PIONEER GM-X554
Manual de Servicio

GM-X554

22
up, turn these controls clockwise. If standard tip screwdriver. (GM-X554/X1R/EW,ES) same position.

Setting the Unit

Gain Control Power Indicator

Adjusting gain controls A and B will The power indicator lights when the help match output of the car stereo power is switched on. to the Pioneer amplifier. Normally, set gain controls to the �NORMAL� position. If the output is low, even when volume of the car stereo is turned

BFC (Beat Frequency Control) Switch

there is distortion when the volume of If you hear a beat while listening to an the car stereo is turned up, turn these MW/LW broadcast with your car stereo, controls counter-clockwise. change the BFC switch using a small

� If you only use one input plug, set the gain

controls for speaker outputs A and B to the

� 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.

LPF (Low-Pass Filter)/HPF (High-Pass Filter) Select Switch
Set LPF/HPF select switch as follows according to the type of speaker that is connected

Input Select Switch to speaker output connector and the car stereo system:

For two-channel input, slide this switch

LPF/HPF Select Audio frequency range Speaker Remarks to the left. For four-channel input, slide
LPF (Left) * � 40 to 120 Hz Subwoofer Connect a subwoofer. OFF (Center) Full range HPF (Right) * 40 120 Hz � Full range Use if you want to cut the very low frequency range* because it is not necessary Cut Off Frequency Control for the speakers you are using. If the LPF/HPF select switch is set to

this switch the right. Switch to be output Type

LPF or HPF, you can select a cut off frequency from 40 to 120 Hz. * See the �Cut Off Frequency Control� section.