• Designed for the BJ series elements

Model *Rating Microphone Directivity Boom Length Exit Wire Nominal Boom Microphone

Tip-To-Tip (mm) Length (mm) Diameter (mm) Conﬁguration

Element

FB-EI-30026-000 1m BJ-28471-000 Noise Canceling 172 60 5.4 2-Wire

(150ΩImpedance)

FB-EI-30426-000 1m BJ-28486-000 Noise Canceling 172 60 5.4 2-Wire

(30ΩImpedance)

I SERIES

• Designed for military customers who are looking for a noise canceling electret element in robust waterproof housing

– Available in Omni-Directional

– Waterproof options from 1m down to 20m (per IP67, IP68 and MIL-STD-810F)

• Plastic head design with metal ﬂexible boom

– Available in 6.0mm down to 2.7mm diameter metal ﬂexible boom

• Military forces, Special Operations, Security, Fire and Police and other high end communication headsets

– Over the ear, earcup or helmet designs for mounted and non-mounted ground forces

• Designed for EK, NR and WP series elements

Model *Rating †Microphone Directivity Boom Length Exit Wire Nominal Boom Microphone

Tip-To-Tip (mm) Length (mm) Diameter (mm) Conﬁguration

Element

FB-EM-30342-000 1m NR-25994-D63 Noise Canceling 167 60 5.4 2-Wire

FB-EM-30343-000 3m WP-25993-D63 Noise Canceling 167 60 5.4 2-Wire

FB-EM-30344-000 10m NR-25994-D63 Noise Canceling 167 60 5.4 2-Wire

FB-EM-30345-000 20m NR-25994-D63 Noise Canceling 167 60 5.4 2-Wire

FB-EM-30346-000 1m EK-23132-C36 Omni-Directional 167 60 5.4 2-Wire

FB-EM-30348-000 10m EK-23132-C36 Omni-Directional 167 60 5.4 2-Wire

FB-EM-30349-000 20m EK-23132-C36 Omni-Directional 167 60 5.4 2-Wire

M SERIES

*Rating done to IP67 test criteria

*Rating done to IP67 test criteria † WP-Series elements are waterproof

SPECIALTY TRANSDUCERS – Booms & Sensors

14 www.knowles.com

Note: All performance curves are typical

•Designed for military customers who are looking for a noise canceling electret element in a metal EMI shielded housing

– Available in Omni-Directional

– Waterproof options down to 3m using WP elements

•Metal head design with metal ﬂexible boom

– Available in 8.0mm down to 4.2mm diameter metal ﬂexible boom

•Military forces, Special Operations, Security, Fire and Police and other communication headsets

– Over the ear, earcup or helmet designs for mounted and non-mounted ground forces

• Designed for the EK, NR and WP elements series

Model *Rating †Microphone Directivity Boom Length Exit Wire Nominal Boom Microphone

Tip-To-Tip (mm) Length (mm) Diameter (mm) Conﬁguration

Element

FB-DO-23511-000 3m WP-23501-000 Noise Canceling 142 150 4.2 2-Wire

FB-DO-25946-000 3m WP-23501-000 Noise Canceling 54 30 4.2 2-Wire

FB-HO-25624-000 3m WP-23501-000 Noise Canceling 142 160 5.0 2-Wire

FB-FO-25581-000 N/A EK-23024-000 Omni-Directional 104 140 5.9 2-Wire

O SERIES

*Rating done to IP67 test criteria † WP-Series elements are waterproof

Model Rating Microphone Directivity Boom Length Exit Wire Nominal Boom Microphone

Tip-To-Tip (mm) Length (mm) Diameter (mm) Conﬁguration

Element

FB-MU-30774-000 IP51 DFG-30445-000 Uni-Directional 115 18 1.0 2-Wire

(Super-Cardioid)

FB-MU-31024-000 IP51 DFG-30851-000 Noise Canceling 115 18 1.0 2-Wire

FB-MU-31025-000 IP57 VFG-30747-000 Omni-Directional 115 18 1.0 2-Wire

• Designed for Pro-Audio and performance customers who are looking for the lightest directional microphone in an ultra slim housing

• Available in Uni-Directional design

•Metal head design with metal position-able boom

• New 1.0mm diameter design available in multiple colors (ﬂesh tones, black, tan, brown, etc…)

• News Anchors, Referees, professional presenters, performance artists and other high-end communication headsets

• In-ear ultra light design

•Designed for the DFG, VFG & FG elements series

U SERIES

• Designed for customers who are looking for small footprint and lightweight platform with waterprooﬁng to 1m (based on IP67 rating)

• Plastic head design with metal ﬂexible boom

– Available in 4.2mm down to 2.7mm diameter metal ﬂexible boom

• Security, Police, Fire dispatchers and other lightweight communication headsets

– SWAT, SRT, HRT, Bike Patrol, Motorcycle Patrol, Mounted and Marine Patrol, K9 Ofﬁcer

• Designed for the NR and WP elements, but can also accommodate EK and EA series

W SERIES

Model *Rating †Microphone Directivity Boom Length Exit Wire Nominal Boom Microphone

Tip-To-Tip (mm) Length (mm) Diameter (mm) Conﬁguration

Element

FB-DW-30294-000 3m WP-25993-D63 Noise Canceling 140 60 4.2 2-Wire

FB-BW-30335-000 3m WP-25993-D63 Noise Canceling 160 60 2.7 2-Wire

FB-DW-30296-000 3m WP-25993-000 Noise Canceling 140 60 4.2 3-Wire

FB-DW-30293-000 IP54 ‡ NR-25994-D63 Noise Canceling 140 60 4.2 2-Wire

FB-BW-30330-000 IP54 ‡ NR-25994-D63 Noise Canceling 160 60 2.7 2-Wire

FB-DW-30295-000 IP54 ‡ NR-25994-000 Noise Canceling 140 60 4.2 3-Wire

*Rating done to IP67 test criteria † WP-Series elements are waterproof ‡ Splashproof meeting IP54 test criteria

