Crown CP660 User manual

CP660
SIX CHANNEL AMPLIFIER
The Crown®CP660 six-channel power
amplifier is designed for a wide range
of demanding applications, including
multi-channel, distributed sound, surround
and stereo systems. Perfect for applications
with multi-zone needs, such as cafeterias,
restaurants, schools and theaters, the CP660’s
efficient design allows convenient, cost-effec-
tive, reliable operation in a compact, two-rack-
space format.
This highly efficient amplifier includes a power-
sharing design that provides extra power to
channels where it’s needed most. A discrete-
component power design employs rugged,
high-current metal output transistors for
maximum reliability. The super-quiet, variable-
speed fan operates according to thermal de-
mand, while the front-panel air intakes provide
the most efficient cooling in any rack.
The CP660 brings you maximum flexibility for
configuration, with six independent amplifier
channels. Each pair of output channels can
be bridged, using convenient switches on
the back panel, to provide three, four or five
channels with higher output power. In addi-
tion, each channel includes its own back-panel
gain control for convenient system balancing.
Barrier strip connectors are provided for the
inputs, and heavy-duty 5-way binding posts
allow secure output connections. Plus, your
investment in a CP660 is backed by Crown’s
unequaled Three-Year, No-Fault, Full Warranty
that covers everything.
For more details about the Crown CP660,
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
Note: All measurements are related to 120-VAC units 60Hz in
Stereo mode with 8-ohm loads at 1-kHz rated power unless
otherwise specified. Specifications for units supplied outside
the U.S.A. may vary slightly at different AC voltages and
frequencies.
Power
Output Power:
Load Impedance: Safe with all types of loads.
Rated for 4 and 8 ohms in Dual mode, 8 ohms
in Bridge mode.
Required AC Mains: North American units
are 120-VAC, 60-Hz only; 100- and 240-VAC
(±10%) 50 Hz units are available.
AC Line Current,
100 Volts: 7.8 A;
120 Volts: 6.5 A;
240 Volts: 3.3 A.
AC Line Connector: NEMA 5-15P (15 A) on
North American units.
Performance
Frequency Response: +0/–1 dB from 20 Hz to
20 kHz at 1 watt.
Phase Response: ±15 degrees from 20 Hz to
10 kHz at 1 watt.
Signal to Noise Ratio, A-Weighted: Better than
105 dB below rated 1 kHz power at 8 ohms.
Total Harmonic Distortion (THD): rated power,
0.3% or less true THD.
Intermodulation Distortion (IMD): (60 Hz and
7 kHz at 4:1) Less than 0.25% at rated power to
–35 dB below rated power at 8 ohms.
Damping Factor: Greater than 250 from 20 Hz
to 400 Hz.
Controls (All located on front panel)
Level: A rotary level control for each channel
located on the rear panel.
Power: An on/off rocker switch located on the
front panel.
Mode: A two-position switch for each pair of
channels (three total) located on the back panel
used to select Dual or Mono operation.
Features
• Built for maximum flexibility, with the best
watts-to-dollars ratio around
• Six independent amplifier channels to suit
a wide range of applications
• Six independent level controls on the back
panel allow convenient level balancing of
all channels
• Three Dual/Mono switches on the back
panel give a broad range of flexibility in
configuring your system
• Compact design is rack-mountable in two
rack spaces (3½ inches/89 mm)
• Super-quiet, variable-speed fan with auto
trigger for silent, effective cooling
• High-quality, standard-spaced double ba-
nana-jack/binding-post output connections
facilitate any type of speaker connection,
including heavy-gauge wire
• Three Year, No-Fault, Fully Transferable
warranty completely protects your invest-
ment and guarantees its specifications
1 Channel / 1 Load
4-Ohm 8-Ohm
130W
100W
75W
90W
70W
60W
250W
6 Channels / 3 Loads
4 Channels / 2 Loads
6 Channels / 6 Loads
4 Channels / 4 Loads
*1 kHz Power: refers to maximum average power
in watts at 1 kHz with 0.3% THD.
CP660 *1 kHz Power
Six-Channel Mode
Bridge Mode
2 Channels / 1 Load
200W
150W

Crown International, Inc.
1718 W. Mishawaka Rd.
Elkhart, IN 46517-9439
TEL: [phone]
FAX: [phone]FAX
www.crownaudio.com
7/05 128414-1B
Crown’s Three-Year, No-Fault, Fully Transferable Warranty
Crown offers a Three-Year, No-Fault, Fully Transferable Warranty for every new Crown ampli-
fier—an unsurpassed industry standard. With this unprecedented No-Fault protection, your new
Crown amplifier is warranted to meet or exceed original specifications for the first three years of
ownership. During this time, if your amplifier fails, or does not perform to original specifications,
it will be repaired or replaced at our expense. About the only things not covered by this warranty
are those losses normally covered by insurance and those caused by intentional abuse. And the
coverage is transferable, should you sell your amplifier.
See your authorized Crown dealer for full warranty disclosure and details. For customers outside
of the USA, please contact your authorized Crown distributor for warranty information or call
574-294-8200.
CP660
Indicators
Signal: A green LED for each channel which
flashes to show audio output.
Clip: A yellow LED for each channel which
turns on when distortion becomes audible in
the amplifier output.
Temp: A red LED which turns on when the
temperature of the amplifier gets too high and
the fan is in full-speed operation mode. If the
maximum operating temperature is exceeded,
this LED remains on while the amplifier cools
down.
Power: A green LED which turns on when the
amplifier has been turned on and has power.
Input/Output
Input Connector: Three-terminal barrier block
balanced connectors.
Input Impedance (nominal): 20 k ohms, bal-
anced; 10 k ohms, unbalanced.
Input Sensitivity: 0.7 volts for standard 1-kHz
power at 8 ohms.
Output Connectors: One set of 5-way color-
coded binding posts for each channel. The
output connections can accommodate banana
plugs, double banana plugs, or wire as large as
10 gauge.
Output Impedance: Less than 32 milliohms.
DC Output Offset: < ±50 millivolts.
Output Signal,
Dual: Unbalanced; two separate channels
per pair.
Bridge-Mono: Balanced; single-channel per
pair. Odd-numbered controls are active;
Even-numbered controls should be turned
down.
Protection
The CP660 amplifier is protected against
shorted, open or mismatched loads; overloaded
power supplies; excessive temperature; chain
destruction phenomena; input overload dam-
age; and high-frequency blowups. It also pro-
tects loudspeakers from input/output DC, large
or dangerous DC offsets and turn-on/turn-off
transients.
Mechanical
Cooling: Internal heat exchangers with on-de-
mand forced air cooling.
Dimensions: EIA Standard 19-inch rack mount
width (EIA RS-310-B), 3.5-inch (8.9-cm) height
and 12.75-inch (32.3-cm) depth behind front
mounting surface.
Weight: Center of gravity is 6 inches (15.2
cm) behind the front mounting surface, and 7
inches (17.8 cm) in from the outer edge of the
left rack ear. 25 lbs. (11.4 kg) shipping weight.
Specifications subject to change without prior notice. Latest
information available at www.crownaudio.com.
Crown and Crown Audio are registered trademarks of Crown
International, Inc. Printed in U.S.A.
© 2005 Crown Audio®, Inc.