PIONEER GM-X542
Manual de Servicio

GM-X642,X542

22

Gain Control Power Indicator

If sound level is too low, even The power indicator lights when the volume of the car stereo used along power is switched on. with this power amplifier is turned up, turn gain control on front of the power amplifier clockwise. If the sound distorts when the volume is turned up,

BFC (Beat Frequency Control) Switch turn the gain control counter-clockwise.

� When using with an RCA equipped car

stereo (standard output of 500 mV), set to If you hear a beat while listening to an the NORMAL position. When using MW/LW broadcast with your car stereo, an RCA equipped Pioneer car stereo with change the BFC switch using a small max. output of 4 V or more, adjust level to standard tip screwdriver. match the car stereo output level.

� If you hear too much noise when using the

speaker input terminals, turn the gain control counter-clockwise.

Bass Boost Level Control

LPF (Low-Pass Filter)/HPF (High-Pass Filter) Select Switch
Set LPF/HPF select switch as follows according the type of level around 60 Hz from 0 to 18 dB.

Bass Boost Level Control can boost the

� Bass Boost Level Control can be adjusted that is connected to speaker output connector and the car

only when the LPF/HPF select switch is stereo system: set to a position other than HPF.

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 HPF (right) Low Frequency Full range Use if you want to cut the High Frequency very low frequency range because it is not necessary for the speakers you are using.