Crown PSA-2 - SA2 Specifications; SA2 Stereo Specifications

crown
Frequency Response: Flat +0.2dB 20Hz to 20KHz.
High and Low Pass Filters: 3 pole Butterworth
18dB/octave; SOHz and 1S5KHz standard frequencies.
(Other roll-off points available; see Sec. 7.10 for details.)
Slide switch activated.
Compressor Action: Range of compression restricted to
13d B by design (wider range would aggravate feedback in
live performance). Threshold adjustable from overload
level of main amplifier to 12dB lower.
Balanced Input Voltage Gain: Variable 0-10 +30%.
Test Tone: Switch activated wide spectrum 50Hz-20K Hz
tone.
Common Mode Rejection: 70dB 5SHZ-3KHz
55dB 20K Hz (see Graph RVW.13).
VII. SA2 Specifications
General Protection: Protection circuitry limits the
output level to protect the output transistor stage, even in
the case of elevated temperature. Transformer
overheating results in shutdown (STANDBY) of that
particular channel. Controlled slewing rate voltage
amplifiers protect the unit against RF burnouts. Input
overload protection is furnished by a resistor at the input
of the amplifier to limit current.
DC Output Offset: (Shorted input) +10 millivolts.
Hum and Noise: | 15dB below rated output “A” weighted
110dB below rated output (20Hz-20K Hz).
Phase Response: +0, -15 degrees DC-20KHz at | watt.
Input Impedance: 25K ohms +30%.
High Voltage Power Supply: Two 800VA tranformers
with computer grade capacitors powered through 10A
relays.
Low Voltage Power Supply: +15V DC supplies are
provided by a current limited shortproof regulator.
Power Requirements: 50-60Hz AC with adjustable taps
for 100, 120, 200, 220, and 240+ 10% operation. Draws 90
watts or less on idle; 800W at 220W channel into 8 ohms.
Turn On: May be switch selected for instantaneous or
four second delay after applying power. No dangerous
transients.
Low Fregency Load Protect: May be switch selected to
produce shutdown (STANDBY) of high voltage power
supply for DC outputs greater than 26V or low frequency
outputs greater than 26V peak at S5Hz into 8 ohms.
Controls: Two position ON/OFF rotary switch. Right
and Left Input Level controls. The LOW FREQ
PROTECT, DELAY and STEREO/MONO slide
switches are located on the rear panel.
Displays: An amber LED indicates power on. A pair of
yellow LED's indicate STANDBY mode activated for
that respective channel. Two sets of fifteen green LED's
form a display ladder that indicate by peak-hold and
running peak simultaneously, the amplifier’s output level
over a 42dB range. A pair of red LED's, 1OC (Input
Output Comparator), indicate amplifier overload for
that respective channel.
Connectors: Unbalanced Input - pin jacks. OutputColor
coded dual binding posts on standard 4%” centers; spaced
¥,” apart for MONO (Balanced) output connection. AC
Line - Three wire 20A, 120V male connector with 5 ft.
cable. Ground Selectivity - 2 lug terminal block with
removable shorting strap.
Dimensions: 19” standard rack mount (EIA Standard
RS-310B) 7” height, 144” behind mounting surface.
Center of gravity is 5.4” behind front panel. Extends 2/4”
in front of mounting surface with optional handles.
Construction: Aluminum chassis, specially designed
“flow-through” ventilation top and side panels.
Heat Sinking: Forced air with high efficiency coolers. A
two speed fan with an intake filter (washable) mounted
on the rear of the amplifier forces air thru coolers and out
both the top and sides of the amplifier.
Weight: 57 pounds (25.8Kg) new weight.
Finish: Satinized aluminum front panel with gray suede
Lexan insert and black anodized aluminum chassis and
covers.
Vill.
Output Power: 220 watts per channel minimum RMS
(both channels operating) into an 8 ohm load, 20Hz-
20K Hz ata rated RMS sum total harmonic distortion of
0.5% of the fundamental output voltage.
350 watts per channel minimum RMS (both channels
SA2 Stereo Specifications
R-3
|