SPECIALTY TRANSDUCERS – Booms & Sensors

www.knowles.com

Note: All performance curves are typical

•Designed for ruggedized panel mounted applications for outdoor microphone and sensor applications

– Available in Omni Directional

– Waterproof options from 1m down to 20m (per IP67, IP68 and MIL-STD-810F)

• Police and Military forces, Special Operations, personalized shot detection systems

– Sensor arrays for vibration acoustic signatures and triangulation systems

• Designed for the EK, NR and WP elements series

F SERIES

• Designed for ruggedized ﬁxed position and mounted applications for outdoor sensor arrays for vibration, acoustic signatures and

triangulation systems

– Available in Omni Directional

– Waterproof options from 1m down to 20m (per IP67, IP68 and MIL-STD-810F)

• Conductive plastic housing designed to pass MIL-STD-810F EMI shielding housing with shielded cable assembly

– Available with extra high SPL circuit design

– Custom PCBA options available within the housing cavity

• Military, homeland security, border patrol, Police and local municipality applications

– Electronic fence, ground sensor / vibration sensor technology, human, light and heavy armored vehicle, helicopter sensors

• Designed for EK, NR, GH and WP series elements

Model *Rating †Microphone Directivity Sensor Sensor Exit Wire Microphone

Length (mm) Diameter (mm) Length (mm) Conﬁguration

Element

VWP-H-30109-000 3m WP-30113-P03 Omni-Directional 21 12.7 211 3-Wire

VEK-H-30320-000 1m EK-23169-P03 Omni-Directional 21 12.7 211 3-Wire

VEK-H-30108-000 1m EK-26899-P03 Omni-Directional 21 12.7 211 3-Wire

Model *Rating Microphone Directivity Exit Wire Sensor Microphone

Length (mm) Diameter (mm) Conﬁguration

Element

VEK-F-30350-000 1m EK-23132-C36 Omni-Directional 200 16 3-Wire

VEK-F-30351-000 10m EK-23132-C36 Omni-Directional 200 16 3-Wire

VEK-F-30352-000 20m EK-23132-C36 Omni-Directional 20 16 3-Wire

VEK-F-30460-000 1m EK-23132-C36 Omni-Directional 10 16 3-Wire

VEK-F-30300-000 20m EK-23132-C36 Omni-Directional 8 16 3-Wire

VEK-F-30470-000 1m EK-26899-P58 Omni-Directional 174 (Shielded) 16 3-Wire

H SERIES

*Rating done to IP67 test criteria

*Rating done to IP67 test criteria † WP-Series elements are waterproof

16 www.knowles.com

Note: All performance curves are typical

•Ceramic vibration transducer

•High vibration sensitivity

•Small size

•Wide frequency range

•Integral FET ampliﬁer

•High resistance to mechanical shock

•Withstands severe environmental conditions

SENSITIVITY IN dB RELATIVE TO 1.0V/G ACCELERATION

FREQUENCY (Hz)

Model Thickness Sensitivity @ DC Supply (V) Max. Current Nominal “A” Weighted

1KHz (dB re 1V/g) Drain (uA) Output Impedance Noise (dBre. 1V)

@1 KHz (Ohms)

BU-21771-000 4.06 -45.0±4.5 1.5 50 5200 -103

BU-23173-000 4.06 -39.0±4.5 1.5 50 5200 -103

BU-23842-000 2.24 -40.0±4.0 1.5 50 5200 -103

BU-27135-000 2.24 -45.0±4.5 1.5 300 5200 -103

-25

-35

-45

-55

-65

2 3 4 5 6 7 8 9 10k100 1k

2 3 4 5 6 7 8 9 2 3 4 5 6 7 8 9

Model Color Nominal Acoustic PLUG (mm) SCREEN (mm)

Resistance (Ohms)

BF-1859-000 White 680 2.08 --

BF-1860-000 Brown 1000 2.08 --

BF-1861-000 Green 1500 2.08 --

BF-1921-000 Red 2200 2.08 --

BF-1922-000 Orange 3300 2.08 --

BF-1923-000 Yellow 4700 2.08 --

BF-1988-000 White 680 -- 1.12

BF-1991-000 Green 1500 -- 1.12

BF-1995-000 Red 2200 -- 1.12

BF-1997-000 White 680 -- 1.78

BF-1999-000 Grey 330 2.08 --

BF-3034-000 Grey 330 -- 1.78

BF-3035-000 Brown 1000 -- 1.78

BF-3036-000 Orange 3300 -- 1.78

BF-3037-000 Red 2200 -- 1.78

BF-3038-000 Green 1500 -- 1.78

BF-3039-000 Green 1500 -- 1.37

BF-3163-000 Yellow 4700 -- 1.12

•Smoothen and shape frequency response

•Various acoustical resistances and sizes

SPECIALTY TRANSDUCERS – Accelerometers & Acoustic Dampers

BU SERIES –

Accelerometer 7.87 x 5.54 (mm)

BU Series Accelerometers are frequently used as contact microphones for radio

communications in high noise environments such as ﬁreﬁghting or combat.

The accelerometers reproduce voice signals from vibrations at the throat or from

bony parts of the head, and are compatible with helmet or headset applications.

BF Series –

Acoustic Damper Screens

Dampers are acoustic cloth screens for insertion inside acoustic tubing.

