Crown Xs900 Power Amplifier

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The Xs Series of power amplifiers from Crown represents a new era in affordable, quality power amplification. Xs Series amplifiers are professional stereo power amplifiers engineered to meet demanding audio requirements - reliably and within budget.

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Features:

• Housed in a rugged, all-steel 2U chassis.
• Efficient forced-air fan prevents excessive thermal buildup
• XLR-1/4" combo inputs, daisy-chain XLR outputs, touch-proof binding post outputs and Speakon outputs.
• Precision detented level controls, power switch, and eight LEDs which indicate signal and clip for each channel, power, AC mains, bridge mode, temperature and fault conditions.
• Microprocessor-controlled protection system.
• Three-Year, No-Fault, Fully Transferable Warranty completely protects your investment.

Output

• 8 Ohms (Stereo) 600
• 4 Ohms (Stereo) 900
• 2 Ohms (Stereo) 1,200*
• 8 Ohms (Bridged Mono) 2,100
• 4 Ohms (Bridged Mono) 2,500*

Maximum Average Power at 1 kHz with 0.15% THD

• at 0.5% THD

The following applies to unit in Stereo mode with 8-ohm load and rated input sensitivity unless otherwise specified.

• Sensitivity (volts RMS) for full rated power at 4 ohms: 1.4V
• Frequency Response (at 1 watt) 22 Hz to 22 kHz: ±1 dB.
• Phase Response (degrees at 1 watt, 20 Hz to 20 kHz): +5°, - 18°
• Signal-to-Noise Ratio: A-weighted, below rated power: > 102 dB. 22Hz to 22kHz, below rated power: > 97 dB.
• Total Harmonic Distortion (THD) at full bandwidth power, from 20 Hz to 20 kHz: < 0.5%.
• Intermodulation Distortion (IMD): (60 Hz and 7 kHz at 4:1) from full rated output to -40 dB: < 1%.
• Damping Factor (8 ohm) 10 Hz to 400 Hz: >200.
• Crosstalk (below rated power): Xs700 (1 kHz, 20 kHz): > 55 dB, > 55 dB
• Voltage Gain (at maximum level setting): Xs500: 32:1 (30.1 dB)
• Load Impedance: Safe with all types of loads. 2 to 8 ohms in Stereo, 4 to 8 ohms in Bridge Mono.
• AC Line Voltage and Frequency Configurations: Available (±10%): 120VAC/60 Hz and 230VAC/50 Hz.

Controls

• Level: Two front-panel, gray rotary level controls, one for each channel.
• Power On: Front-panel switch; on when in the right-hand position.

Indicators

• Signal: Two green LEDs, one for each channel, illuminates when the channel's input signal level is above -40 dBu.
• Clip: Two front-panel red LEDs, one for each channel, illuminates when the channel's output signal is being overdriven.
• Power: Yellow front-panel LED indicates amplifi er has been turned on and AC power is available.
• AC Mains: Red front-panel LED indicates the presence of AC power at the power cord, even if the amplifi er is not turned on.
• Fault: Red front-panel LED illuminates when amplifier is in protect mode. Also illuminates briefl y during normal power-up when amplifi er is first switched on.
• Bridge: Yellow LED indicates that amplifier is in bridge mode
• Temp: Red LED indicates that channel(s) are in thermal protect mode.

Input Connectors

• XLR-1/4" combo connectors: One per channel, 3-pin female XLR connector and TRS 1/4" phone jack accept balanced or unbalanced signals.
• 3-pin Phoenix-style connectors: One per channel, accepts balanced or unbalanced signals.
• Input Impedance (nominally balanced, nominally unbalanced): 20 k ohms, 10 k ohms.

Output Connectors

• Balanced XLR connectors: One per channel, 3-pin male XLR connector in parallel with XLR-1/4" combo and Phoenix-style input connectors for daisychain operation.
• 5-Way binding post output connectors: One pair per channel; accept banana plugs, spade lugs or bare wire.
• 4-Pole Speakon output connector: One connector per channel. Accepts a 4-pole Speakon connector.
• DC Output Offset (shorted input): ±75 millivolts.
• Output Signal: Stereo, unbalanced, two-channel

Protection Xs Series amplifi ers provide extensive protection and diagnostic capabilities, including output current limiting, microprocessor-controlled 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.
• Dimensions: EIA Standard 19 inch (48.3 cm) rack mount width (EIA RS-310-B), 3.5 inch (8.9 cm) height and 15.675 inch (39.8 cm) depth behind the mounting surface.