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The CDi Series of Crown® Amplifiers are professional tools designed and built for installed sound applications. The series includes three models which are identical except for output power: CDi 1000, CDi 2000, and CDi 4000. All are rugged and lightweight, and offer unmatched value in their class. CDi-Series amplifiers feature an intuitive front-panel LCD screen to guide installers through their configurations. CDi amplifiers also offer onboard DSP for loudspeaker signal processing. 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. CDi-Series amplifiers are protected against shorted, open or mismatched loads; overloaded power supplies; excessive temperature; chain destruction phenomena; excessive output current, and input overload damage. They also protect loudspeakers from input/output DC, large or dangerous DC offsets and turn-on/turn-off transients. Features Extremely versatile; rated for 2-, 4-, 8-ohm loads and 70V and 140V outputs. Switch-mode universal power supply. Intuitive front-panel LCD screen for quick, easy configuration. Onboard digital signal processing includes crossovers, EQ filters, delay, and output limiting. Up to 20 user defined DSP presets are available. Voltage Gain at 1kHz, 8 ohm rated output: - CDi 1000: 30.5 dB
- CDi 2000: 32.9 dB
- CDi 4000: 34.2 dB
Frequency Response: +0/–1 dB from 20 Hz to 20 kHz at 1 watt into 4 ohms.
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): 100 dB (A weighted).
Damping Factor: Better than 500 from 20 Hz to 400 Hz.
Crosstalk: > 70 dB below rated power, 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.
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