Stereo Specifications - Crown PSA-2 Service Manual

Dimensions: 19" standard rack mount (EIA Standard
RS-310-B) 7" height, 1434" behind mounting surface.
Handles extend 2'4" in front of mounting surface. Center
of gravity is 5.4" behind the front panel.
Weight: 57 pounds (25.8Kg) net weight.
Finish: Satinized aluminum front panel with gray suede
Lexan insert and black adonized aluminum chassis and
covers.
Construction: Aluminum chassis, specially designed
"flow-through" ventalation top front and side panels.
Heavy duty handles to ease transport. Plug in rear panel
balanced input module.
Heat Sinking: Forced air with high efficiency coolers. A
two speed fan with an intake filter (washable) mounted
on the back (rear) of the amplifier forces air through
coolers and out both the top and sides of the amplifier.
IV. PSA-2 Stereo Specifications
(Exclusive of Balanced Input Module)
Output Power: 220 watts per channel minimum RMS
(both channels operating) into an 8 ohm load, 20Hz-
20KHz at a rated RMS sum total harmonic distortion of
0.05% of the fundamental output voltage (tested per
FTC specifications), 250 watts +IdB per channel,
20Hz- 20K Hz into 8 ohms with no more than 1.0% THD
(EIA Std. SE-101-A).
Output Power (4 ohms): 400 watts +1dB per channel,
20Hz-20K Hz into 4 ohms with no more than 1.0% THD
(EIA Std. SE 101-A).
Output Power (2 ohms): 685 watts +1dB at IK Hz per
channel into 2 ohms with no more than 1.0% THD.
Hum and Noise: | 15dB below rated output "A" weighted
110dB below rated output (20Hz-20K Hz).
Response: + 0.1dB 20Hz-20K Hz at | watt into 8 ohms +0 -
1,5dB DC-80K Hz.
Harmonic Distortion: Less than 0.002% from 20Hz-
1KHz and increasing linearly to 0.05% at 20K Hz at 220
watts into 8 ohms, per channel.
IM Distortion: Less than 0.01% from 0.25 watts to 220
watts into 8 ohms per channel.
Slewing Rate: Greater than 30 volts per microsecond.
Damping Factor: Greater than 700, DC to 400Hz into 8
ohms.
Output Impedance: Less than 12 milliohms in series with
less than 1,2 microhenries.
Load Impedance: Rated for 16, 8, and 4 ohm usage, safe
with all loads.
Voltage Gain: 20+2% or 26dB +.2dB at maximum gain.
Input Sensitivity: 2.1 volts for 220 watts into 8 ohms.
Output Signal: Unbalanced, dual channel.
V. PSA-2 Monaural Specifications
(Exclusive of Balanced Input Module)
Output Power (8 ohms): 800 watts + 1dB; 20Hz-20K Hz
into 8 ohms with no more than 1.0% THD (EIA std.
SEIOI-A).
Output Power (16 ohms): 500 watts + 1dB; 20Hz-20K Hz
into 16 ohms with no more than 1.0% THD (EIA Std.
SE-101-A).
Output Power (4 ohms): 1370 watts +1dBat IK Hzinto4
ohms with no more than 1.0% THD.
Frequency Response: +0.2dB, DC-20K Hz at | watt into
16 ohms.
Harmonic Distortion: Less than 0.003% from 20Hz to
IKHz and increasing linearly to 0.08% at 20KHz, 500
watts into 16 ohms.
Less than 0.005% from 20Hz to 1KHz and increasingly
linearly to 0.12% at 20K Hz, 800 watts into 8 ohms.
IM Distortion: Less than 0.015% from 0.25 watts to 500
watts into 16 ohms.
Less than 0.015% from 0.25 watts to 700 watts into 8
ohms.
Slewing Rate: Gre
: than 60 volts per microsecond,
Damping Factor: Greater than 700, DC-400Hz into 16
ohms.
Output Impedance: Less than 24 milliohms in series with
less than 2.4 microhenries.
Load Impedance: Rated for 16 and 8 ohm usage, safe
with all loads.
Voltage Gain: 40 +2 or 32dB+.2dB at maximum gain,
Input Sensitivity: 2.2 volts for 500 watts into 16 ohms.
Output Signal: Balanced, single channel. Channel |
controls are active; Channel 2 inactive but not removed
from operation.
VI. PSA-2 Balanced Input Module
Specifications
Controls: Channel | and Channel 2 input gain adjust
with the AGC Threshold, is accessible from the rear on
the Balanced Input Module.
Hum and Noise: -85dBm equivalent input noise 20Hz-
20K Hz, 600 ohm source, gain set at unity.