Question about Infinity BU-120 Subwoofer
Sub-woofer powered on, no other connections except power cord - 160w output - 120v - replaced the fuse, still making thumping sound.
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Posted on Jan 02, 2017
The woofers on my 3.5c stopped working, but with mine the light was off. I unplugged it and left it for about 24 hours and then plugged it back in and it worked. No idea why. It's happened twice and each time takes at least 12 hours or a day or so before it'll work again, just unplugging it for an hour won't do it.
It seems like both times the problem started when the speaker got unplugged without it being shutoff first, but I can't confirm.
But if your light is still on it's probably a different problem. With my 4.1t towers when the light was on but there was still no sound it equated to numerous fried amp components which cost about $150 for repair.
Posted on Apr 10, 2008
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.
Posted on Mar 23, 2009
In general higher speaker impedance is safer than lower impedance for the amp. Don't expect anything impressive re: audio output from a passive (unpowered) sub if your HTS says it pushes only 25 watts. Without frequency bandwidth and distortion noted the spec is virtually useless as a comparison.
The BU-1 is a powered sub that accepts either RCA Line Level or HIGH LEVEL amplifier power. If you use the latter, impedance is a non-issue because the input feeds the BU-1's internal amp, not the speaker directly. You should be okay.
Perhaps if we knew some specifics about the HTS we could do more than guess.
Posted on Jul 21, 2010
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