-8.1 OPERATIONS8. OPERATIONS AND SPECIFICATIONS
GM-X1024/X1R/UC
Setting the Unit
Gain ControlCut Off Frequency ControlPower Indicator
Adjusting the gain controls A and B willIf the LPF/HPF select switch is set toThe power indicator lights when the
help match the output of the car stereo toLPF or HPF, you can select a cut off power is switched on.
the Pioneer amplifier. Normally, set thefrequency from 50 to 120 Hz.
switch to the ONORMAL� position. If
the output is low, even when the volume
of the car stereo is turned up, turn these
controls clockwise. If there is distortion
when the volume of the car stereo is
turned up, turn these controls counter-
clockwise.
Y If you only use one input plug, set the gain
controls for speaker outputs Aand B to the
same position.
Y Set the gain control to ONORMAL� when
this amplifier is connected to a Pioneer car
stereo with RCAoutput jacks. If the sound
level is too low or distorts, adjust the gain
control.
Y Adjust the gain control to the OMIN� side
of ONORMAL� when this amplifier is con-
nected to a Pioneer car stereo (High volt-
age output type).
LPF (Low-Pass Filter)/HPF (High-Pass Filter) Select Switch
Set the LPF/HPF select switch as follows according to the type of GM-X1024,GM-X924
speaker that is connected to the speaker output connector and the car
stereo system:
LPF/HPF Select Audio frequency rangeSpeakerRemarks
Switchto be outputType
LPF (left)N 50 to 120 HzSub-wooferConnect a sub-woofer.
OFF (center)Full rangeFull range
HPF (right)50 to 120 Hz NFull rangeUse if you want to cut the
very-low-frequency range
RCA Input Select Switchbecause it is not necessary
for the speakers you are
For two-channel input, slide this switchusing.
to the left. For four-channel input, slide
this switch to the right.
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