Output Power:; Frequency Response:; Load Impedance:- Page 11

INSTALLED SOUND



SPECIFICATIONS

Performance

Output Power:

 See power charts below.

Voltage Gain at 1kHz:

CDi 1000: 30.5 dB 

CDi 2000: 32.9 dB 

CDi 4000: 34.2 dB 

CDi 6000: 37.1 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, bal-

anced; 10 k ohms, unbalanced.

Maximum Input Signal:

 +22 dBu typical.

AC Line Voltage and Frequency Configurations 

Available: 

100V, 120V, 220-240V, 

50/60 Hz.   

AC Line Current:

    CDi 1000: 6.8A 

    CDi 2000: 8.3A 

    CDi 4000: 10.5A 

    At Idle: Draws no more than 38 watts.
    CDi 6000: 15.3A 

    At Idle: Draws no more than 180 watts.

Operating Temperature:

 0° C to 40° C at 95% 

relative humidity (non-condensing). 

DSP Section

Input EQ:

 6 parametric filters per channel with 

adjustable Q, ±15 dB boost/cut. Also adjustable 

high and low shelving filters. This 8-filter EQ 

section can be bypassed.

Crossover Filters:

 Highpass and lowpass per 

channel. Butterworth 6/12/18/24 dB per octave and 

Linkwitz-Riley 24/48 dB per octave. Also includes 

±15 dB bandpass gain and polarity control.

Output EQ: 

8 parametric filters per channel with 

adjustable Q, ±15 dB boost/cut. This 8-filter EQ 

section can NOT be bypassed. Filters are enabled 

individually.

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 presets. 19 are user-definable

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 and 

front panel lockout.

LCD Screen:

 Backlit liquid crystal display shows 

speaker presets and signal processing.

Signal Indicator:

 Green LED, one per channel, 

illuminates when a very low-level signal is pres-

ent 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 pro-

duce audio.

Clip Indicator:

 Red LED, one per channel, turns 

on at the threshold of audible distortion.

Temp Indicator:

 Red LED, one per channel, 

illuminates under 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:

CDi 1K, 2K, 4K: NEMA 5-15P (15A). 

CDi 6000: NEMA 6-10P (20A) 

IEC C20 (20A).

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/100V loads. Bridge-mono connec-

tors work with 4-8 ohm or 140V loads.

HiQnet USB Connector:

 Type B, connects to a 

USB port on a PC.

Protection

CDi-Series amplifiers are protected against 

shorted, open or mismatched loads; over-

loaded power supplies; excessive tempera-

ture; 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.

Included Accessories

Non-touch cover 

Locking level-control knobs.

Construction

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. CDi 6000 is 16.2 in. (41.15 cm) deep.

Net Weight:

CDi 1K. 2K, 4K: 19 lb (8.6 kg). 

CDi 6K: 24 lb (10.9 kg).

Shipping Weight:

CDi 1K, 2K, 4K: 22 lb (10.0 kg). 

CDi 6K: 30 lb (13.6 kg).

Regulatory Certifications

Note: All measurements apply to all models of CDi 

Series amplifiers in stereo mode with 8-ohm loads and 

an input sensitivity of 26 dB gain, 1 kHz at rated power 

unless other otherwise specified. Specifications for 

units supplied outside the U.S.A. may vary slightly at 

different AC voltages and frequencies.

T

he CDi Series of Crown® amplifiers are professional tools designed and built for installed sound 

applications. The series includes four models which are identical except for output power: CDi 

1000, CDi 2000, CDi 4000 and CDi 6000. All are rugged and lightweight, and offer unmatched value 

in their class. CDi-Series amplifiers feature an LCD screen with DSP speaker presets. 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.

5/09                                                             139648-4