These damping elements are used between the speaker outlet and the ear canal

to smoothen the frequency response.

www.knowles.com

Note: All performance curves are typical

SPECIALTY TRANSDUCERS – Speakers

TWFK SERIES –

Dual Balanced Armature Speaker 5.00 x 2.73 x 3.86 (mm)

The world’s smallest dual balanced armature speaker, the TWFK is designed for

pro-audio in-ear applications. Enables customized cross-over systems to achieve

target frequency response in a package size smaller than the ED Series.

Knowles sub-miniature speaker designs are based on balanced armature technology (BAX)

and are utilized in a variety of high performance audio and communication products. Knowles

balanced armature speakers are available in several sizes and efﬁciencies, which can be ﬁnely

tuned to meet your speciﬁc performance requirements. They are designed for use in in-ear

applications, including earphones and communication earpieces, or be sub-assembled by

Knowles for premium consumer electronics accessories.

•High efﬁciency, stability and reliability

•Customizable performance and port locations

•Ideal for premium in-ear designs

•Component and subassembly solutions

Specialty Transducer Speakers

•Single sound port for simpliﬁed earphone design

•Extreme wideband frequency response

•Unique woofer/tweeter combination

•Enables leading-edge earphone designs for miniature size

and performance

Sensitivity @ Sensitivity @ Max SPL @ DC Resistance Impedance @ 500 Hz

Model Port Location 1 kHz (dB SPL) 1st Peak (dB SPL) 1st Peak (dB SPL) (Ohms) (Ohms)

TWFK-30017-000 12S 95 103 113 25 31

2 3 4 5 6 7 8 9

SENSITIVITY IN dB RELATIVE TO 20µPa

FREQUENCY (Hz)

110

105

100

10k100 1k

2 3 4 5 6 7 8 9

•Two-terminal zero-bias conﬁguration

•Undamped, screen damped, and internally damped responses

•Wide range of coil impedances

•DFK model is a dual FK

Sensitivity @ Sensitivity @ Max SPL @ DC Resistance Impedance @ 500 Hz

Model Port Location 1 kHz (dB SPL) 1st Peak (dB SPL) 1st Peak (dB SPL) (Ohms) (Ohms)

FK-23451-000 12S 95.5 108.5 118.5 360 450

FK-23466-000 12S 95.5 108.5 118.5 360 450

FK-26260-000 12S 96 105 115.5 135 180

DFK-30041-000 12S 99.7 105.5 115.5 100 133

2 3 4 5 6 7 8 9

SENSITIVITY IN dB RELATIVE TO 20µPa

FREQUENCY (Hz)

120

115

110

105

100

10k100 1k

2 3 4 5 6 7 8 9

FK/DFK SERIES –

Balanced Armature Speaker

5.00 x 2.73 x 1.93 (mm) (FK), 5.00 X 2.73 X 3.86 (mm) (DFK)

The world’s smallest balanced-armature speaker, the FK Series is designed

for applications where size is the most important design concern.

FH SERIES –

Balanced Armature Speaker 5.09 x 2.80 x 2.59 (mm)

The FH speaker represents an unprecedented combination of ultra-compact size and high SPL

output with efﬁciencies normally found only in much larger speakers. The FH speaker

line brings true high-gain, high-output performance to earphone designs.

18 www.knowles.com

Note: All performance curves are typical

•Undamped, screen damped, internally damped, and Ferroﬂuid

™

damped responses

•Various port locations, coil impedances, damping options,

termination conﬁgurations, and frequency responses available

•Maximum SPL output of 123dB at resonance peak, 109dB

at midband (500Hz)*

Sensitivity @ Sensitivity @ Max SPL @ DC Resistance Impedance @ 500 Hz

Model Port Location 1 kHz (dB SPL) 1st Peak (dB SPL) 1st Peak (dB SPL) (Ohms) (Ohms)

FH-23371-000 12S 100 113 123 60 90

FH-23375-000 12S 100 113 123 240 335

FH-23377-000 12S 100 113 123 515 685

FH-23821-000 12S 100 113 123 125 174

FH-26553-000 12S 100 113 123 60 90

2 3 4 5 6 7 8 9 2 3 4 5 6 7 8 9

SENSITIVITY IN dB RELATIVE TO 20µPa

FREQUENCY (Hz)

120

115

110

105

100

10000100 100

SPECIALTY TRANSDUCERS – Speakers

•Lower low/mid-band sensitivity compared to FK Series

•Best high frequency response of any Knowles element

•Combine with low/mid-range speaker for

extended frequency response

•TWFK pairs WBFK with low frequency FK

Sensitivity @ Sensitivity @ Max SPL @ DC Resistance Impedance @ 500 Hz

Model Port Location 1 kHz (dB SPL) 1st Peak (dB SPL) 1st Peak (dB SPL) (Ohms) (Ohms)

WBFK-30000-000 12S 95 105 114 100 111

WBFK-30095-000 12S 91 105 114 12.5 13.5

2 3 4 5 6 7 8 92 3 4 5 6 7 8 9

SENSITIVITY IN dB RELATIVE TO 20µPa

FREQUENCY (Hz)

110

105

100

10k100 1k

WBFK SERIES –

Wideband Balanced Armature Speaker 5.00 x 2.73 x 1.93 (mm)

Same package size as FK Series, WBFK has extended high frequency response.

It is recommended as a high frequency component to be combined with low/

midrange speaker for music earphones.

Note: All performance curves are typical

www.knowles.com

SPECIALTY TRANSDUCERS – Speakers

WBHC SERIES –

Balanced Armature Speaker 5.16 x 3.51 x 3.00 (mm)

The advanced design of the HC Series speaker provides extended acoustic bandwidth for

hi-ﬁ in-ear speakers when paired with a low frequency speaker.

