  CROWN XLS-402D Professional Stereo Power Amplifier
Reliable design incorporates many popular features, Housed in a rugged, all-steel 2U chassis (3U in the XLS 5000), Efficient forced-air fans prevent excessive thermal buildup, Electronically balanced XLR inputs; touchproof binding post and Speakon® outputs, Precision detented level controls, power switch, power LED, and six LEDs which indicate signal, clip and fault for each channel.
Power output:
450W @ Stereo, 4 ohms (per ch.)
300W @ Stereo, 8 ohms (per ch.)
900W @ Bridge-Mono, 8 ohms
Specifications:
Sensitivity (volts RMS) for full rated power at 4 ohms - 1.25
Frequency Response (at 1 watt, 22 Hz - 20 kHz) - +0 dB, –1 dB
Signal to Noise Ratio below rated power (20 Hz to 20 kHz, inputs terminated)
A-weighted, below rated power - > 100 dB
No weighting, below rated power - > 95 dB
Total Harmonic Distortion (THD) at 1 full bandwidth power, from 20 Hz to 1 kHz - < 0.5%.
Intermodulation Distortion (IMD) 60 Hz and 7 kHz at 4:1, from full rated output to –30 dB - < 0.3%.
Damping Factor (8 ohm): 10 Hz to 400 Hz - > 200
Crosstalk (below rated power),
at 1 kHz - –75 dB,
at 20 kHz - –50 dB.
Input Impedance (nominal) (balanced,unbalanced) - 20 kilohms, 10 kilohms
Load impedance,
Stereo - 4-8 ohms,
Bridge mono - 8 ohms,
AC Line Voltage and Frequency Configurations Available (± 10%),
120 VAC 60 Hz, 100 VAC 50/60 Hz, 220 VAC 50 Hz, 230-240 VAC 50 Hz,
Ventilation - Flow-through ventilation from front to back,
Cooling - Internal heat sinks with forced-air cooling,
Air Volume Requirements (per minute per unit) - 80.15 ft3 (2.27 m3),
Dimensions: 19'W x 15.2" D x 3.5" H,
Weight: 25.7 lbs.
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