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CH and CL Series Power Amplifiers
2 Setup
Figure 2.18 Jumper Positions to Parallel the Inputs
Operation Manual
2.7.9 All Models: How to Parallel the
Inputs in Stereo Mode
There are three ways to feed the same signal to each
amplifier channel:
1. Buy a "Y" cable. Plug the female end into your
signal cable, and plug the split male ends into both
amplifier inputs.
2. Feed your signal to the Channel-1 input (either
barrier-block or XLR/Combo). Connect a jumper
wire (Figure 2.18) between the barrier-block Chan-
nel-1 (+) screw terminal and the Channel-2 (+)
screw terminal. Connect another jumper wire
between the Channel-1 (–) screw terminal and the
Channel-2
(–) screw terminal.
3. Feed your signal to the Channel-1 input screw
terminals. CH1, CH2, CL1 only: Using a male
XLR-to-male XLR cable, connect Channel-1 XLR
connector to Channel-2 XLR connector. CH4, CL4
only: Using a stereo phone-to-phone cable, con-
nect Channel 1 Combo connector to Channel 2
Combo connector.
2.8 Connect to AC Mains
Connect your amplifier to the AC mains power
source (power outlet) with the supplied AC power
cordset. First, connect the IEC end of the cordset to
the IEC connector on the amplifier; then, plug the
other end of the cordset to the AC mains.
WARNING: The third prong of this connector
(ground) is an important safety feature. Do
not attempt to disable this ground connec-
tion by using an adapter or other methods.
Amplifiers don't create energy. The AC mains volt-
age and current must be sufficient to deliver the
power you expect. You must operate your amplifier
from an AC mains power source with not more than
a 10% variation above or a 15% variation below the
amplifier's specified line voltage and within the
specified frequency requirements (indicated on the
amplifier's back panel label). If you are unsure of the
output voltage of your AC mains, please consult
your electrician.
2.9 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.
3. Turn on the "Power" switch. The Power indica-
tor 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.
6. Turn down the level of your audio source to its
normal range.
If you ever need to make any wiring or installation
changes, don't forget to disconnect the power cord.
For help with determining your system's optimum
gain structure (signal levels) please refer to the
Crown Amplifier Application Guide, available online
at www.crownaudio.com.
page 13
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