2 3 4 5 6 7 8 9 2 3 4 5 6 7 8 9

SENSITIVITY IN dB RELATIVE TO 20µPa

FREQUENCY (Hz)

120

115

110

105

100

10000100 100

•Lower low/mid band sensitivity compared to HC series

•Combine with low/mid-range speaker for extended

frequency response

FREQUENCY (Hz)

120

115

110

105

100

80 2 3 4 5 6 7 8 9

10k

100 1k

2 3 4 5 6 7 8 9

Sensitivity @ Sensitivity @ Max SPL @ DC Resistance Impedance @ 500 Hz

Model Port Location 1 kHz (dB SPL) 1st Peak (dB SPL) 1st Peak (dB SPL) (Ohms) (Ohms)

HC-23761-000 12C 101 107 116 4.9 8.4

HC-23763-000 12C 101 107 116 11.5 20

HC-23764-000 12C 101 107 116 15.5 24

•High-output technology provides double (+3dB) the maximum

acoustic output of existing Knowles FC Series speakers

•Maximum output comparable to Knowles’ ED Series speaker

in a package size only 68% as large!

•Same size and dimensions as Knowles’ EH Series

•Ideal for applications where small size and high output is required

SENSITIVITY IN dB RELATIVE TO 20µPa

HC SERIES –

Balanced Armature Speaker 5.16 x 3.51 x 3.00 (mm)

Knowles balanced-armature, magnetic technology to give high efﬁciency, stability

and reliability. HC Series provides increased low frequency dynamic range in a

package size equal to FC.

•Available in High-Output HC speaker version

•Two-terminal zero-bias and three-terminal center-tapped conﬁgurations

•Undamped, screen damped, internally damped, and

Ferroﬂuid™ damped responses

•Rounded corners for improved ﬁt rates; 10% smaller cross-section

compared to EH speaker

Sensitivity @ Sensitivity @ Max SPL @ DC Resistance Impedance @ 500 Hz

Model Port Location 1 kHz (dB SPL) 1st Peak (dB SPL) 1st Peak (dB SPL) (Ohms) (Ohms)

FC-26171-000 12C 104 117 127 135 170

FC-26465-000 12C 104 117 127 42 57

FC-26654-000 12C 104 113 123 40 60

FC-26887-000 12C 100 105 116 354 425

2 3 4 5 6 7 8 9

SENSITIVITY IN dB RELATIVE TO 20µPa

FREQUENCY (Hz)

120

115

110

105

100

10k100 1k

2 3 4 5 6 7 8 9

FC SERIES –

Balanced Armature Speaker 5.18 x 3.55 x 3.00 (mm)

FC Series speakers may be used for small radio communication earphones where ED

size does meet package requirements. Rounded corners make it slightly smaller

compared to EH Series speakers.

Sensitivity @ Sensitivity @ Max SPL @ DC Resistance Impedance @ 500 Hz

Model Port Location 1 kHz (dB SPL) 1st Peak (dB SPL) 1st Peak (dB SPL) (Ohms) (Ohms)

WBHC-23910-000 12C 95 106 115 120 130

EH SERIES –

Balanced Armature Speaker 5.19 x 3.55 x 3.00 (mm)

EH Series speakers are approximately 2/3 the size of ED speakers and may be used for small

radio communication earphones where ED size does not meet package requirements.

ES SERIES –

Balanced Armature Ampliﬁed Speaker 5.18 x 3.54 x 3.04 (mm)

EH size speaker with integrated Class D power ampliﬁer.

GQ SERIES –

Two-Way Balanced Armature Speaker 6.30 x 4.29 x 4.92 (mm)

The GQ is a two-way balanced armature system with added low frequency

headroom, designed for pro-audio\in-ear application. Enables customized

cross-over response to achieve target frequency response.

20 www.knowles.com

Note: All performance curves are typical

Sensitivity @ Sensitivity @ Max SPL @

Model Port Location 1 kHz (dB SPL) 1st Peak (dB SPL) 1st Peak (dB SPL)

ES-23127-000 12C 101 107 117.5

ES-23140-000 12C 101 105.5 115.5

•EH micro speaker, but with internal, highly-efﬁcient, class D ampliﬁer

•Lower current drain prolongs battery life

•Lower distortion

•Available in a range of SPL ratings

FREQUENCY (Hz)

120

115

110

105

100

80 2 3 4 5 6 7 8 9

10k

100 1k

2 3 4 5 6 7 8 9

SENSITIVITY IN dB RELATIVE TO 20µPa

SPECIALTY TRANSDUCERS – Speakers

Sensitivity @ Sensitivity @ Max SPL @ DC Resistance Impedance @ 500 Hz

Model Port Location 1 kHz (dB SPL) 1st Peak (dB SPL) 1st Peak (dB SPL) (Ohms) (Ohms)

EH-23030-000 12C 100 117 126.5 395 625

EH-23149-000 12C 100 116 126.5 68 101

EH-27479-000 12C 100 112.5 123 118 144

•Balanced-armature, magnetic technology to give high efﬁciency,

stability and reliability

•High sensitivity

•Various responses, including standard, damped and modiﬁed

•Low distortion

•Self-shielded for low magnetic radiation

FREQUENCY (Hz)

120

115

110

105

100

80 2 3 4 5 6 7 8 9

10k

100 1k

2 3 4 5 6 7 8 9

SENSITIVITY IN dB RELATIVE TO 20µPa

Sensitivity @ Sensitivity @ Max SPL @ Impedance @ 500 Hz

Model Port Location 1 kHz (db SPL) 1st Peak (db SPL) 1st Peak (dB SPL) DCR (Ohms)

GQ-30783-000 12S 109.5 116 126 12.5 21.5

•Dual element with enhanced bass capabilities

and wideband response

•Unique, subminiature woofer/tweeter

combination for in-ear applications

•Single port for simpliﬁed earphone design

SENSITIVITY IN dB RELATIVE TO 1.0V/0.1 Pa

FREQUENCY (Hz)

