-13-
volume control, adjust the Level control to decrease the
output from the system. Once the correct setting is
found, this control should not require any further adjustment.
4
4/3/2 Channel Mode Selector
Set this switch to the 4-Channel (4CH), 3-Channel (3CH)
or 2-Channel (2CH) position as appropriate for the
type of system and speakers you are using.
5
Crossover Filter Selectors
These switches allow selection of the frequency filters that
permit the respective channels of the amplifier to be
used to reproduce the entire audio range or just the
bass range.
In the "FULL" position of the switch, the response is flat
and unaffected so the entire audio frequency range is
reproduced by the amplifier. Use this setting if the
respective amplifier channels are being used to power
a full range speaker system.
In the "LPF" setting, only the bass frequencies
below
the frequency set by the Crossover Frequency Control
6
will be amplified and fed to the speakers. Use this
setting if the respective amplifier channels are being
used to power a sub-woofer speaker system.
6
Crossover Frequency Controls
These Controls select the crossover frequency when
the Filter Selector
5
is in the "LPF" setting. Adjust it to the
appropriate position for the characteristics and crossover
frequency requirements of the speaker system with which
the respective channels of the amplifier are being used.
7
Bass Boost Switches
This switch is used to accentuate the bass frequencies
by adding 12 dB of boost to the signal (at 60 Hz.) on the
respective channels.
8
Cooling Fan
This unit incorporates a fan to provide continuous air
flow through the unit to keep the heat-sink and components,
safely within their operating temperature range. The fan
is automatically activated wh12 volts is supplied
to the Remote Turn-On terminal.
9
Fuses
The circuitry of the amplifier is protected from damage
by automotive-type fast-blow fuses. If fuse replacement
is necessary, use only fuses of the same ampere rating
as originally supplied with the unit. The use of fuses with
incorrect ratings may cause serious damage to the amplifier.
If fuses blow consistently, carefully check all electrical
connections to the unit.
