Question about Pioneer GM-7200M Car Audio Amplifier

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Amp is on, Subwoofer works, but no sound.

I have a 800W pioneer amp, model GM-7200M, along with a new 12 inch pioneer subwoofer. I installed them both two days ago and they are brand new. It sounded great and everything worked. Then just recently the subwoofer didn't sound anymore. The subwoofer is ok and the amp light turns on. I don't understand what could have happened. I didn't disconnect it at all since it was installed. I checked to make sure everything was connected, but still no sound from the subwoofer only my speakers that aren't connected to my amp work.

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Here is a short test you can try, remove the rca audio cable from the amp & connect a diskman or toher audio o/p device that you can hook up with the same rca wires, turn on the amp & see if you have sound. you can also remove the speaker wires from the sub & using multi meter read the ohm's of the sub, most subs are 4 ohm. Hope this help locate your problem

Posted on Nov 04, 2006

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Posted on Jan 02, 2017

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Pioneer GM-6200F amp appears to have blown, but fuses are intact


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Amps on woofers are fine just won't hit


your probably making your amp run to low ohms if its a 2 channel amp bridged to one channel you can probably only run it at four ohms

Also seeing as your subs are 2ohm dvc you can't wire them individually to 2ohm and use each channel separately. So i'd recommend buying a 2ohm stable monoblock or running it at four ohms. a 1400 watt amp'll still pound at 4ohms and it'll extend your amp's life span

Aug 29, 2009 | Pioneer GM-7200M Car Audio Amplifier

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Protection mode on my amp


YEA CHECK THE OHMS ON THE SUB TO MAKE SURE THEY MATCH UP TO THE AMP JUS SOUNDS LIKE THE WIRING IS OUT OF PHASE.

Jun 15, 2009 | Pioneer GM-7200M Car Audio Amplifier

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Pioneer GM-7200M power problem


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

Jun 09, 2009 | Pioneer GM-7200M Car Audio Amplifier

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you Amp is overloading and going into protection mode. if it cuts out with the wire u were using first then their would be no need to upgrade the size of ur wire cause that would only be, doubling or trippling the power u are getting threw those wire now. bottom line the 2 subs u are using are obviously to much for the amp. try dropping the OHM's by connection the subs together and runnig just a single positive and negative to the amp! or just get a better amp

Mar 19, 2008 | Pioneer GM-7200M Car Audio Amplifier

1 Answer

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You need to wire your Subs in Series. This way the current that passes through one has to pass through the other. Bridge your amp. and follow the wiring below.

Amp+ to Sub1+
Sub1- to Sub2+
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Nov 22, 2007 | Pioneer GM-7200M Car Audio Amplifier

1 Answer

Need help


It should be better to use the Pioneer GM-7200M Amp with your subs.

For 8 ohm setup hook up this way:
Amp out+ to Sub1 +
Sub1 - to Sub 2 +
Amp out - to Sub2 -

For 2 ohm setup hook up this way:
Amp + to Sub1 +
Sub1 + to Sub2 +
Amp - to Sub1 -
Sub1 - to Sub2 -

Nov 09, 2007 | Kenwood KAC 6201 Car Audio Amplifier

1 Answer

Need help


u should connect at least six 12" subwoofers (preferably 1000W each) to that pioneer amp of yours. Crank it up and enjoy. Your amp shouldn't cut off now. If it does cut off, you should change the fuse on your amp to a higher ampere.

Oct 30, 2007 | Pioneer GM-7200M Car Audio Amplifier

1 Answer

More bass


Run one set of RCA lines from head unit to amps if you only have one set of pre-outs on the head unit, then at the amps, use an electronic crossover to split between the two amps, and this will also allow you to control what frequencies go to which amps/speakers. You should use one amp for the speakers and the higher power amp for the subwoofer. You should not try to connect both to the subwoofer. Use 4gauge cables if possible. If you have more questions, just ask.

Oct 29, 2007 | Pioneer GM-7200M Car Audio Amplifier

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