Specifications - Crown DC 300 Instruction Manual

1.3 SPECIFICATIONS
Frequency Response
Phase Response
Power Response
Power at Clip Point
Total Output (IHF)
LM. Distortion
(60-7K Hz 4:1)
Damping Factor
Hum and Noise
(20-20KHz)
Slewing Rate
Load Impedance
Input Sensitivity
Input Impedance
Output Impedance
Turn-On
Load Protection
Overall Protection
Power Supply
Power Requirements
Heat Sinking
Chassis
Controls
Connectors
Dimensions
Weight
Finish
+0.1db Zero -20KHz at | watt into 8 ohms, +0.6db Zero -100 KHz.
See graphs, next pages.
+1db Zero -20KHz at 150 watts RMS into 8 ohms.
Typically 190 watts RMS into 8 ohms, 340 watts RMS into 4 ohms per channel (see graphs).
Typically 420 watts RMS into 8 chms, 800 watts RMS into 4 ohms (see graphs).
Less than 0.1% from 0.01 watt to 150 watts RMS into 8 ohms, typically below 0.05%. (max. 0.05%,
see graphs.)
Greater than 200 (Zero to [KHz into 8 ohms at 150 watts RMS), see graph.
100db below 150 watts RMS output (unweighted, typical 110db).
8 volts per micro-second, S-R is the maximum value of the first derivative of the output signal.
4 ohms or greater. Stable with all speaker loads. Stable with all capacitors less than Imfd, and all
capacitors if isolated by 1 ohm. For V-I limiting values see Section 3,
1.75 volt +2% for 150 watts into 8 ohms (see graphs).
Nominal 100K ohms (10K ohms at full gain, see graphs),
See graphs, next pages,
Instantaneous, with no thumps or program delay.
Short, mismatch, and open-circuit proof. V-I limiting is instantaneous with no annoying thumps,
cutout, ete.
All main supplies and line voltage are independently fused. Thermal switches in AC line protect against
over-heating caused by insufficient ventilation, Four spare fuses for main supplies are stored on the
inside of front-panel fuse access door. Controlled-slewing-rate voltage amplifiers protect overall
amplifier against RF burnouts. Input overload protection is furnished by internal resistance at inputs of
amp.
1KW transformer with heavily-heat-sinked high-current diodes and massive computer-grade filter
capacitors storing over 48 joules of energy. Total of four regulated supplies (2 per channel) for
complete isolation and stability.
Massive black-anodized heat sinks are thermally joined with chassis, thereby utilizing the entire
amplifier as a heat sink.
All-aluminum construction for maximum heat conduction and minimum weight. Heavy 3/16 in.
aluminum front panel is reinforced by a rugged aluminum extrusion along its lower front.
Heavy-duty independent input level controls are on front panel. Power switch, with adjacent pilot light
is on front panel. Non-interacting DC balance controls are mounted behind screwdriver access holes
which are behind front-panel access door. Slide switches mounted on sides allow two modes of V-L
limiting, one being for high-hysteresis loads,
Input - 4 in, phone jack.
Output - Color coded binding posts and % in. phone jack.
AC Line - Three-wire (grounded) male connector on 5 ft. min. cable,
19 in. standard rack mount (W.E. hole spacing), 7 in. height, 9% in. deep (from mounting surface).
40 pounds net weight.
Bright-anodized brushed-aluminum front-panel with black-anodized front extrusion, access door, and
chassis.