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CTs Multi-Channel Power Amplifiers
Operation Manual
1 Welcome
Building on the foundation of the Com-Tech
®
Series, Crown’s CTs Series offers new flexibility
and value for installed sound applications. The
Com-Tech Series were the first to offer inde-
pendent selection of high- and low-impedance
operation for a specific channel, and CTs Series
amplifiers continue that tradition, with power
levels and features carefully chosen to perfectly
integrate into fixed install design requirements.
Modern power amplifiers are sophisticated
pieces of engineering capable of producing
extremely high power levels. They must be
treated with respect and correctly installed if
they are to provide the many years of reliable
service for which they were designed.
In addition, CTs Series amplifiers include a
number of features which require some expla-
nation before they can be used to their maxi-
mum advantage.
Please take the time to study this manual so
that you can obtain the best possible service
from your amplifier.
1.1 Features
•New Crown
®
Switching Power Supply for
reduced weight.
• High power-density, with eight channels in
a 3U chassis and four channels in a 2U
chassis.
• Selectable constant-voltage (70V/100V) or
low-impedance (8/4 ohm) operation for
each channel pair.
• FIT (Fault Isolation Topology) circuitry
isolates faults within affected channels.
• 35 Hz High-Pass Filter (70 Hz in CTs
4200) is automatically inserted when the
channel pair is set for constant-voltage
operation. (corner frequency may be
changed as a service option).
• Accepts new MC accessory modules that
tailor the amplifier to suit specific applica-
tions. Modules available for remote VCA
level control and IQ System
®
Control.
• Comprehensive array of indicators includ-
ing Power and Data, along with Bridge,
Ready, Signal, Clip, Thermal and Fault for
each channel, provide accurate diagnos-
tics.
• Blue Power Indicator flashes if the ampli-
fier shuts off due to an under-/over-voltage
condition on the AC mains.
• Advanced protection circuitry guards
against: shorted outputs, open circuits,
DC, mismatched loads, general overheat-
ing, under-/over-voltage, high-frequency
overloads and internal faults.
• Proven Crown AB+B Multi-Mode
®
output
topology.
• Continuously-variable-speed fans opti-
mize cooling efficiency.
• Three Year, No-Fault, Fully-Transferable
Warranty completely protects your invest-
ment and guarantees its specifications.
2 How to Use This
Manual
This manual provides you with the necessary
information to safely and correctly setup and
operate your amplifier. It does not cover every
aspect of installation, setup or operation that
might occur under every condition. For addi-
tional information, please consult Crown’s
Amplifier Application Guide (available online at
www.crownaudio.com), Crown Tech Support,
your system installer or retailer.
We strongly recommend you read all instruc-
tions, warnings and cautions contained in this
manual. Also, for your protection, please send
in your warranty registration card today, or reg-
ister online at www.crownaudio.com. And save
your bill of sale—it’s your official proof of pur-
chase.
4-ohm (per ch.)
8-ohm (per ch.)
70V (per ch.)
1 kHz
CTs 4200
20 Hz–20 kHz
Dual
4 Channels Driven
260W
200W
220W
215W
190W
220W
*
*
4-ohm (per ch.)
8-ohm (per ch.)
70V (per ch.)
1 kHz 20 Hz–20 kHz1 Channel Driven
270W
220W
250W
225W
210W
245W
8-ohm (per ch. pair)
16-ohm (per ch. pair)
100V (per ch. pair)
1 kHz 20 Hz–20 kHz
Bridge-Mono
2 Channel-Pairs Driven
520W
400W
220W
430W
380W
220W
*
*
8-ohm (per ch. pair)
16-ohm (per ch. pair)
100V (per ch. pair)
1 kHz 20 Hz–20 kHz1 Channel-Pair Driven
560W
440W
250W
450W
420W
245W
Maximum Average Power
in watts with 0.1% THD.
*
Constant Voltage full bandwidth power ratings support
100Hz - 20kHz due to automatic High-Pass Filters.
4-ohm (per ch.)
8-ohm (per ch.)
70V (per ch.)
1 kHz
CTs 8200
20 Hz–20 kHz
Dual
8 Channels Driven
200W
160W
200W
175W
155W
185W
*
*
4-ohm (per ch.)
8-ohm (per ch.)
70V (per ch.)
1 kHz 20 Hz–20 kHz1 Channel Driven
270W
220W
250W
230W
220W
230W
8-ohm (per ch. pair)
16-ohm (per ch. pair)
100V (per ch. pair)
1 kHz 20 Hz–20 kHz
Bridge-Mono
4 Channel-Pairs Driven
400W
320W
200W
350W
310W
185W
*
*
8-ohm (per ch. pair)
16-ohm (per ch. pair)
100V (per ch. pair)
1 kHz 20 Hz–20 kHz1 Channel-Pair Driven
540W
440W
250W
460W
440W
230W
Maximum Average Power
in watts with 0.1% THD.
*
Constant Voltage full bandwidth power ratings support
100Hz - 20kHz due to automatic High-Pass Filters.