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8. OPERATIONS
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Gain and Bass Level Control
Adjusting gain controls A B and the bass level control (CH SUB) will help match output of car stereo to the Pioneer Power Indicator amplifier. Normally, set these controls to the The power indicator lights when �NORMAL (NORM.)� position. If the output
low, even when volume of the car power is switched on. 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.
trols for speaker outputs A and B to the same
� If you only use one input plug, set the gain con-
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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.
� When you want to boost bass, turn the bass level
GM-D515/X1H/EW
control clockwise.
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BFC (Beat Frequency Control) Switch HPF (High-Pass Filter) Select Switch (CH A and CH B)
If you hear a beat while listening to an Set HPF select switch as follows according the type of speaker that is connected to MW/LW broadcast with your car stereo, speaker output connector and the car stereo system: change the BFC switch using a small standard tip screwdriver. HPF Select Audio frequency range Speaker Remarks Switch to be output Type
OFF (Left) Full range HPF (Right) Low Frequency Full range Use if you want to cut the Cut Off Frequency Control because it is not necessary High Frequency very low frequency range 4
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You can select a cut off frequency from 40 to 240 Hz. for the speakers you are
using.
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