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AMPLIFIER ADJUSTMENT
10
Adjusting The Amplifier Input Gain
1. Adjust all amplifier input gain controls to just above minimum
sensitivity (fully counterclockwise).
2. Using the cleanest source (CD), with music playing turn up
the head unit until you can hear distortion. Now turn it down a
bit until you cannot hear the distortion.
3. Increase the Amplifier gain (clockwise) until the onset of
audible distortion. Then decrease the gain to the point just
before the distortion starts. This setting minimizes background
noise and prevents overload.
4. Repeat step 3 for any remaining amplifiers in the system.
Bridging
All two-channel
POWERCLASS
™
amplifiers are capable of being
bridged into a 4 ohm mono output without switches or bridging
modules. This feature permits the creation of a mono channel
for a subwoofer or center channel.
Deriving the mono channel is accomplished by using the left
channel positive wire as the positive speaker wire and the right
channel negative wire as the negative speaker wire. It is
important that a minimum 4 ohms impedance is observed. If
the impedance drops significantly below 4 ohms while the
amplifier is wired in the bridged configuration, the amplifier's
protection circuitry (AP III) may engage.
Heatsink Cooling
The unique heatsink on your
POWERCLASS
™
amplifier has
been designed with fins on the inside of the aluminum mass.
This allows for the transfer
of heat from the circuitry to
the heatsink fins and out
through the vents in the
endplates. Be sure you
have ample space around
the amplifier for cooling, at
least 2" on all sides.
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