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
Technical Info
Power (1 kHz power):
2-ohm stereo (per channel): 250W
4-ohm stereo (per channel): 200W
8-ohm stereo (per channel): 145W
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: 0.725
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 Voltages Available (+/-10%): 120VAC, 60 Hz and 230VAC, 50 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(TM) connector 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 ft