120

115

110

105

100

1k 10k100

2 3 4 5 6 7 8 9 2 3 4 5 6 7 8 9

Note: All performance curves are typical

www.knowles.com

SPECIALTY TRANSDUCERS – Speakers

•Ferroﬂuid

™

damped with 2dB, 4dB, or 6dB peak amplitude

•Superior shock performance and reduced speaker vibration

•Two-terminal zero-bias and three-terminal center-tapped conﬁgurations

•Numerous port locations and coil impedances

Sensitivity @ Sensitivity @ Max SPL @ DC Resistance Impedance @ 500 Hz

Model Port Location 1 kHz (dB SPL) 1st Peak (dB SPL) 1st Peak (dB SPL) (Ohms) (Ohms)

FED-26792-I04 12C 102.5 107 116.5 48 65

FED-30048-I04 12N 102 107 116 23 26

FREQUENCY (Hz)

120

115

110

105

100

70 2 3 4 5 6 7 8 9

10k

100 1k

2 3 4 5 6 7 8 9

SENSITIVITY IN dB RELATIVE TO 20µPa

•Undamped, screen damped, internally damped, and Ferroﬂuid

™

damped responses

•Numerous port locations and coil impedances

•High efﬁciency and low distortion

SENSITIVITY IN dB SPL

FREQUENCY (Hz)

125

115

105

2 3 4 5 6 7 8 9 2 3 4 5 6 7 8 9

10k

100 1k

Sensitivity @ Sensitivity @ Max SPL @ DC Resistance Impedance @ 500 Hz

Model Port Location 1 kHz (dB SPL) 1st Peak (dB SPL) 1st Peak (dB SPL) (Ohms) (Ohms)

ED-21744-000 12C 104 112.5 123 825 1700

ED-21913-000 12C 104 117.5 127 376 780

ED-23147-000 12C 102.5 110 120.5 25 48

ED-23619-000 12C 104 117.5 127 3.3 7.1

ED-23801-000 12C 104 113 122 155 196

ED-23814-000 12C 104 112.5 128 23 50

ED-26245-000 12C 104 113 122 35 55

ED-26598-000 12C 102.5 106 115.5 196 395

ED-26821-000 12C 102.5 111 120.5 3.3 7.1

ED-27045-000 9C 104 113 127 196 395

ED-27230-000 12C 104 117.5 127 54.5 79

ED-27304-000 12C 104 117 127 201 290

ED-29689-000 12C 104 118 127 3.7 7.1

ED-26805-000 12C 102 110 120 23 26

ED-26876-000 12C 102.5 111 121 25 48

FED SERIES –

Balanced Armature Speaker 6.32 x 4.31 x 2.47 (mm)

The addition of

Ferroﬂuid

™to Knowles ED series speakers improves mechanical shock

survival and provides peak damping to smooth frequency response.

ED SERIES –

Balanced Armature Speaker 6.32 x 4.31 x 2.97 (mm)

One of Knowles’ most versatile and most popular speakers, its compact size and appreciable

output power make the ED speaker suitable for a variety of instruments.

22 www.knowles.com

Note: All performance curves are typical

Sensitivity @ Sensitivity @ Max SPL @ DC Resistance Impedance @ 500 Hz

Model Port Location 1 kHz (dB SPL) 1st Peak (dB SPL) 1st Peak (dB SPL) (Ohms) (Ohms)

EC-23097-000 12S 108 120 130 92 200

EC-23098-000 12S 108 120 130 196 425

EC-26368-000 12S 108 120 129 26.3 54

•Similar SPL output to the BK Series

•Rounded corners on the face opposite the terminal pad

•34% smaller volume than the BK Series

FREQUENCY (Hz)

125

120

115

110

105

100

85 2 3 4 5 6 7 8 9

10k

100 1k 2 3 4 5 6 7 8 9

SENSITIVITY IN dB RELATIVE TO 20µPa

SPECIALTY TRANSDUCERS – Speakers

•Class D ampliﬁed magnetic speaker

•Self-shielded to reduce magnetic radiation

•125dB SPL maximum output

•Three-terminal electrical connection

Sensitivity @ Sensitivity @ Max SPL @

Model Port Location 1 kHz (db SPL) 1st Peak (db SPL) 1st Peak (dB SPL)

EP-24075-000 12C 106 114 124

FREQUENCY (Hz)

120

115

110

105

100

80 2 3 4 5 6 7 8 9

10k

100 1k

2 3 4 5 6 7 8 9

SENSITIVITY IN dB RELATIVE TO 20µPa

EP SERIES –

Balanced Armature Ampliﬁed Speaker 6.32 x 4.29 x 2.99 (mm)

Based on Knowles’ versatile and popular ED speaker, the EP series adds the beneﬁts of

an internal Class-D ampliﬁer. Its compact size and appreciable output power make the EP

speaker suitable for a variety of designs.

•Round package facilitates earphone designs

•Drop-in upgrade for moving coil dynamic speakers

•Designed for high volume production

•Balanced armature technology

Sensitivity @ Sensitivity @ Max SPL @ DC Resistance Impedance @ 500 Hz

Model Port Location 1 kHz (dB SPL) 1st Peak (dB SPL) 1st Peak (dB SPL) (Ohms) (Ohms)

SR-6438NWS-000 Face 109.5 120 130 25 36.5

SR-6438NWS-158 Face 109.5 120 130 25 32.8

FREQUENCY (Hz)

130

125

120

115

110

105

100

80 2 3 4 5 6 7 8 9

10k

100 1k

2 3 4 5 6 7 8 9

SENSITIVITY IN dB RELATIVE TO 20µPa

SR SERIES –

Balanced Armature Speaker 6.40 DIA x 4.00 (mm)

At 6.4mm diameter, the Mini SR is the smallest round balanced armature speaker in

the marketplace. SR offers output equivalent to the FC series and maximizes

bass performance.

