Question about Infinity BU-80 Speaker

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Infinity BU-80 with a blown capacitor on the board. Anywhere I can buy a new board?

Posted by Anonymous on

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Posted on Jan 02, 2017

  • 153 Answers

SOURCE: sub goes full blown loud when plugged in to wall

It sounds like a power supply failure. It needs to go to a repair shop.

Posted on May 05, 2009

canwoodjc
  • 3301 Answers

SOURCE: Bought new Infinity 8" speaker

hook them up and play something,, the speaker should bounce "out" on bass sounds, if it pulls "in" switch the wires

Posted on May 04, 2011

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2 Answers

Bought new Infinity 8" speaker


hook them up and play something,, the speaker should bounce "out" on bass sounds, if it pulls "in" switch the wires

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WHAT FUSE IS USED IN THIS SUB


The fuse is external, mounted on the back. I think it also holds a spare fuse. Rating is marked next to the fuse holder.

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No sound coming from my Infinity BU2 subwoofer. Powers up, light comes on, relay clicks, and nothing.


I suspect that whatever semiconductor does all the amplifaction has departed this life. If you check the PC board it might point to a burnt out part or a blown one. If not look at anything big or with a heatsink on it.

Feb 01, 2010 | Infinity BU-2 Speaker

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Sub goes full blown loud when plugged in to wall


It sounds like a power supply failure. It needs to go to a repair shop.

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SUB WOOFER PROBLEMS


design u r aucostics properly

Jan 10, 2009 | Infinity BU-80 Speaker

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Infinity Entra Sub 150 no sound or power


I had the same problem. When I opened it up, the fuse was blown, and it was a pain to find the fuse it needs (3 Amp, 250 V slow-blow fuse, 5x20 mm). Also, the 2 large electrolytics (big purple things near the amp) and one small capacitor were all blown. For 4 fuses, bought seperately from, and the 2 electrolytics and 1 capacitor, it cost about $20, plus almost 20 more in shipping, which still isnt bad considering the original price of the sub. However, the tricky part is that you have to know how to use a soldering iron to take out the old components and put in the new ones.

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Have a BU2 subwoofer no sound


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