Operation Manual; 5 Advanced Features ; 5.3 Options- Page 16

Operation Manual

CTs Multi-Channel 

Power Amplifiers

page 16

Wall-Mount level control panels for use with 
VCA module:

1-VCAP:

 See Figure 5.5. Used in conjunction with 

a VCA-MC module, this is a single-gang panel pro-
viding remote volume control for one or more CTs 
amplifier channels. The potentiometer on the panel 
is wired directly to one of the VCA connectors on 
the VCA-MC.

4-VCAP: 

See Figure 5.6 This is a two-gang panel 

providing remote volume control for four or more 
CTs amplifier channels. The potentiometers on the 
panel are wired directly to the respective VCA con-
nector on the VCA-MC. 

Refer to the VCA-MC Operation Manual for wiring 
of the single or multiple channel level control.

Your amplifier may have come with an IQ-MC or 
VCA-MC module already factory-installed, or your 
choice of MC modules can be easily added to the 
amplifier by any authorized Crown Service Center. 
Contact Crown Technical Support for more details.

Choosing the Right Module

To order accessory modules for your amplifier, 
please refer to the model tag (located on the back 
panel of the amplifier) for your amplifier’s specific 
model number. Then refer to the chart below to 
select the correct accessory for your requirements.

1-VCAP:

 Single-gang wall-mount panel with

one VCA channel volume control (for any CTs 
model)

4-VCAP:

 Two-gang wall-mount panel with

four VCA channel volume controls (for any CTs 
model)

5.3.2

 Input Sensitivity

The CTs 4200 and CTs 8200 have a fixed input sen-
sitivity of 1.4V. A service option is available for 
other input sensitivities.

MC MODULE

VCA MODULE

CTs 4200

IQ-MC4

VCA-MC4

CTs 4200A

IQ-MC4A

VCA-MC4A

CTs 8200

IQ-MC8

VCA-MC8

Figure 5.3  IQ-MC8 Module

Figure 5.5  1-VCAP Module

5 Advanced Features 
and Options

Figure 5.4  VCA-MC8 Module 

Figure 5.6  4-VCAP Module

5.3  Options

Below are some available options. For current 
options, visit the Crown website at www.crownau-
dio.com.

5.3.1 Control Modules

IQ-MC (IQ Module):

 See Figure 5.3. A single IQ-

MC module provides IQ control and monitoring 
capability to all channels of the amplifier. Features 
include basic IQ amplifier control and monitoring, 
including attenuation, mute, polarity, input level, 
output level, power supply temperature, and thermal 
level meters. Advanced features include IOC, Ther-
mal and Fault error reporting, Load Supervision, 
output limiting, Listen Bus, AUX control port,10 
presets, and real-time “read-only” software indica-
tion of amplifier hardware indicator, level control, 
and mode switch status.

VCA-MC (VCA module):

 See Figure 5.4. Pro-

vides independent remote level control for each 
channel. 4-pin removable Phoenix-style barrier 
connectors provide the +10VDC control voltage, 
ground, and control lines for two amplifier chan-
nels. Thus, 4-channel amplifiers use two connec-
tors; 8-channel amplifiers use four connectors.