PIONEER GM-X944 Owner's Manual

Cover page of PIONEER GM-X944 Owner's Manual

Owner's Manual for PIONEER GM-X944, downloadable as a PDF file.

We also have service manual to this model.

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ENGLISH
ESPAÑOL
DEUTSCH
FRANÇAIS
ITALIANO
NEDERLANDS
BRIDGEABLE FOUR-CHANNEL POWER AMPLIFIER
AMPLIFICATEUR DE PUISSANCE PONTABLE A
QUATRE VOIES
Owner's Manual
GM-X944
Mode d'emploi
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ENGLISH
ESPAÑOL
DEUTSCH
FRANÇAIS
ITALIANO
NEDERLANDS
BRIDGEABLE FOUR-CHANNEL POWER AMPLIFIER
AMPLIFICATEUR DE PUISSANCE PONTABLE A
QUATRE VOIES
Owner's Manual
GM-X944
Mode d'emploi
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1
Contents
Before Using This Product ...................... 2
In case of trouble .............................................. 2
WARNING ........................................................ 2
Setting the Unit .......................................... 3
Gain Control ...................................................... 3
Cut Off Frequency Control .............................. 3
RCA Input Select Switch .................................. 3
Power Indicator ................................................ 4
BFC (Beat Frequency Control) Switch ............ 4
LPF (Low-Pass Filter)/HPF (High-Pass-
Filter)/BPF (Band-Pass Filter) and
LOW/HIGH Select Switch ........................ 4
Connecting the Unit .................................. 5
Connection Diagram ........................................ 6
Connecting the Power Terminal ........................ 7
Connecting the Speaker Output Terminals ...... 8
Connecting the Speakers and Input wires ........ 9
Installation ................................................ 11
Example of installation on the floor mat
or on the chassis ...................................... 11
Specifications .......................................... 12
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Before Using This Product
2
ENGLISH
ESPAÑOL
DEUTSCH
FRANÇAIS
ITALIANO
NEDERLANDS
Thank you for purchasing this PIONEER
product. Before attempting operation, be
sure to read this manual.
In case of trouble
When the unit does not operate properly,
contact your dealer or the nearest autho-
rized PIONEER Service Station.
WARNING
· Always use the special red battery and ground
wires ([RD-223]
× 2), which are sold separately.
Connect the battery wire directly to the car
battery positive terminal (+) and the ground wire
to the car body.
· Do not touch the amplifier with wet hands.
Otherwise you may get an electric shock. Also,
do not touch the amplifier when it is wet.
· For traffic safety and to maintain safe driving
conditions, keep the volume low enough so that
you can still hear normal traffic sound.
· Check the connections of the power supply and
speakers if the fuse of the separately sold battery
wire or the amplifier fuse blows. Detect the cause
and solve the problem, then replace the fuse with
another one of the same size and rating.
· To prevent malfunction of the amplifier and
speakers, the protective circuit will cut the power
supply to the amplifier (sound will stop) when an
abnormal condition occurs. In such a case, switch
the power to the system OFF and check the
connection of the power supply and speakers.
Detect the cause and solve the problem.
· Contact the dealer if you cannot detect the cause.
· To prevent an electric shock or short-circuit
during connection and installation, be sure to
disconnect the negative (­) terminal of the battery
beforehand.
· Confirm that no parts are behind the panel when
drilling a hole for installation of the amplifier. Be
sure to protect all cables and important equipment
such as fuel lines, brake lines and the electrical
wiring from damage.
This product complies with the EMC
Directives (89/336/EEC, 92/31/EEC)
and CE Marking Directive (93/68/EEC).
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3
Setting the Unit
Gain Control
Adjusting the gain controls A and B will
help match the output of the car stereo
to the Pioneer amplifier. Normally, set
the gain controls to the "NORMAL"
position. If the output is low, even when
the volume of the car 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.
· If you only use one input plug, set the gain
controls for speaker outputs A and B to the
same 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.
RCA Input Select Switch
For two-channel input, slide this switch
to the left. For four-channel input, slide
this switch to the right.
Cut Off Frequency Control
Combining LPF/HPF/BPF and
LOW/HIGH select switch settings lets
you select between cut off frequencies
from 40 to 120 Hz and 3k to 9k Hz.
(Example: LPF and HIGH)
0
-3
(dB)
(Hz)
(3 kHz) (9 kHz)
Frequency
Level
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4
ENGLISH
ESPAÑOL
DEUTSCH
FRANÇAIS
ITALIANO
NEDERLANDS
Power Indicator
The power indicator lights when the
power is switched on.
BFC (Beat Frequency Control) Switch
If you hear a beat while listening to an
MW/LW broadcast with your car stereo,
change the BFC switch using a small
standard tip screwdriver.
LPF (Low-Pass Filter)/HPF (High-Pass Filter)/BPF (Band-Pass Filter) and
LOW/HIGH Select Switch
Set the LPF/HPF/BPF and LOW/HIGH select switch as follows according to the type of
speaker that is connected to the speaker output connector and the car stereo system:
LPF/HPF/BPF
Audio frequency range
Speaker
Remarks
and LOW/HIGH
to be output
Type
Select Switch
LPF
HIGH
*1 -- 3k to 9k Hz
Mid
Connect a mid range speaker.
LOW
*1 -- 40 to 120 Hz
Subwoofer
Connect a subwoofer.
HPF
HIGH
*1 *2 3k to 9k Hz --
Tweeter*3
Connect a tweeter.
LOW
*1 40 to 120 Hz --
Full range
Use if you want to cut the
very low frequency range*1
because it is not necessary for
the speakers you are using.
BPF (for CH A)*4
*1 40 to 120 Hz --
Mid
Connect a mid range speaker.
-- 3k to 9k Hz
OFF
Full range
Full range
*1 See the "Cut Off Frequency Control" section.
*2 With CH A, even if the setting is HPF-HIGH, you can only select the same cut off frequency as with
HPF-LOW (40 to 120 Hz).
*3 If you connect the tweeter directly, you must set the CH B to HPF-HIGH.
*4 Be sure to set the LOW/HIGH select switch to HIGH.

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