CDi Series
CDi SERIES
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 process-
ing. Other features include a switch-mode
universal power supply, useful function indica-
tors, proportional-speed fan-assisted cooling,
removable Phoenix-style inputs, barrier strip
outputs for low-Z or 70V/100V/140V loads,
short-circuit protection and more.
Your investment in a CDi-Series amplifier is
backed by Crown’s Three-Year, No-Fault, Fully
Transferable Warranty.
For more details about the Crown CDi Series,
contact the Crown Technical Support Group at
800-342-6939 or 574-294-8200. Also, visit the
Crown Audio website at www.crownaudio.com.
Specifications
Output Power: See power charts below.
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, bal-
anced; 10 k ohms, unbalanced.
Maximum Input Signal: +22 dBu typical.
AC Line Voltage and Frequency Configura-
tions Available: 100V, 120V, 220-240V,
50/60 Hz.
AC Line Current:
CDi 1000: 11.50A
CDi 2000: 11.93A
CDi 4000: 11.75A
At Idle: Draws no more than 45 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 adjust-
able 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.
Features
• Accurate, uncolored sound with very low
distortion for the best in music and voice re-
production
• Extremely versatile; rated for 2, 4, 8 ohm loads
and 70V/100V and 140V outputs
• Advanced protection circuitry guards against:
shorted outputs, open circuits, DC, mis-
matched loads, general overheating, high-fre-
quency overloads and internal faults
• Intuitive front-panel LCD screen for quick,
easy configuration
• Switch-mode universal power supply
• Onboard digital signal processing includes
crossovers, EQ filters, delay, and output limit-
ing
• All products fill 2U rack spaces and weigh under
19 pounds
• Barrier strip outputs for low-Z or 70V/100V/
140V loads, removable Phoenix-style inputs
• Three-Year, No-Fault, Fully Transferable War-
ranty completely protects your investment and
guarantees its specifications
8 ohm Dual (per channel)
1 kHz
Power
275W
500W
700W*
1,000W
1,400W*
4 ohm Bridge-Mono
140V Bridge-Mono
2 ohm Dual (per channel)
4 ohm Dual (per channel)
CDi 1000
With 0.5% THD.
*With 1% THD.
70V Dual (per channel)
500W
100V** Dual (per channel)
500W
**100Vp
8 ohm Dual (per channel)
1 kHz
Power
475W
800W
1,000W*
1,600W
2,000W*
4 ohm Bridge-Mono
140V Bridge-Mono
2 ohm Dual (per channel)
4 ohm Dual (per channel)
CDi 2000
With 0.5% THD.
*With 1% THD.
70V Dual (per channel)
800W
100V** Dual (per channel)
800W
**100Vp
8 ohm Dual (per channel)
1 kHz
Power
650W
1,200W
1,600W*
2,000W
3,200W*
4 ohm Bridge-Mono
140V Bridge-Mono
2 ohm Dual (per channel)
4 ohm Dual (per channel)
CDi 4000
With 0.5% THD.
*With 1% THD.
70V Dual (per channel) 1,000W
100V** Dual (per channel) 1,000W
**100Vp
