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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