GA-2 - BOGEN COMMUNICATIONS

GA2

Bogen Model GA2 is a rugged, compact 1.5-watt

amplifier designed to meet the requirements of

continuous low-power audio applications. It is ide-

ally suited for telephone line "music-on-hold"

amplification. It can also be used to drive monitor

speakers, headphones, or as a line amplifier. With

accessory transformer Model WMT1A connected

to the input, the GA2 will provide amplification for

a 600-ohm telephone line.

Model GA2 has a high-impedance input that is

available at both a phono jack and screw termi-

nals. Only 50 mV is required for full output. A

choice of 8-ohm or 600-ohm output is provided.

Low distortion, wide frequency response, and low

hum and noise further contribute to excellent per-

formance. A screwdriver-adjustable volume control

is provided on the chassis.

The amplifier is compact and easily mounted on a

wall or in any convenient location.

GA6A

Bogen Model GA6A is a rugged and compact 6-watt,

dual-input amplifier with a wide variety of applica-

tions such as background music in a doctor's wait-

ing room, relaying fast-food restaurant orders from

counter to kitchen, or sound reinforcement in a

small church.

The GA6A delivers rated power at not more than

1% total harmonic distortion from 75 Hz to 15 kHz

into matched loads. A low-impedance balanced or

unbalanced microphone input and wide-frequency

auxiliary input are provided, with built-in mixing and

individual front-panel controls. The unit is protected

by an internal thermostat.

Output connections are easily made via screw ter-

minals on the rear panel. Tone control can be

adjusted on the rear panel, and an illuminated

rocker-type front-panel power switch is provided.

The chassis is fabricated from sturdy cold-rolled

galvanized steel.

GA2

• 1.5-watt utility amplifier

• 1 input: AUX (Hi-Z)

• 8-ohm or 600-ohm outputs

• 200 Hz to 15 kHz frequency response

• 50 mV sensitivity

• Volume control

• 120V AC operation

• 4W power consumption

• 5-1/2 ft. AC power cord included

• Wall-mountable design

Listed to UL Standard 60065 for U.S. and Canada

GA6A

• 6-watt utility amplifier

• 2 inputs: 1 MIC (Lo-Z), 1 AUX (Hi-Z)

• 8-ohm, 25V, or 70V outputs

• 30 Hz to 12 kHz frequency response

• Sensitivity: 0.3 mV, MIC; 0.2V, AUX

• Internal Thermostat

• Adjustable tone control

• 16W power consumption

• Listed to UL Standard 60065 for U.S. and Canada

Features

Description

Specifications subject to change without notice.

54-7767-03D 1101

General Purpose

Amplifiers

Models GA2 & GA6A

GA2

GA6A

GA2

Power Output: 1.5 watts RMS

Frequency Response: 200 Hz to 15 kHz

+0 dB, -2.5 dB

Total Harmonic Distortion: 2% @ 1.5W,

0.25% @ 1W

Output Level: +6dBm (1.5V) across balanced

600 ohms

Sensitivity: 50 mV

Input Impedance: 100k ohms

Hum and Noise: -72 dB below rated output

Output Impedance: 8 ohms; 600 ohms balanced

Control: Volume, screwdriver-adjustable

Terminations:

Output — terminal strip

Input — RCA-type phono jack or terminal strip

Power Consumption: 4W, 120V AC, 60 Hz

Dimensions: 5-1/2" W x 4-1/8" H x 2-1/4" D

Product Weight: 2 lb.

GA6A

Power Output: 6 watts RMS

Frequency Response: 30 Hz to 12 kHz +0 dB, -3 dB

Total Harmonic Distortion: 1% @ rated output

Power Bandwidth: 75 Hz to 15 kHz

Inputs: Lo-Z MIC, balanced or unbalanced; AUX

Sensitivity: MIC 0.3 mV; AUX 0.2 V

MIC Dynamic Range: 46 dB

Hum and Noise: MIC -50 dB; AUX -64 dB below

rated output

Output Impedance/Voltage: 8 ohms; 25V & 70V line

Tone Switch: 9 dB treble boost at 10 kHz,

9 dB treble cut at 10 kHz

Protection: Internal Thermostat

Controls: MIC, AUX, illuminated POWER switch

Terminations:

Outputs and Microphone — terminal strip

Auxiliary — RCA-type phono plug

Power Consumption: 16W, 120V AC, 60 Hz

Dimensions: 8-1/2" W x 2-3/4" H x 6" D

Product Weight: 5 lb.

Technical

Specifications

GA2

The amplifier shall be a Bogen Model GA2, or equiv-

alent, capable of delivering 1.5 watts at 2% THD, and

1 watt at 0.25% THD from 200 Hz to 15 kHz, +0 dB,

-2.5 dB, into 8 ohms. It shall provide one high-imped-

ance input with volume control, one 8-ohm output,

and one 600-ohm output. Input impedance shall be

100 kilohms. Output level across balanced 600 ohms

shall be 8 dBm/2V. Input sensitivity at full output shall

be 50 mV or less; hum and noise shall be at least

-72 dB below rated output. Inputs shall be via RCA-

type phono jack or screw terminal strip. Output shall

be via screw terminals.

The unit shall operate from 120VAC, 60 Hz and shall

consume 4 watts. The unit shall measure 5-1/2" W x

4-1/8" H x 2-1/4" D. The product weight shall be 2 lb.

A 5-1/2-foot AC power cord shall be provided.

GA6A

The amplifier shall be a Bogen Model GA6A, or

equivalent, capable of delivering 6 watts at not more

than 1% total harmonic distortion from 75 Hz to 15

kHz. Frequency response shall be 30 Hz to 12 kHz,

+0 dB, -3 dB. The amplifier shall provide one low-

impedance, balanced or unbalanced microphone

input and one high-impedance auxiliary input, with

individual front panel controls and mixing capability.

Microphone dynamic range shall be 46 dB with MIC

sensitivity of 0.3 mV. Auxiliary input sensitivity shall

be 0.2V or better. Hum and noise shall be -50 dB for

microphone, and -64 dB for auxiliary inputs.Tone

adjustment shall allow 9 dB treble boost or attenua-

tion at 10 kHz, located on rear panel.

Outputs shall be provided on the rear panel for 8-ohm

speaker and 25V and 70V lines. Output and micro-

phone connections shall be made at rear-panel

screw terminals; auxiliary input shall be via a rear

panel RCA-type phono jack.

The amplifier shall operate from 120VAC, 60 Hz, and

shall consume 16 watts. A rocker-type, front panel-

mounted switch shall illuminate when the unit is

switched on. Overload protection shall be by means

of an internal thermostat. The chassis shall be con-

structed of zinc-plated galvanized steel with protec-

tive epoxy, and the cover from black vinyl-clad cold-

rolled steel. The front panel shall be finished in black.

The unit shall measure 8-1/2" W x 2-3/4" H x 6" D.

The product weight shall be 5 pounds.

Architect

and Engineer

Specifications

50 Spring Street, Ramsey, New Jersey 07446, U.S.A.

Tel. 201-934-8500 • Fax: 201-934-9832