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Hi I had a Pioneer Class D Mono Amp GM-D8400M and a Pioneer enclosed 1200W D/V 4ohm-TSW307D4 installed by car audio company. After 4 days I took it back to them cause it was not working and they **** that I blew the amp & sub up. They claim that I had been driving it too hard and would not be covered by warranty. This is not true, I had not been playing my music loud and I had not made any adjustments to the amp. Can you plese give me advice as to what to do?

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The amp sub needs to be replaced, since you cant get it warranty repaired you have to buy another amp or fix the old one.

Posted on Apr 19, 2008

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Power light flashing


This means it is blown. Whenever the power light flashes on any amp it is blown or something else is wrong with it. Most likely its blown. You can blow am amp by hooking it up to a powerful sub and blaring it, or just overheating it. Hope this helps. This can usually be fixed as well

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W__How do i wire two pioneer GM-D9500F amps i only have two rca outputs on head unit one sub output that is being used with a D class mono amp for sub the other rca to one pioneer GM-D9500F amp but i have...


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How do you rest a pioneer GM-D8400M amp


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Ihave a gm-d84004m 1200 watt amp whatsize amp wires should i use


if you are talking about the power and groung use atleast 4 gauge for the subs i usually use 10-12 gauge

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2 Answers

I have a pioneer gm-d8400m the amp isnt working


flashing light could mean a few different things. 1- constant power may not be there. check with a test light or multimeter. should read around 12 volts. it would be a good idea to check all the power and ground leads. make sure u have a good ground. 2- bad sub. im assuming sub since its a monoblock amp. you can meter the subs. make sure the total ohm load is no less than 2 ohms. any lower the amp will go into protect mode. 3- bad amp. power supply may be bad. the newer pioneer amps are full of protection circuits. ive been a professional installer for a shop about 8 years and we sell pioneer. hope it helps.

Dec 25, 2009 | Car Audio & Video

1 Answer

I have 2 dvc 4 ohm alpine type r 15's and 2 svc american bass


Hi mate very nice amp you got there here is the specs for it



Model: MA Audio HK401SX
Hard Kore Series 1800 Watt 1 Channel High Performance Class X Car Amplifier
1 x 1800W RMS @ 0.5 Ohm Mono
1 x 1200W RMS @ 1 Ohm Mono
1 x 650W RMS @ 2 Ohm Mono
1 x 500W RMS @ 4 Ohm Mono
Fully Unregulated MOSFET Power Supply
2 Ohm Stable @ Mono
1 Ohm Stable @ Mono
0.5 Ohm Stable @ Mono

if you have 2 12s just bridge them and you will have 650wrms at 2ohm running to them or one sub at 4 ohm 500w rms ps they should pump iam running 2 12s with just 360rms at 2ohm and they do the job good luck


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1 Answer

NO REMOTE TERMINAL ON PIONEER GM1200 AMP


does it function properly with just the power and the ground?If so try using a ordinary fuse breaker(switchable on/off) and mount it in the cabin of the vehicle where you have easy access to it and can shut it off and turn it on when you need to- Its not necessary to have the remote lead connected to it if it functions well without it.

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1 Answer

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It can be many things it possible the amp cannot handle the 4 ohm load and simply goes into power protection mode. Also make sure your using the correct gage wire to run power from your battery to the amp to thin and it wont have enough power to perform.

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sent it to service center because the problem is inside the amp -sometimes electronics component failed by heat or bad ventilation or poor design work

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1 Answer

Can I Add two 12" subs and 2 pairs of 6"x9" speakers to my amplifier


you could try to wire the subs in a series which all positives are connected in a line from amp to pos of sub to pos of other sub , same for the neg.
heres sum extra reading materials:
http://www.crutchfield.com/ISEO-rgbtcspd/learningcenter/car/subwoofers_wiring.html

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