Crown DC-300A, Instruction Manual

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4
1.2.3 GENERAL SPECIFICATIONS
Hum and Noise
(20Hz-20KHz)
Phase Response
Input Impedance
Amplifier Output
Protection
Overall Protection
Turn-on
Circuit
Power Supply
Power Requirements
Heat Sinking
Chassis
Controls
Connectors
Dimensions
Weight
Finish
110dB below rated output
+0, - 1 5 ° Zero to 20KHz at 1 watt
100K ohms at minimum gain, 10K ohms at maximum gain.
Short, mismatch, and open circuit proof. Limiting is instantaneouswith noflyback pulses, thumps,
cutout, etc. No premature limiting on transients.
AC line fused. Thermal switch in AC line protects against overheating caused by insufficient
ventilation. Controlled slewing rate voltage amplifiers protect overall amplifier against RF burn-
outs. Input overload protection is furnished by internal resistance at inputs of amp.
instantaneous, with minimum thumps and no program delay.
Wideband multiple feedback loop design utilizing one linear IC (dual op-amp). Total equivalent of
60 transistors, 30 signal diodes, 3 zeners and 6 rectifier diodes.
1 kilowatt transformer with massive computer-grade filter capacitors storing over 48 joules of
energy. Two regulated supplies for complete isolation and stability.
Requires 50-4OOHz AC with selectable taps for 100, 120, 200, 220 and 240V ±10% operation.
Draws 40 watts or less on idle, 500 watts at 300 watts total output.
Massive black-anodized heat sinks are thermally joined with the chassis, thereby utilizing the en-
tire amplifier as a heat sink.
All aluminum construction for maximum heat conduction and minimum weight.
Heavy
aluminum
front panel is a single extrusion.
Independent input level controls are on front panel. Power switch, with integral pilot light is on
front panel. Non-interacting DC balance controls are mounted behind front panel. A mono-stereo
switch is located above the input jacks on the rear panel.
Input - ¼ inch phone jack
Output - Color coded binding posts
AC Line - Three-wire (grounded) male connector on 5 ft. min. cable
19 inch standard rack mount (W.E. hole spacing), 7 inches high, 9 ¾ inches deep (from mounting
surface).
45 pounds
Satinized aluminum front panel, with gray suede Lexan insert.