EC SERIES –

Balanced Armature Speaker 7.57 x 4.31 x 3.67 (mm)

EC Series speakers are commonly used in isolating earphones for radio communication.

Note: All performance curves are typical

www.knowles.com

SPECIALTY TRANSDUCERS – Speakers

Sensitivity @ Sensitivity @ Max SPL @ DC Resistance Impedance @ 500 Hz

Model Port Location 1 kHz (dB SPL) 1st Peak (dB SPL) 1st Peak (dB SPL) (Ohms) (Ohms)

TEC-30033-000 12C 115 119 129 22 31

TEC-30087-000 12C 115 119 129 46 62

•Ultra-thin

•Wideband output

•DTEC combines two TEC elements

•Enables small multi-element designs

Sensitivity @ Sensitivity @ Max SPL @ DC Resistance Impedance @ 500 Hz

Model Port Location 1 kHz (dB SPL) 1st Peak (dB SPL) 1st Peak (dB SPL) (Ohms) (Ohms)

DTEC-30008-000 12S 123 122.5 132.5 23 31.5

•Dual elements with single sound port

•More output than BK in equal package size

•Reduced vibration compared to BK

•Improved frequency response compared to BK

2 3 4 5 6 7 8 9

SENSITIVITY IN dB RELATIVE TO 20µPa

FREQUENCY (Hz)

130

125

120

115

110

105

100

10k100 1k

2 3 4 5 6 7 8 9

SENSITIVITY IN dB RELATIVE TO 20µPa

FREQUENCY (Hz)

130

125

120

115

110

105

100

10k100 1k

2 3 4 5 6 7 8 9

DTEC SERIES –

Balanced Armature Speaker 7.87 x 4.09 x 5.59 (mm)

The DTEC Series combines two TEC speaker elements with a single round port.

Case size is equivalent to BK/EF. DTEC provides increased output and reduced

vibration compared to a single speaker.

TEC SERIES –

Balanced Armature Speaker 7.87 x 4.09 x 2.79 (mm)

The TEC combines output comparable to the larger BK speaker in an ultra-thin package.

The TEC is suitable for multi-element earphone designs.

24 www.knowles.com

Note: All performance curves are typical

SPECIALTY TRANSDUCERS – Speakers

•High efﬁciency and low distortion

•Various port locations, coil impedances, damping options,

terminal conﬁgurations, and frequency responses available

SENSITIVITY IN dB SPL

FREQUENCY (Hz)

135

125

115

105

2 3 4 5 6 7 8 9 2 3 4 5 6 7 8 9

10k

100 1k

Sensitivity @ Sensitivity @ Max SPL @ DC Resistance Impedance @ 500 Hz

Model Port Location 1 kHz (dB SPL) 1st Peak (dB SPL) 1st Peak (dB SPL) (Ohms) (Ohms)

BK-21600-000 12S 123 125 133 100 285

BK-21604-000 12S 123 125 133 895 2320

BK-21610-000 12S 121 126 136 21 60

BK-21613-000 1S 118 125 134 160 450

BK-21615-000 12S 118 125 134 160 450

BK-21669-000 12C 123.5 125 134 9 22

BK-23134-000 12S 118 125 134 100 285

BK-26824-000 12S 119 120 129 10.7 16

BK-28507-000 12S 126 126 136 10.7 13.3

BK-28510-000 12S 123 127 135 111 320

BK-28562-000 12S 123 124 131 18.5 23

BK-29725-000 12S 118 119 128 100 285

BK SERIES –

Balanced Armature Speaker 7.87 x 5.59 x 4.01 (mm)

BK Series speakers provide broadband performance at value pricing. They are commonly

used for full range in-ear speakers and communications utilizing an earplug design.

GP SERIES –

Two-Way Balanced Armature Speaker 7.90 x 4.29 x 5.76 (mm)

The GP is a two-way balanced armature system with high output capabilities

for professional in-ear applications. Enables customized cross-over response

to achieve target frequency response.

Sensitivity @ Sensitivity @ Max SPL @ DC Resistance Impedance @ 500 Hz

Model Port Location 1 kHz (dB SPL) 1st Peak (dB SPL) 1st Peak (dB SPL) (Ohms) (Ohms)

GP-30711-000 12S (Dual) 108.5 118 128 58 67

•High performance, low-proﬁle

two-way system

•Customizable cross-over capabilities

•Dual ported to mechanically tune

each driver

SENSITIVITY IN dB RELATIVE TO 1.0V/0.1 Pa

FREQUENCY (Hz)

125

120

115

105

100

2k 20k200

2 3 4 5 6 7 8 9 2 3 4 5 6 7 8 9 2 3 4 5 6 7 8 9

Note: All performance curves are typical

www.knowles.com

SPECIALTY TRANSDUCERS – Speakers

•Two-terminal zero-bias and three-terminal

center-tapped conﬁgurations

•Various port locations, coil impedances,

termination conﬁgurations, and frequency

responses available

SENSITIVITY IN dB SPL

FREQUENCY (Hz)

135

125

115

105

2 3 4 5 6 7 8 9 2 3 4 5 6 7 8 9

10k

100 1k

Sensitivity @ Sensitivity @ Max SPL @ DC Resistance Impedance @ 500 Hz

Model Port Location 1 kHz (dB SPL) 1st Peak (dB SPL) 1st Peak (dB SPL) (Ohms) (Ohms)

