Pioneer GM-D8604 Owner's Manual - Page 5

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Setting the unit

What's what

Front side

Rear side

To adjust the switch, use a flathead screwdri-

ver if needed.

1 POWER/PROTECT indicator

The power indicator lights up to indicate

power ON.

! If something is not normal, the indicator

turns red.

2 FREQ (cut off frequency) control

Cut off frequency selectable from 40 Hz to

500 Hz if the LPF/HPF select switch is set to

LPF or HPF.

3 GAIN (gain) control

Adjusting gain controls CHANNEL A (chan-

nel A) and CHANNEL B (channel B) helps

align the car stereo output to the Pioneer

amplifier. Default setting is the NORMAL

position.

If output remains low, even when the car

stereo volume is turned up, turn controls to

lower level. If distortion occurs when the car

stereo volume is turned up, turn these con-

trols to higher level.

! If using only one input plug, set the gain

controls for speaker outputs A and B to

the same position.

! For use with an RCA equipped car stereo

(standard output of 500 mV), set to the

NORMAL position. For use with an RCA

equipped Pioneer car stereo, with maxi-

mum output of 4 V or more, adjust level

to match that of the car stereo output.

! For use with an RCA equipped car stereo

with output of 4 V, set to the H position.

4 LPF (low-pass filter)/HPF (high-pass fil-

ter) select switch

Switch the settings based on the connected

speaker.

! When the Subwoofer is connected:

Select LPF. This eliminates high range

frequency and outputs low range fre-

quency.

! When the full range speaker is con-

nected:

Select HPF or OFF. HPF eliminates low

range frequency and output high range

frequency. OFF outputs the entire fre-

quency range.

5 INPUT SELECT (input select) switch

Select 2CH for two-channel input and 4CH

for four–channel input.

Setting gain properly

! Protective function included to prevent

malfunction of the unit and/or speakers

due to excessive output, improper use or

improper connection.

! When outputting high volume sound etc.,

this function cuts off the output for a few

seconds as a normal function, but output

is restored when the volume of the head

unit is turned down.

! A cut in sound output may indicate impro-

per setting of the gain control. To ensure

continuous sound output with the head

unit at a high volume, set amplifier gain

control to a level appropriate for the preout

maximum output level of the head unit, so

that volume can remain unchanged and to

control excess output.

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