PIONEER GM-X924ES
Manual de Servicio

GM-X924/X1R/EW

Setting the Unit
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 switch 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. � Set the gain control to �NORMAL� when this amplifier is connected to a Pioneer car stereo with RCA output jacks. If the sound level is too low or distorts, adjust the gain control. � Adjust the gain control to the �MIN� side of �NORMAL� when this amplifier is connected to a Pioneer car stereo (High voltage output type).

Cut Off Frequency Control
If the LPF/HPF select switch is set to LPF or HPF, you can select a cut off frequency from 50 to 120 Hz.

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 AM broadcast with your car stereo, change the BFC switch using a small 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 Switch
LPF (Left) OFF (Center) HPF (Right)

GM-X1024,GM-X924

Audio frequency range to be output
� 50 to 120 Hz Full range 50 to 120 Hz �

Speaker Type
Sub-woofer Full range Full range

Remarks
Connect a sub-woofer. Use if you want to cut the very-low-frequency range because it is not necessary for the speakers you are using.

RCA Input Select Switch
For two-channel input, slide this switch to the left. For four-channel input, slide this switch to the right.

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