Crown CDi 4000 Stereo Power Amplifier

The Crown CDi 4000 amplifier is a professional tool designed and built for installed sound applications. Crown CDi stands for Contractor Digital Intelligence. The Crown CDi 4000 is rugged and lightweight, and offers unmatched value in their class.

Crown's CDi Series amplifiers feature an LCD screen with DSP speaker presets for crossover frequencies, EQ, limiting, compression, delay, and a subharmonic synthesizer. Other features include a switch-mode universal power supply, useful function indicators, proportional-speed fan-assisted cooling, removable Phoenix-style inputs, barrier strip outputs for low-Z or 70V/140V loads, short-circuit protection and more.

Crown CDi 4000 Stereo Power Amplifier Features:
Accurate, uncolored sound with very low distortion for the best in music and voice reproduction
Advanced protection circuitry guards against: shorted outputs, open circuits, DC, mismatched loads, general overheating, high-frequency overloads and internal faults
Extremely versatile, handling a wide range of speaker impedances and outputs
Switch-mode universal power supply
Integrated DSP with LCD front panel display
Speaker presets for crossover frequencies, EQ, limiting, compression, delay, and subharmonic synthesis
All products fill 2U rack spaces and weigh under 19 pounds
Barrier strip outputs for low-Z or 70V/140V loads, removable Phoenix-style inputs
Three-Year, No-Fault, Fully Transferable Warranty completely protects your investment and guarantees its specifications

Crown CDi 4000 Specifications:

• Voltage Gain at 1kHz, 8 ohm rated output: 34.2db 
  

• Frequency Response: + or - 1 dB from 20 Hz to 20 kHz at 1 watt into 4 ohms.hase Response (at 1 watt, 20 Hz to 20 kHz): 15.
  

• Load Impedance: Safe with all types of loads. Rated for 2 to 8 ohms in Stereo mode, 4 to 16 ohms in Bridge-Mono mode
  

• Sensitivity: 1.4V.
  

• Signal to Noise Ratio (below rated 8-ohm power at 1 kHz):
  105 dB (A weighted).
  

• Damping Factor: Better than 500 from 20 Hz to 500 Hz
  

• Crosstalk: > 80 dB below rated power, 20 Hz to 1 kHz
  

• Common Mode Rejection (CMR): > 45 dB from 20 Hz to 1 kHz
  

• Input Stage: Input is electronically balanced and employs precision 1% resistors
  

• Input Impedance (nominal): 20 k ohms, balanced;10 k ohms, unbalanced
  

• Maximum Input Signal: +22 dBu typical
  

• AC Line Voltage and Frequency Configurations Available: 100V, 120V-240V, 50/60 Hz.
  

• AC Line Current: 11.75A
  

• At Idle: Draws no more than 45 watts.
  

• Operating Temperature: 0 C to 40 C at 95% relative humidity (non-condensing).