Question about Pioneer GM-X372 Car Audio Amplifier

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No sound from the amp

The red light is flickering on the amp and no sound from the speakers i have no manual to refer to please help

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With your multimeter set to DC volts and the black meter lead on the ground terminal of the amp, touch the red lead alternately to the B+ and remote terminals. If the voltage drops below ~11 volts, you need to check the wiring feeding whichever line is dropping too low.


If the voltage remains near or above 12v, disconnect all speaker wires and signal cables from the amp. If it powers up and the light stays on, the wiring needs to be checked. If it still shuts down, the amp likely has at least 1 blown output IC.

Posted on Nov 30, 2007

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Dennis my 1995 lincoln towncar JBL radio quit producing sound the system comes on fine but I get no sound could u help me please, what is the problem?


The Amp in the trunk might have blown,
Town Car Radio Wire Diagram
Car Radio Battery Constant 12v+ Wire: Pink/Light Blue
Car Radio Accessory Switched 12v+ Wire: Yellow/Black
Car Radio Ground Wire: Black/Light Green
Car Radio Illumination Wire: Light Blue/Red
Car Stereo Dimmer Wire: Blue/Red
Car Stereo Antenna Trigger Wire: Blue
Car Stereo Amplifier Location: Trunk
Car Audio Front Speakers Size: 5? x 7? Speakersir?t=modilife-20&l=as2&o=1&a=b00009uhre
Car Audio Front Speakers Location: Doors
Left Front Speaker Positive Wire (+): Orange/Light Green
Left Front Speaker Negative Wire (-): Light Blue/White
Right Front Speaker Positive Wire (+): White/Light Green
Right Front Speaker Negative Wire (-): Dark Green/Orange
Car Audio Rear Speakers Size: 6? x 9? Speakers[img src="http://www.assoc-amazon.com/e/ir?t=modilife-20&l=as2&o=1&a=B00009UHRE" width="1" height="1" border="0" alt="">
Car Audio Rear Speakers Location: Rear Deck
Left Rear Speaker Positive Wire (+): Gray/Light Blue
Left Rear Speaker Negative Wire (-): Tan/Yellow
Right Rear Speaker Positive Wire (+): Orange/Red
Right Rear Speaker Negative Wire (-): Brown/Pink
Check the fuses

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Jul 20, 2014 | 1995 Lincoln Town Car

1 Answer

Bose L1 Speaker Distorting


See this article on the inputs on the Bose L1®.
L1 Model Bose L1 Encyclopedia FAQ Wiki

Set the trim levels so that lights are solid green with occasional flickers of red.

bose-l1-speaker-distorting-20i5lm33axgr24r0utjbv3sd-3-0.png

Mar 15, 2012 | Bose L1 Speaker

1 Answer

Red light keeps flashing


While I cannot find any reference to the flashing red light in the manual, it sounds like the amp is going into a protection mode. I would check the following items:

-Make sure you have the power wires connected to the battery with sufficient size to supply the load. The amplifier is rated for a 30 amp draw, and is fused at 60 amps (2x 30 amp fuses in parallel). I would recommend at least 8 gauge wire as an absolute minimum..and ideally larger than that. To troubleshoot this, try hooking a battery (with fuses inline, of course) with heavy gauge wire directly to the amp. Does the problem go away? If so, the voltage drop due to wire being too small is likely your culprit.

-Make sure your connections are clean. Corrosion at any point can rob your amp of the power it needs for sharp punch and proper operation. Be sure to also check wires at any other connection point. This includes fuse blocks, crimp terminals and at the battery itself. Keep in mind that corrosion does not have to be visible to cause problems. Soldering connections rather than just crimping them (when practical) can help overcome this, as can sealing connections that are exposed to road dirt and grime under the hood.

-Check the impedance of your speakers, and how they are wired. The manual goes into great detail on page 2 about how to properly wire speakers, and what ohm rating each should have. If you are using two 4 ohm speakers wired in parallel on one channel, this is too low impedance for the amp. Either split each 4 ohm speaker onto its own channel or switch to 8 ohm speakers.

While you might check these and still have a problem, hopefully these will eliminate some sources of problems outside of the amplifier itself. Good luck!

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1 Answer

Pioneer GM-7200M power problem


Check your GROUND wire might be touching something and making bad contact.

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1 Answer

Static sound when red light blinks


It might be a loose connection. Do you obly get the crackling when the red light flickers?

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Kenwood KAC-8103D 1000 watt issues


The speaker may have shorted and caused the output transistors in the amp to fail. This is fairly common. It can be repaired.

May 14, 2008 | Kenwood KAC-8103D Car Audio Amplifier

1 Answer

Problem with proscan 19LA25Q


Watching a movie tonight...and slowly there was odd behavior from the screen. No volume at first, then flickering, fragmenting and now, as the others only shows the red power. I have noticed some strange flickering the past 2 weeks or so. I thought it may be the cable, so did not concern myself too much. I believed that was the problem tonight as well. But the screen is definately not responding to the remote or manual button.

Thanks

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1 Answer

Amp not makeing any sound at all


I would suggest first to unplug it completely and plug only the power,ground, and remote and see if you get your beloved green light again.

If this indeed gives you the green light, it means that the amp is protecting itself from a short circuit caused by the speakers, check the speaker cables or the speakers themselves..

if this remains the same, it'll be internally in the amp's circuitry.. unfortunately, it'll be dificult to tell you exactly what failed in it.

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2 Answers

Jbl pb12 subwoofer


yes it can be repaired. but i need more details on this...

Mar 10, 2007 | JBL PB12 Subwoofer

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