Altec 1594c manual

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ALTEC

1594C
POWER AMPLIFIER

DESCRIPTION

The 1594C Power Amplifier delivers in excess of
100 watts of power at less than 1% total har-
monic distortion (THD) from 35-20000 Hz. It
has a high-impedance direct input and an octal
socket to accept a line-matching 0r line-bridging
transformers A selectable high-pass filter having
a cutoff frequency of 300 Hz is available to pro-
vide driver protection in speech reinforcement
systems.

The 1594C provides transformer-isolated

outputs for 4-ohm, 8-ohm and 16-ohm loud-
speakers, plus a 70V line output for distribution
systems.

The 1594C operates from a 120V or 240V ac
source or from a 28V dc battery. Designed for
rack mounting, the 1594C is four rack units high
and 8V2 inches deep. A hinged front panel
allows servicing without removing the amplifier
from the rack.

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SPECIFICATIONS

Gain: 64 dB

Input Sensitivity: 0.3V rms for rated output
Power Output: 100 watts at less than 1% THD,

50 to 12,000 Hz

:1 dB, 20 to 20,000 Hz

at 1 watt output.

:1 dB, 50 to 12,000 Hz

at rated output.

15,000 ohms (potentiometer)
150 or 600 ohms balanced
with 15095A Line
Transformer

15,000 ohms balanced with
15335A Line Transformer

4, 8, 16, 50 ohms
20, 28, 40, 70.7 volts

Less than 10% of nominal
load impedance

Frequency Response:

Input Impedance:

load Impedance:
Load Voltage:
Output Impedance:

Noise Level: 85 dB below rated output

Gain Control: Potentiometer, continuously

variable

100/1 20/220/24OV ac, 50/60

Hz 20 watts at zero signal

290 watts at 100 watts output
_ or-

24/28V dc (battery H is

ground)

0.2 amp at zero signal

8.5 amps at 100 watts output

Power Required:

ARCHITECTS AND ENGINEERS SPECIFICATIONS

The power amplifier shall be capable of operating from
a 100/120/220/240V ac line or from a 24/28V dc bat-
tery. The power supply shall automatically transfer the
power to dc operation if ac power fails. An octal socket
shall be provided on the rear panel for installation of an
accessory line transformer. The front panel shall be
hinged to permit access to the chassis interior without
removing the amplifier from the equipment rack.

The power amplifier shall meet the following criteria.
Gain, 64 dB. Input sensitivity, 0.8V rms for rated out»
put. Power output, 100 watts at less than 1% THD from
50 Hz to 12 kHz. Frequency response at 1 watt output,
:1 d8 from 20 Hz to 20 kHz and :1 dB 50 Hz to 12

Operating
Temperature Range:

Special Features:

Dimensions:

Weight:
Color: _

Accessories (must be
ordered separately):

Up to 55°C (131°F) ambient

Dissipation sensing circuit for
protection of output
transistors

Automatic transfer from ac to
dc power if ac power fails
High-pass filter (300 Hz
cutoff)- switch on rear panel

7" (17.8 cm) H

19" (48.3 cm) W
8V2" (21.6 cm) D

35 pounds (15.88 kg)

Black

15095A Line Transformer

15335A Line Transformer

Design and Undewvriters Laboratories
Performance Approvals listing 209] for Commercial
Audio Systems, File E8783(N)
Underwriters Laboratories
. listing 89MO for Fire
Protective Signaling Systems,
File $2925(N)

kHz at rated output. Input impedance; 15,000 direct or
balanced with |ine»bridging transformer accessory, 150
or 600 ohms balanced with line-matching transformer
accessory. Load impedance; 4, 8, 16 and 50 ohms.
Load voltage; 20, 28, 40 and 70.7 volts. Output imped-
ance, less than 10% of nominal load impedance. Noise
level, 85 dB below rated output. Operating tempera-
ture range, up to 55°C (131%). Dimensions, 7 H x 19
W x 8V2" D. Weight, 35 pounds. Color, black.

The power amplifier shall be Underwriters Laboratories

_ listed for use in commercial audio systems and fire pro-

tection signaling systems.
The power amplifier shall be the ALTEC Model 1594C.

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PRINTED IN U.S.A. 989-

Ai_Ti-:c °

P.0. BOX 26105, OKLAHOMA CITY, OK 73126-0105, USA
@1959 ALTEC LANSING CORPORATION

Revision 3

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AL-l 859

42-07-027037