CI-22748-000 12C 125 128 138.5 75 250

CI-22762-000 1S 125 128 138.5 51 175

CI-22955-000 12C 125 128 138.5 20 68 @ 1kHz

CI-22960-000 12C 125 128 138.5 100 400

CI-28487-000 1S 125 128 138.5 24 100 @ 1kHz

CI-28597-000 11S 125 128 138.5 20 68 @ 1kHz

•Balanced-armature, magnetic technology to give high efﬁciency,

stability and reliability

•High acoustic efﬁciency enables sufﬁcient sound output even

when limited power is available

•In-built static protection

•Lightweight, matt-black, plastic housing

•Ergonomically designed with rounded edge to ﬁt the concha

•High-quality sound output

•Tailored bandwidth for superb speech intelligibility

SENSITIVITY IN dB SPL

FREQUENCY (Hz)

125

115

105

2 3 4 5 6 7 8 9 2 3 4 5 6 7 8 9

10k

100 1k

Sensitivity @ Sensitivity @ Max SPL @ DC Resistance Impedance @ 500 Hz

Model Port Location 1 kHz (dB SPL) 1st Peak (dB SPL) 1st Peak (dB SPL) (Ohms) (Ohms)

CM-23152-000 Face 103 109 119 69 150

CM-23299-000 Face 103 109 119 69 150

CM-28421-000 Face 103 109 119 100 360

CM-28431-000 Face 103 109 119 10.5 30

CM-28452-000 Face 103 109 119 100 360

CM SERIES –

Balanced Armature Speaker 8.38 x 16.64 DIA (mm)

The CM Series delivers the beneﬁts of balanced armature technology in a compact ﬁnished

package. The CM is ideal for use in situations where a non-contacting headset is required,

but signal voltage is limited – as is common for radios and wireless telephones. The CM

also conserves battery power, and provides static shock protection for the user.

CI SERIES –

Balanced Armature Speaker 9.47 x 7.18 x 4.10 (mm)

Knowles’ largest and most powerful speaker, the CI series is the speaker of choice.

With its high efﬁciency and a 143dB SPL maximum output, the CI speaker provides

optimal low frequency performance.

26 www.knowles.com

SPECIALTY TRANSDUCERS – Speakers

MR SERIES –

Waterproof Speaker 22.12 DIA x 9.3 (mm)

The MR Series Assemblies consist of a speaker element attached to a waterproof

bellows assembly. They may be panel mounted, and are suitable for outdoor use

or repeated submersion.

CB SERIES –

Balanced Armature Speaker 25.15 x 25.15 x 9.65 (mm)

The CB Series Transceiver offers high electro-acoustic efﬁciency to conserve power in

push-to-talk radio handsets and other battery operated equipment. The CB is available

with mounting pins to facilitate assembly to a PC board. Model CB-23817-000 is designed

to survive submersion in water.

•Excellent sound quality

•High speech intelligibility, stability, and reliability

•Suitable for PCB mounting

•Can function as a microphone or beeper

•Various impedances

•Face and edge port locations available

SENSITIVITY IN dB SPL

FREQUENCY (Hz)

2 3 4 5 6 7 8 9 2 3 4 5 6 7 8 9

10k

100 1k

•Highly waterproof – no loss of performance after

immersion in 15m water

•Corrosion resistant

•Withstands explosive decompression

•Design proven in rugged environments

•Leads attached

•High resistance to mechanical shock

•Acoustically transparent bellows

•Resists effects of mud, sand, and salt encrustation

SENSITIVITY IN dB SPL

FREQUENCY (Hz)

125

115

105

2 3 4 5 6 7 8 9

10k

100 1k

2 3 4 5 6 7 8 9

Sensitivity @ Sensitivity @ Max SPL @ DC Resistance Impedance @ 500 Hz

Model Port Location 1 kHz (dB SPL) 1st Peak (dB SPL) 1st Peak (dB SPL) (Ohms) (Ohms)

MR-23333-000 Face 100 119.5 129 10 21

Sensitivity @ Sensitivity @ Max SPL @ DC Resistance Impedance @ 500 Hz

Model Port Location 1 kHz (dB SPL) 1st Peak (dB SPL) 1st Peak (dB SPL) (Ohms) (Ohms)

CB-22849-000 Edge 73 86 96.5 11.5 24

CB-22850-000 Edge 73 86 96.5 21.5 48

CB-23817-000 Edge 83 97 107 21.5 48

27www.knowles.com

CUSTOM ASSEMBLIES

Manufacturing Services

• Assembly

• Cabling

• Testing

• Utilization of Knowles Acoustic components

Design Support

• Industrial

• Mechanical

• Application Tuning

COMPLETE SOLUTION

Knowles Acoustics Finished Goods program offers reduced time to market at an ultimately reduced total manufacturing cost of acoustic product

ownership. Support in design, application, assembly and testing are all elements included in our services. Off-the-shelf designs are also available.

MARKET APPLICATIONS

Ultimately, our mission is to improve the acoustic interface and simplify the manufacturing process for customers. Our long term acoustic history

provides the expertise for markets and customers of:

FINISHED GOODS

Wherever your design ideas take you, Knowles Acoustics

can support your need for customized audio assemblies.

Our custom Finished Goods offer a turnkey solution

utilizing the acoustic expertise and components of

Knowles Acoustics.

• Mobile media products

• Industrial communications

• Consumer electronics applications

Assembly Designs MP3 Mobile Phone Smart Phone/PDA Notebook Industrial Comm.

Single Ear

✔✔ ✔

Stereo

✔✔ ✔ ✔ ✔

Microphone

✔✔✔✔

Collaborate in-depth with Knowles Acoustics to arrive at an integrated component and assembly design to manufacture for you.

MARKET MATRIX

ACOUSTIC SOFTWARE

INTELLISONIC™

The intelligibility and use of mobile communications

are often impeded by the impact of noise from the

immediate environment. IntelliSonic is a software-based

speech enhancement technology that when coupled

with Knowles’ microphones, reduces the effects of

reverberation, directionally interfering speech,

background noise and annoying acoustic echo.

