Crown Audio CTs 2-Channel - Manual (Page 61)

C I N E M A
• 61
www.crownaudio.com
T he Crown ® DSi Series of power amplifiers provides onboard digital signal processing
including crossovers, EQ filters, delay and output limiting. A rear panel HD-15 connec-
tor provides easy input/output connectivity between DSi amplifiers and the new DSi-8M
System Monitor. The intuitive front panel LCD screen guides installers through a setup pro-
cess—featuring presets for the industry-standard JBL cinema loudspeaker systems—to make
confi guration quick and easy. At the touch of a button, Crown’s DSi cinema amplifi ers deliver
perfectly matched performance with each award-winning JBL ScreenArray
® system, making
this the ultimate cinema solution.
SPECIFICATIONS
Performance
Voltage Gain at 1kHz:
DSi 1000: 30.5 dB
DSi 2000: 32.9 dB
DSi 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. DSi 1000
A1 (100V version) is rated for 4 to 8 ohms in
Stereo mode, 8 to 16 ohms in Bridge-Mono
mode.
Sensitivity:
At 8 ohm rated output:
DSi 1000: 1.4V
DSi 2000: 1.4V
DSi 4000: 1.4V
At 4 ohm rated output:
DSi 1000: 1.3V
DSi 2000: 1.2V
DSi 4000: 1.3V
At 2 ohm rated output:
DSi 1000: 1.1V
DSi 2000: 1.0V
DSi 4000: 1.0V
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, A-weighted.
Input Stage: Input is electronically balanced
and employs precision 1% resistors.
Input Impedance (nominal): 20 k ohms, bal-
anced; 10 k ohms, unbalanced.
AC Line Voltage and Frequency Confi gura-
tions Available: 100V, 120V, 220-240V, 50/60
Hz.
AC Line Current:
DSi 1000: 11.56A
DSi 2000: 11.93A
DSi 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 fi lters per channel with
adjustable Q, ±15 dB boost/cut. Also adjust-
able high and low shelving fi lters. This 8-fi lter
EQ section can be bypassed.
Crossover Filters: Highpass and lowpass
per channel. Butterworth 6/12/18/24 dB per
octave, Linkwitz-Riley 24/48 dB per octave.
Also includes ±15 dB bandpass gain and
polarity control.
Output EQ: 8 parametric fi lters per channel
with adjustable Q, ±15 dB boost/cut. This 8-
fi lter EQ section can NOT be bypassed. Filters
are enabled individually.
Output Limiter: Prevents clipping and pro-
tects loudspeakers. Choice of –3, –6, or –12
dB threshold per channel.
Delay: Up to 50 msec total delay per channel.
Presets: 20 presets. One is “DSP OFF.” Fif-
teen are factory-set for JBL Cinema systems.
Four are user-defi nable.
Front Panel Controls and Indicators
Level: Detented rotary level control, one per
channel.
Power Switch: On/off switch applies AC
power to the amplifi er.
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 chan-
nel, illuminates when a very low-level signal
is present at input.
–10 Indicator: Green LED fl ashes when
output signal exceeds –10 dB below clip.
–20 Indicator: Green LED fl ashes when
output signal level exceeds –20 dB below clip.
Ready Indicator: Green LED, one per chan-
nel, illuminates when the amplifi er is ready to
produce 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 amplifi er 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 Phoe-
nix-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.
HiQnet USB Connector: Type B, connects to a
HiQnet network.
HD-15 Connector: For cinema I/O compat-
ibility with DSi-8M System Monitor. See
Figure 1.
Protection
DSi-Series amplifi ers 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
Construction
Chassis: Steel.
Cooling: Proportional speed fan with front-to-
rear airfl ow.
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)
Regulatory Certifications
Other Applications
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.
2/08 139622-2C