Crown ComTech DriveCore CT 475 Operation Manual page 5

4 Setup
4.6 Wire Your System
Before you wire your system, you must be familiar with
the capabilities of the input routing.
The DriveCore amplifier can be configured in two ways:
1. The input for a channel goes out the same channel.
This option is the standard configuration.
C 1 C 1
HANNEL HANNEL
C 2 C 2
HANNEL HANNEL
C 3 C 3
HANNEL HANNEL
C 4 C 4
HANNEL HANNEL
Figure 4.6.1 Four channels with no input routing
C 1 C 1
HANNEL HANNEL
C 2 C 2
HANNEL HANNEL
C 3 C 3
HANNEL HANNEL
C 4 C 4
HANNEL HANNEL
C 5 C 5
HANNEL HANNEL
C 6 C 6
HANNEL HANNEL
C 7 C 7
HANNEL HANNEL
C 8 C 8
HANNEL HANNEL
Figure 4.6.2 Eight channels with no input routing
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4.7 Connect to AC Mains
Connect your amplifier to the AC mains power source
(power outlet) with the supplied AC power cordset. First,
2. The input for a channel can be routed to the next
connect the IEC end of the cordset to the IEC connector
channel, overriding the wired input signal for that
on the amplifier; then, plug the other end of the cord set
channel. This method simplifies input wiring and
to the AC mains.
minimizes use of y-cables.
WARNiNg: The third prong of this connector
C 1 C 1 (ground) is an important safety feature. do not
HANNEL HANNEL
attempt to disable this ground connection by
C 2 C 2
HANNEL HANNEL
using an adapter or other methods.
C 3 C 3
HANNEL HANNEL
Amplifiers don't create energy. The AC mains voltage and
current must be sufficient to deliver the power you
C 4 C 4
HANNEL HANNEL
expect. If the AC line voltage varies out of an acceptable
Figure 4.6.3 Two channel to four channel routing range, the amplifier's power supply turns off and the blue
Power LED flashes. The amplifier will turn back on when
the AC line voltage returns to safe operating levels.
C 1 C 1
HANNEL HANNEL
Figure 4.7.1 provides voltage limits for all amplifier AC
C 2 C 2 voltage configurations. Also, the amplifier must be run
HANNEL HANNEL
within the specified mains frequency requirements
C 3 C 3
HANNEL HANNEL
(indicated on the amplifier's back panel label). If you are
C 4 C 4 unsure of the output voltage of your AC mains, please
HANNEL HANNEL
consult your electrician.
Figure 4.6.4 One channel to four channel routing
C 1 C 1
HANNEL HANNEL
Model Under-Voltage Limit
C 2 C 2
HANNEL HANNEL
All Models 90 VAC
C 3 C 3
HANNEL HANNEL
C 4 C 4 Figure 4.7.1 AC Under-Voltage and Over-Voltage Limits for
HANNEL HANNEL
Various Amplifier Models
C 5 C 5
HANNEL HANNEL
C 6 C 6
HANNEL HANNEL
C 7 C 7
HANNEL HANNEL
C 8 C 8
HANNEL HANNEL
Figure 4.6.5 Four channel to eight channel routing
Input routing is configured using the dip switches on the
back of the amplifier. See Section 11 input Routing
for information on configuring switches.
Note: ComTech DriveCore amplifiers can NOT be
bridged.
CT Power Amplifiers CT Power Amplifiers
4 Setup
4.8 Startup Procedure
Use the following procedure when first turning on your
amplifier:
1. Turn down the level of your audio source.
2. Turn down the level controls of the amplifier (see
Section 7.6).
3. Turn on the "Power" switch. The Power indicator
should glow.
4. Turn up the level of your audio source to an
optimum level.
5. Turn up the Level controls on the amplifier until the
desired loudness or power level is achieved.
If you ever need to make any wiring or installation
changes, don't forget to turn off the amplifier and
discon nect the power cord.
For help with determining your system's optimum gain
structure (signal levels) please refer to the Crown
Ampli fier Application Guide, available online at
www.crownaudio.com.
Over-Voltage Limit
264 VAC
Operation Manual Operation Manual
5 Precautions
Your amplifier is protected from internal and external
faults, but you should still take the following
precautions for optimum performance and safety:
1. Before use, your amplifier first must be configured
for proper operation, including input and output
wiring hookup. Improper wiring can result in
serious operat ing difficulties. For information on
wiring and config uration, please consult the Setup
section of this manual or, for advanced setup
techniques, consult Crown's Amplifier Application
Guide available online at www.crownaudio.com.
2. Use care when making connections, selecting
signal sources and controlling the output level.
The load you save may be your own!
3. Do not short the ground lead of an output cable to
the input signal ground. This may form a ground
loop and cause oscillations.
4. Never connect the output to a power
supply, battery or power main. electrical
shock may result.
5. Tampering with the circuitry, or making
unauthorized circuit changes may be hazardous
and invalidates all agency listings.
6. Do not operate the amplifier with the red Clip LEDs
constantly flashing.
7. Do not overdrive the mixer, which will cause
clipped signal to be sent to the amplifier. Such
signals will be reproduced with extreme accuracy,
and loudspeaker damage may result.
8. Do not operate the amplifier with less than the
rated load impedance. Due to the amplifier's
output protec tion, such a configuration may result
in premature clipping and speaker damage.
9. Output of amplifier cannot be bridged or multiple
channels cannot be connected together.
Remember: Crown is not liable for damage that results
from overdriving other system components.
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