COMPLETE SOLUTION

– Integrated Systems

When you consider the interdependency of microphone design, acoustic porting, and sound signal conditioning, it's easy to see why Knowles

Acoustics has taken an integrated approach to your acoustic system needs.

• VoIP Telephony

• Command and Control

• Voice recognition

• Dictation

APPLICATIONS

Platforms such as tablets, laptops, ultra-mobile personal computers (UPCs), and other mobile computing devices have a number of applications

that would beneﬁt from IntelliSonic to enhance the user experience and ﬁnal product perception.

PRODUCT MATRIX

Product Code # of Microphones Noise Reduction Array Processing Echo Cancellation

DXEC01 1 ✓–✓

DXEC02 2 ✓✓ ✓

• Language Translation

• Voice Annotation

• Audio Note Taking

• Noise suppression 12dB-16dB

• Interference cancellation via beam-forming array 25dB

• Acoustic echo cancellation 25dB

• Speech bandwidth 8kHz

• Adjustable acceptance and look angles

• Fully adaptive system adapts to changing

acoustic environment

• Rich application programming interface (API) set

• Real-time processing

• Low speech distortion

LICENSING

Evaluation licenses are available upon signing an NDA and Software Evaluation Agreement. Volume Licensing is available for OEM products.

Please contact Knowles Sales Representatives for terms.

SUPPORTED PLATFORMS (OS Support)

IntelliSonic

™

Attenuates Unwanted Sounds

(Visual output of recordings using same microphone)

Unprocessed

Signal

Using

IntelliSonic

™

FEATURES

28 www.knowles.com

OS Model Codec

Microsoft Windows XP/2000 WDM Upper Filter AC’97 and HDAudio

Microsoft Windows 7/Vista WaveRT APO AC’97, HDAudio and USBAudio

Microsoft Windows Mobile and its Derivatives Static library or integrated into codec driver binary (requires customization)

Note: All performance curves are typical 29

www.knowles.com

MICROPHONES

Microphones measure sound pressure. Inside a Knowles microphone is a thin ﬂexible diaphragm, an electrically

charged plate, and an ampliﬁer (Fig. 1). The output voltage is proportional to changes in the small separation

between the diaphragm and the charged plate (Fig. 2).

As sound pressure inside the front cavity increases, the diaphragm is pushed closer to the plate. As the

pressure decreases, it moves further away. The motion of the diaphragm produces a small electrical signal that

is ampliﬁed by a miniature circuit inside the microphone.

The sensitivity of a typical Knowles’ microphone is measured in units of dB relative to 1 Volt per 0.1 Pascal.

MICROPHONE AND SPEAKER BASICS

Fig 1: Cross section of a Knowles EM microphone

OUTPUT TERMINAL

CHARGE PLATE DIAPHRAGM FRONT CAVITY

WIRE

SOUND PRESSURE

FIG. 2: EM diaphragm and electret

CHARGE PLATE

DIAPHRAGM AIR GAP SEPARATION

AMPLIFIER

30 www.knowles.com

MICROPHONE AND SPEAKER BASICS

SPEAKERS

The speaker converts an electrical signal into sound. A cross section of a typical Knowles speaker is shown in Fig. 3.

The basic components of the speaker are: a coil of wire, a metal U-shaped reed called the armature, a pair of permanent

magnets, a drive rod, and a diaphragm.

The coil and armature act as an electromagnet. An alternating current in the coil causes the polarity of the armature to

switch back and forth from north to south. The free end of the armature bends slightly up and down as it is attracted

alternately to the top and bottom magnets (Fig. 4). The diaphragm, pulled along by the drive rod, pumps air in and out of

the speaker. The mechanical motion of the armature is thus converted into sound.

The sound output of a typical Knowles’ speaker is measured in units of dB SPL (sound pressure level) relative to 20 µPa.

Fig. 3: Cross section of a Knowles EH speaker

INPUT TERMINAL COIL DRIVE ROD DIAPHRAGM

MAGNETS

ARMATURE

Fig. 4: The motor of the speaker has a coil, an armature, and a pair of permanent magnets.

World Headquarters

Knowles North &

South America

Knowles Europe,

Middle East &

Africa

Knowles Australia

Knowles Singapore

Knowles Malaysia

Knowles Taiwan

Knowles China

Knowles Japan

Knowles Korea

Manufacturing

Sales & Application Engineering

AMERICAS EMEA / ASIA PACIFIC

Globally Positioned

AMERICAS:

Knowles Acoustics

1151 Maplewood Drive

Itasca, IL 60143 U.S.A.

Phone: 630-250-5930

Fax: 630-250-5932

EUROPE:

Knowles Acoustics

Havnevej 7

DK-4000 Roskilde

Denmark

Phone: +45 70 25 35 70

Fax: +45 70 25 35 71

JAPAN:

Knowles Acoustics

2-2-16 Sangenjaya

Setagaya-Ku, Tokyo

154-0024 Japan

Phone: 81-3-5779-8503

Fax: 81-3-5779-8523

KOREA:

Knowles Acoustics

#1107, Parkview Tower,

Jeongja-dong 6,

Bundang-gu, Seongnam-si,

Kyeonggi-do, Korea

Phone: 82-31-712-2223

Fax: 82-31-712-3314

ASIA:

Knowles Acoustics

5F, No. 129, Lane 235, Bauchiau Rd.

Shindian City, Taipei 23145, Taiwan

Phone: 886-2-8919-1799

Fax: 886-2-8919-1798

Knowles Acoustics maintains sales, marketing, engineering and manufacturing globally.

For immediate assistance on your speciﬁc requirements, please call the nearest facility listed below.

www.knowles.com

KA-003-03-10V4