PIONEER GM-X742/XR/UC
Manual de Servicio

GM-X942,X742

38

Setting the Unit

Gain Cut Off Frequency Control Power Indicator

sound level too low, even If LPF/HPF select switch is set to The power indicator lights when the volume of the car stereo used along LPF (or HPF), you can select a cut off power is switched on. with this power amplifier is turned up, frequency from 40 to 120 Hz. turn gain control on front of the power amplifier clockwise. If the sound distorts when the volume is turned up, turn the gain control counter-clockwise.

� 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.

Bass Boost Level Control

Bass level control can boost the level around the frequency selected by the bass boost frequency control from 0 to 18 dB. 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 to speaker output connector and the car stereo system: LPF/HPF Select Audio frequency range Speaker Remarks Switch to be output Type
LPF (left) � 40 to 120 Hz Subwoofer Connect a subwoofer. OFF (center) Full range

Bass Boost Frequency Control
HPF (right) 40 120 Hz � Full range Use if you want to cut the

You can select a bass boost frequency very-low-frequency range from 40 to 120 Hz with the bass boost because it is not necessary control. for the speakers you are

� Level Control and Bass Boost using.

Frequency Control can be adjusted only when the LPF/HPF select switch is set to a position other than HPF.