Amp gets to hot to touch

[Diaz]

Hey guys I dont know much about car audio systems, I installed a 2ch sony xplod 1000w amp with 4 gauge cable for ground and positive to power my Powerbass sub. I tapped in the rear speaker with a adjustable LOC. I bridged the sub output. The Amp gets really hot after a few minutes, and if i turn my volume up to high the sub cuts off and i have to lower the volume all the way for it to come back on. Any ideas why my amp gets so hot and why it cuts off?

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[bradl79 10+ year member]

check ur gains, do u have an oscope or ddm

 

[Diaz]

I dont know what you mean, but i can check if you tell me how //content.invisioncic.com/y282845/emoticons/smile.gif.1ebc41e1811405b213edfc4622c41e27.gif

 

[bradl79 10+ year member]

did u have someone install ur amp or did u do it urself?

 

[MakkMar10]

Youtube, setting amp gains....u need to match the signal coming from ur HU. Failing to do so will result in blown amps an burnt subs

 

[Rich B 5,000+ posts]

You need to post what sub you have and what ohms its voicecoils are.

 

[Diaz]

I installed it myself. Could the bridge be a problem?

 

[bradl79 10+ year member]

no, i have mine bridged, and i don't thin that would be it, u may just have ur gains set to high, that is what makes the amp hot, do u have bass boost on too, what is ur amp and sub?

 

[Rich B 5,000+ posts]

I installed it myself. Could the bridge be a problem?

That depends on the sub.

If the ohm load is too low it will cause the amp to get hot, and probably damage it.

 

[Diaz]

The Sub I have is a 12' dual 4-ohm Power Bass 300w rms- 600w max.

 

[dragon.breath 10+ year member]

i think i see your problem. your amplifier is only stable at 4 ohms or higher when bridged. a dual 4 ohm subwoofer can be wired at 2 ohms mono, which your amp can't handle. look at the diagrams in the link below and wire the subwoofer in series to 8 ohms mono.

Subwoofer Wiring Diagrams, One 4 ohm Dual Voice Coil (DVC) Speaker

 

[Diaz]

Thanks , my amp was wired for a 2 ohms, now it is 8 ohms and does heat up as much. But when I raise the volume to high the sub stops hitting and I have to lower the volume for it to start working again, any ideas??

 

[argenis69 10+ year member]

Most likely your ohm load is too low for your amplifier. Also check on YouTube and learn how to set your gains, because I think your gains are too high.

 

[bradl79 10+ year member]

u may have to go with a 2 ohm dvc sub, also u may want to go to walmart and pick up a digital multimeter to set ur gains properly, and google how to set them. its very easy, and the ddm is pretty inexpensive. just so u don't clip