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I got an amp and as soon as i put the fuse in it blows even with the deck of all wiring is correct and i hear a thump from the subs when i put the fuse in, the subs work good on a diff amp

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Sounds like the amp is blown. Is it the fuse at the amp that blows? or the one at your battery? disconnect the ground and power wires from the amp and check for continuity between the ground and power on the amp terminals. you should have no continuity, and if you do i would check for a shorted power supply mosfet. try disconnecting all speaker wires, rca's, and remote power and see if it still blows. If it does its a problem in the amp, probably blown mosfets.

Posted on Jul 01, 2009

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I recently installed 4 speakers, a deck, an amp, and subs into my truck. About 8 hours after I installed them the speakers suddenly went down, the subs kept thumping, but the speakers are down.


The speaker wire connected to the amplifier if you used one could have come lose or in the back of the cd deck could have come lose. Just check those basics first to make sure everything is strongly connected and make sure you have the correct gauge wire because if you have something rated to high or too low it might not create a solid link

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I'm having problems with my subs (2 pionner preimer 12 inch subs 350 watt rms)and amp 2000 watt 2 channel(VS3506)the on light is still illumated soild green and the power is on the capactor but when i...


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My car stereo makes a thumping noise through the subs when i turn it on or off,also when i change songs on a cd and if i turn the volume all the way down too.i have tryed changing the wires,subs,amp, what...


You have to be more specific. Subs thump, that is their purpose. You need to be more in depth about the sound, because it sounds like the subs are doing their job by thumping out bass

Oct 10, 2009 | Kenwood Car Audio & Video

1 Answer

The light comes on but little sound comes out


theres a chance you may have blown up the amp. never put a sub that is to strong for the amp because its pushing all of the energy out of the amp to power up the sub, causing the amp to blow a fuse or the channels, on the back there is control of frequency turn everything all the way up to see if you can even get it to thump hard but dont blow your sub if it pops turn down some stuff and check the head unit to where its fading to the front or rear and balance to left or right

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You either have a bad ground from your amp to the vehicle or a problem with the amp. Where is the amp grounded? Do not ground an amp to a seat bolt or side panel on any vehicle. The weld points on the car itself cause issue with ground. Take the ground wire directly thru the bottom panel (floor) Check befor you drill! don't hit a wire/fuel line, etc. That will give you a solid ground. Keep your ground wire length to a minimum. 18" or less, and use the same gauge wire for ground as you do for power. Hope this helps

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Thunping coming from subs when car is turned off.


2 things to try, one. run your RCAs on the opposite side of the car as the positive wire. if you still hear the thumping try changing your RCAs. if you still hear the thumping, try a different anp or head unit. if you still hear the thumping, your subs are blown. best of luck

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It wont hold fuse blow evertime


if the fuses are blowing as soon as it comes on the amp is bad, if the amp is actually playing but popping the fuses after a lil bit of playing make sure your subs are wired to the proper impedence for the amplifier if the amp is pulling too much current due to the subs being wired at too low of a ohm rating for the amp.

May 03, 2009 | AudioBahn A2801T Car Audio Amplifier

1 Answer

Scooter stereo


Hi again,

My apologies, missed the connection. Now I remember, must be really getting old.

Back to your concern, which fuse pls? the 15 amps for the Panasonic or the amp"s fuse.

Incidentally, even if the speaker wires were wired incorrectly, that would not cause the fuse to blow. The only way the fuse would blow is if the unit was connected with the polarity reversed, even just once. Internally, most units have a reverse protection diode and/or regulator that would short circuit itself. Thereafter even if it were wired correctly to the battery, the fuse will always blow.

Looking forward to hearing from you.

Aug 05, 2008 | Panasonic CQ-C8100U CD Player

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