Rear Panel - Crest Audio PRO7200 Owner's Manual

Rear Panel cont.
4
Cooling Fans
The cooling fans operate continuously while the amplifier is on. An
internal temperature sensor increases the speed of the fans during
high temperature conditions. Air enters through the rear and exits
through the front grille. Be sure to allow adequate air flow from the
rear of the rack in which the amp is mounted.
5
Binding Post Output Connectors
Speakers can be connected via the high current binding posts. One
pair of posts is provided (Red- hot, Black- ground) for each channel.
See — Output Connections in chapter 7 for information on Bridged
Mono operation using Binding Posts.
6 Speakon Output Connectors
Speakers can also be connected via industry-standard Speakon (NL-
4) connectors.
One connector is provided for each channel. In Bridged Mono
mode, the Speakon connector for Channel A is used exclusively
Note — Both Binding Post and Speakon output connectors may be
used at the same time. Both sets are are parallel to each other, so if
you use them together be sure calculate the total impedance for each
channel.
For example: If you connect a 4 ohm load to the binding posts on
channel A, and another 4 ohm load via the Speakon connector on
channel A, the total impedance for channel A will be 2 ohms, not 4.
7
IEC power connector
Accepts a standard IEC terminated power cable
See — Connecting Power in Chapter 5.
Features Overview
Never connect a hot
(red) output to ground
or to another hot (red)
output!
In situations where an
UNBALANCED signal is
fed to the amp, it's
important to ground the
unused input. If the invert-
ing (-) input of an amp
channel is left floating, the
gain will drop by 3 dB.
In effect, the amp will not
be as loud. For more
information about this, ask
your dealer or contact
Crest Audio Technical
Support directly.
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