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The CDi Series of Crown amplifiers are professional tools designed and built for

installed sound applications. “CDi” stands for Contractor Digital Intelligence. The series includes two models which are identical except for output power: CDi 1000 and

CDi 2000. Both are rugged and lightweight, and offer unmatched value in their class.

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.


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

Voltage Gain at 1kHz, 8 ohm rated output:

CDi 2000: 32.9 dB

Frequency Response: ±0.25 dB from 20 Hz to 20 kHz at 1 watt into 4 ohms.

Phase 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:

CDi 2000: 6.9A

At Idle: Draws no more than 90 watts.

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

DSP Section

EQ: 6 parametric filters per channel with adjustable Q, boost/cut ±15 dB. Also adjustable high and low shelving filters.

Filters: Highpass and lowpass per channel. Butterworth 12/18 dB per octave and Linkwitz-Riley 24 dB per octave. High and low shelving filters, one per channel.

Delay: Up to 50 msec total delay per channel.

Output Limiter: Prevents clipping and protects loudspeakers. Choice of –3, –6, or –12 dB threshold per channel.

Presets: 20 user-definable loudspeaker presets.

Front Panel Controls and Indicators

Level: Detented rotary level control, one per channel.

Power Switch: On/off switch applies AC power to the amplifier.

Sel/Prev/Next Buttons: Three buttons near the LCD screen are used to access menu items.

LCD Screen: Backlit liquid crystal display shows speaker presets and signal processing.

Signal Indicator: Green LED, one per channel, flashes when a very low-level signal is present at input.

–10 Indicator: Green LED flashes when output signal exceeds –10 dB below clip.

–20 Indicator: Green LED flashes when output signal level exceeds –20 dB below clip.

Ready Indicator: Green LED, one per channel, illuminates when the amplifier is ready to produce audio.

Clip Indicator: Red LED, one per channel, turns on at the threshold of audible distortion.

Temp/Fault Indicator: Red LED, one per channel, illuminates under Fault or excessive temperature conditions.

Power Indicator: Blue LED illuminates when the amplifier has been turned on and has power.

Rear Panel Controls and Connectors

AC Line Connector: NEMA 5-15P (15A).

Input Connector: Two 3-pin removable Phoenix-type connectors each accept a balanced line-level input signal.

Output Connectors: 4-position barrier strip with connectors for dual louspeakers or bridge-mono loudspeaker. Dual connectors work with 2-8 ohm or 70V loads. Bridge-mono connectors work with 4-8 ohm or 140V loads.

HiQnet USB Connector: Type B, connects to a HiQnet network.


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


Chassis: Steel.

Cooling: Proportional speed fan with front-to-rear airflow.

Dimensions: EIA Standard 19-in. rack mount width (EIA RS-310-B), 3.5 in. (8.9 cm) high and 12.25 in. (31.11 cm) deep behind mounting surface.

Net Weight:

19 lb (8.6 kg)

Shipping Weight:

22 lb (10.0 kg)

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