Crown XLS 402D Series Amplifiers
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The XLS Series of power amplifiers from Crown represents a new era in affordable, quality power amplification. The line consists of three models in a uniform, rugged chassis, incorporating the best of tried-and-true design principles and innovative features. XLS Series amplifiers are professional stereo power amplifiers engineered to meet demanding audio requirements; reliably and within budget. With over five decades of experience designing and building rock-solid products, Crown is the standard in amp technology. So check out the affordable, Crown XLS Series. They are a powerful argument for quality and value!
Features:
- Reliable design incorporates many popular features
- Selectable high-pass filter on each channel enables amplifier to work more efficiently when full bandwidth is not required
- Pair of linear optocoupler clip limiters protects loudspeakers from being overdriven
- Housed in a rugged, all-steel 2U chassis
- Efficient forced-air fan prevents excessive thermal buildup
- Electronically balanced XLR inputs and touch-proof binding post outputs
- Features precision detented level controls, power switch, and 4 LEDs, which indicate clip for each channel, power and fault conditions
Specifications
Power (1 kHz power):
- 2-ohm stereo (per channel): 570W
- 4-ohm stereo (per channel): 400W
- 8-ohm stereo (per channel): 260W
- 8-ohm bridge mono: 800W
The following applies to units in Stereo mode with 8-ohm loads and rated input sensitivity unless otherwise specified.
Performance
Sensitivity (volts RMS) for full rated power at 4 ohms: 1.025
Frequency Response (at 1 watt) 20 Hz to 20 kHz: ±0.75 dB
Phase Response (degrees at 1 watt)
- at 10 Hz: –10.
- at 20 kHz: +19.
Signal-to-Noise Ratio (20 Hz to 20 kHz) A-weighted, below rated power: > 100 dB No weighting, below rated power: > 95 dB
Total Harmonic Distortion (THD) at 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 –40 dB: < 0.3%
Damping Factor (8 ohm) 10 Hz to 400 Hz: >200
Crosstalk (below rated power)'
- at 1 kHz: –82 dB.
- at 20 kHz: –58 dB
Voltage Gain (at maximum output): 31 dB
Power
Load Impedance: Safe with all types of loads. Rated for 2 to 8 ohms in Stereo, 8 ohms in Bridge-Mono
AC Line Voltage : 120VAC, 60 Hz
Controls
Level: 2 front-panel, black rotary level controls, one for each channel
Power: Front-panel switch; on when in the UP position
Circuit Breaker: Provides overload protection
Indicators
Clip: 2 front-panel red LEDs, 1 for each channel, illuminate when the channel’s output signal is being overdriven
Power: Green front-panel LED indicates amplifier has been turned on and AC power is available
Fault: Yellow front-panel LED illuminates when amplifier is in protect mode. Also illuminates briefly during normal power-up when amplifier is first switched on.
Input/Output
Input Connectors: 1 per channel; back-panel 3-pin female XLR input connectors are provided.
Input Impedance: (nominally balanced, nominally unbalanced): 20 k ohms, 10 k ohms
Output Connectors: One 4-pole Speakon connecotr and one pair of back-panel, 5-way binding posts per channel; accepts banana plugs, spade lugs or bare wire. (European models do not accept banana plugs.)
DC Output Offset (shorted input): ±10 millivolts
Output Signal: Stereo, unbalanced, 2-channel
Protection
XLS Series amplifiers provide extensive protection and diagnostic capabilities, including output current limiting, DC protection, circuit breaker, and special thermal protection for the unit’s transformers.
Construction
Ventilation: Flow-through ventilation from front to back.
Cooling: Internal heat sinks with forced-air cooling for rapid, uniform heat dissipation.
Air Volume Requirements (per minute per unit): 80.15 ft³ (2.27 m³)
Dimensions: EIA Standard 19 in. (48.3-cm) rack mount width (EIA RS-310-B), 3.5 in. (8.9-cm) height and 14 in. (35.6-cm) depth behind the mounting surface.
Weight
Net Weight: 25.3 lbs. (11.5 kg) Shipping Weight: 30.3 lbs. (13.8 kg)
