Altec 1590e service manual

Page 1

KEY FEATURES

* DC Voltage Backup Ensures
Uninterrupted Operation
VI: Switchable High-Pass Filter

DESCRIPTION

The Altec Lansing 1590E Power Amplifier is
designed for applications where uninterrupted operation
is a priority. The 1590B provides 200 watts of power at
less than 1% total harmonic distortion (THD) from 50 Hz
to 12 kHz. and has a frequency response of -1 dB from
20 Hz to 20 kHz at one watt output. Output transformer
taps provide connections for 70.7. 100. 140 and 200
volt line distribution systems.

The 1590E features silicon solid-state circuitry, a
swrtchable high-pass filter for use in speech systems.
input connections for high impedance devices and for
150/600 ohm or 15.000 ohm balanced inputs, fail-safe
protection for output transistors, and a hinged front
panel for rapid access to the chassis interior.

The 1590E is capable of operation from a negative
grounded 24/28 V DC source. The 1590E is UL listed
for use in commercial audio systems and fire protective
signaling systems.

Designed for rack-mounted use, the 1590E occupies
six units of vertical space. 10.5 inches (26.7 cm).

1590E

Power Amplifier

SPECIFICATIONS

Gain:
Input Sensitivity:

Power Output:

Frequency Response:

Input Impedance:

Load Impedance:
Load Voltage:

Output Impedance:
Noise Level:
Operating

Temperature Range:

Controls:

Power Required:

Special Features:

67 dB.
0.8 Vrms for rated output.

200 watts at less than 1% THD
from 50 Hz to 12 kHz.

:1 dB, 20 Hz to 20 kHz at 1 watt
output.

:1 dB, 50 Hz to 12 kHz at rated
output.

15 kohms.

15 kohms balanced with 15335A
Line Transformer.

150/600 ohms balanced with
15095A Line Transformer.

25, 50, 100, and 200 ohms.
707,100,140 and 200 volts.

Less than 25% of nominal load
impedance.

Output noise 85 dB below rated
output.

Upto 55°C (131°F).

1 VOLUME control, continuously
variable.

1 power OFF-0N switch.
1 high-pass filter switch.

100/ 120/220/240 AC, 50/60 Hz,
25 W at zero signal,

420 W at 200 W output. -or-
24/2811 DC (battery (-) is ground),

0.2 A at zero signal,
14 A at 200 W output.

Automatic transfer from AC to DC
power in the event of AC power
failure.

Dissipation sensing circuit for
protection of output transistors.
High-pass filters.

Page 2

Specifications (continued)

Design and Underwriters Laboratories listing 209] Weight: 41.0 lbs (18.6 kgs).
Performance Approvals: for Commercial Audio Systems, File
E8783(Nl. . Color: Black.
Underwriters Laboratories listing
89M0 for Fire Protective Signaling Optional Accessories: 15095A Line Transformer.
Systems, File 32925lN). 15335A Bridging and Matching
Dimensions: Transformer.
Height: 10.5 inches (26.7 cm).
Width: 19.0 inches (48.3 cm).
Depth: 8.3 inches (21.0 cm).
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ARCHITECTS AND ENGINEERS SPECIFICATIONS

The power amplifier shall be capable of operating from
a 100. 120. 220. 240 V AC line or from a 24/28 V DC
battery. 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 perfor-
mance criteria: Gain. 67 dB. Input sensitivity. 0.8 Vrms for
rated output. Power output. 200 watts at less than 1% THD
from 50 Hz to 12 kHz. Frequency response. :1 dB from 20
Hz to 20 kHz at 1 watt output. and :1 dB 50 Hz to 12 kHz

at rated output. Input impedance. 15.000 ohms. Load
impedance. 25. 50. 100 and 200 ohms. Load voltage.

70.7. 100. 140 and 200 volts. Output impedance. less
than 2 % of nominal load impedance. Noise level. output
noise 85 dB below rated output. Operating temperature
range. up to 55°C (131°F) ambient. Dimensions. 10.5 inches
(26.7 cm) high by 19.0 inches (48.3 cm) wide by 8.3 inches
(21.0 cm) deep. Weight. 41.0 lbs (18.6 kgs). The unit shail
be black in color.

The power amplifier shall be Underwriters Laboratories
listed for use in commercial audio systems and fire protec-
tion signaling systems.

The power amplifier shall be the ALTEC Model 1590E.