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GM-X374/XR/UC
8. OPERATIONS
Power Indicator
The power indicator lights when the
power is switched on.
BFC (Beat Frequency Control) Switch
If you hear a beat while listening to an
MW/LW broadcast with your car stereo,
change the BFC switch using a small
standard tip screwdriver.
LPF (Low-Pass Filter)/HPF (High-Pass Filter) Select Switch
Set the LPF/HPF select switch as follows according to the type of speaker that is connected
to the speaker output connector and the car stereo system:
LPF/HPF Select
Audio frequency range
Speaker
Remarks
Switch
to be output
Type
LPF
(Left)
Very Low Frequency range
Subwoofer
Connect a subwoofer.
OFF
(Center)
Full range
Full range
HPF (Right)
Low Frequency range to
Full range
Use if you want to cut the
High Frequency range
very low frequency range
because it is not necessary
for the speakers you are
using.
Gain Control
Adjusting the gain controls A and B will
help match the output of the car stereo
to the Pioneer amplifier. Normally, set
the gain controls to the “NORMAL”
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.
•
If you only use one input plug, set the gain
controls for speaker outputs A and B to the
same position.
•
When using with an RCA equipped car
stereo (standard output of 500 mV), set to
the NORMAL position. When using with
an RCA equipped Pioneer car stereo with
max. output of 4 V or more, adjust level to
match the car stereo output level.
•
If you hear too much noise when using the
speaker input terminals, turn the gain
control counter-clockwise.
Input Select Switch
For two-channel input, slide this switch
to the left. For four-channel input, slide
this switch to the right.
GM-X374/XR/EW
GM-X374/XR/ES
Summary of Contents for GM-X374XR/ES
Page 4: ...4 1 2 3 4 1 2 3 4 F E D C B A GM X374 XR UC 2 EXPLODED VIEWS AND PARTS LIST 2 1 PACKING ...
Page 6: ...6 1 2 3 4 1 2 3 4 F E D C B A GM X374 XR UC 2 2 EXTERIOR ...
Page 16: ...16 1 2 3 4 1 2 3 4 F E D C B A GM X374 XR UC A A AMP UNIT 1 1 A ...
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