Pioneer GM-D8601: Setting the unit

Section

02

Setting the unit

stereo volume is turned up, turn these con-

What’s what

trols to higher level.

GM-D8601

! For use with an RCA equipped car stereo

Front side

(standard output of 500 mV), set to the

21 3 4

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.

! If you hear too much noise when using

the speaker input terminals, turn the

Rear side

gain control to higher level.

3 LPF (low-pass filter) cut off frequency

control

You can select a cut off frequency from

40 Hz to 240 Hz.

GM-D9601

Front side

4 BASS BOOST REMOTE (bass boost level

remote control) jack

21 3 4

By connecting the Bass boost level remote

control to the jack on the main unit, you will

be able to select a bass boost level from

0 dB to 18 dB.

For instruction of connecting the bass boost

remote control to the amplifier, see the Con-

nection diagram on page 6.

Rear side

Setting gain properly

! Protective function included to prevent

malfunction of the unit and/or speakers

To adjust the switch, use a flathead screwdri-

due to excessive output, improper use or

ver if needed.

improper connection.

! When outputting high volume sound etc.,

1 POWER/PROTECT indicator

this function cuts off the output for a few

The power indicator lights up to indicate

seconds as a normal function, but output

power ON.

is restored when the volume of the head

! If something is not normal, the indicator

unit is turned down.

turns red.

2 GAIN (gain) control

If output remains low, even when the car

stereo volume is turned up, turn controls to

lower level. If distortion occurs when the car

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Section

Setting the unit

02

English

! A cut in sound output may indicate impro-

Signal waveform when outputting at

per setting of the gain control. To ensure

high volume using amplifier gain

continuous sound output with the head

control

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.

! Despite correct volume and gain settings,

the unit sound still cuts out periodically. In

such cases, please contact the nearest

Signal waveform distorted with high output, if

authorized Pioneer Service Station.

you raise the gain of the amplifier the power

changes only slightly.

Gain control of this unit

Preout level: 2 V (Standard: 500 mV)

Preout level: 4 V

Above illustration shows NORMAL gain set-

ting.

Relationship between amplifier gain

and head unit output power

If amplifier gain is raised improperly, this will

simply increase distortion, with little increase

in power.

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