Crown Audio CTs Series (Multi-Channel USP_CN) - Manual (Page 5)

Operation Manual
CTs Multi-Channel Power Amplifiers
page 8 page 9
CTs Multi-Channel Power Amplifiers
Operation Manual
2.5 Back Panel Controls
and Connectors
Note: CTs 8200USP/CN is shown. Some CTs
4200USP/CN features are in different
loca tions.
K. AC Power Cord Connector
Standard IEC type 320 inlet.
120V models: 15-amp.
220-240V models: 10-amp.
Voltage is indicated above IEC inlet.
L. Output Connectors
One four-pole terminal strip for every two
chan nels with touch-proof cover. Accepts up to
10 AWG terminal forks. To connect outputs, first
remove the touch-proof cover plate covering
the terminal strip by removing the screw which
holds it in place.
M. USP/CN Module
Built into the amplifier, this module allows
con nection to a CobraNet network. Please see
Sec tion 2.6 for details.
N. Channel Level Controls
One 21-position detented rotary potentiometer
per channel, ranging from infinity (-70 dB) to
0 dB attenuation. Refer to Section 4.2.12 for
precise dB attenuation increments for each
detent.
O. Input Connectors
Removable Phoenix-style barrier connectors for
balanced input. Also can be used as a CobraNet
input or a backup for Cobranet (see Section
3.2.6).
P. Mode Switch
Used on each consecutive pair of channels, this
four-position switch is used to select the
amplifier’s mode of operation: Dual 8/4 ohms,
Dual 70V, Bridge-Mono 16/8 ohms, and
Bridge-Mono 100V.
IMPORTANT: Be sure to power off the
amplifier before change the Mode-
switch setting. If this is not done, the Bridge
light will flash to indicate that the power must
be cycled off and back on to reset the mode.
Q. Cooling Vents
Front-to-rear forced airflow.
2 Setup (continued)
Figure 2.4 CTs 8200 USP/CN Back Panel
(Shown with Touch-proof Cover Removed)
Figure 2.5 USP/CN Controls, Indicators and Connectors
(Note: Actual Product Artwork May Vary Slightly)
2.6 CobraNet and Control Module:
Connectors, Indicators and
Con trols
A. AUX Connector
AUX input, AUX output, and Foldback. See
Sections 3.2.7, 3.2.8, and 4.1.
B. Preset Indicator
Signals the number of the current preset, if
active, by flashing a series of flashes equal
to the current preset number. See Section
3.2.2.
C. Reset/Preset Switch
Activated by inserting a small item, such as
a paper clip, this switch is used to change
presets, restore settings to factory default or
restore all the presets to the factory defaults.
During operations of the switch, the Data
indicator flashes as an aid to the user. See
Section 3.2.9.
A B C D E
2 Setup (continued)
D. Data Indicator
Flashes when the amplifier receives a valid
command that is addressed to the amplifier.
See Section 3.2.1.
E. CobraNet Network Connectors
The dual RJ45 CobraNet connectors allow a
Primary & Secondary connection to the 100
Mbps Ethernet network. Should the Primary
connection lose link activity with the
net work, the module will automatically
switch to the Secondary connection to
ensure uninterrupted audio and control. The
indicators on the RJ45 connectors display
network information concerning the Ethernet
and CobraNet connections. See Sections
3.2.3, 3.2.4, and 3.2.5.