Question about Acoustic Research S112PS Subwoofer

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Sub quit working, where do I find new board/amp/crossover panel

Sub stopped working, and I've tried to get audio several different ways, and come to the conclusion that the board is bad, or something on the board is bad. It powers up and I can bypass everything and go directly to the sub which works fine by itself but no amp/crossover. Any Idea where i can get parts.

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Re: sub quit working, where do I find new...

I have the same problem with mine and since Acoustic Research went out of business, I too have been looking for a solution. I may have found an alternative to throwing away this really nice speaker. I found a company on the web that appears to sell an amp that may fit nicely into this speaker enclosure for $99.00. Check it out...

UPDATE Feb-16-2016: This Amp is still going strong since 2012 when I replaced it. The price has gone up to 139.00, but may still be worth it to replace a bad one given the cost of Sub's today.

Posted on Feb 28, 2008

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Infinity BU- 80 sub sounds over driven or blowen

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The TX has speaker setup and test tones for setting the balance and distance with test tones and proving the hardware works. If that all works the difference is probably external or settings.

What is different between the music source(s) audio and the HD movie source(s) audio? Ask yourself, how would a sub make high frequencies go missing? It can't.

Your other speakers are responsible for conveying the high frequencies.

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I was given a Cerwin Vega LW12 by a friend. It works fine for some music at any volume, but with certain types it has a popping coming out, even at low volumes. Switched speakers and still happens....

If you are certain that the problem is not with the speaker(s) the problem then sounds like an issue before the amp.

Did your friend have this issue? If yes, the problem is with the built in amp/crossover. If no, there is some kind of problem in your location.

The amp will not produce the popping sound even if the the amp has a problem electronically. The problem could be improper voltage, line noise, wire resistance or a grounding issue. The first two would be eliminated by using a line conditiner with a built in surge protector. The resistance and grounding issues would be associated with the wire connecting the sub to your electronics. It could be simply the cable connecting the sub has an issue, try swapping it with one that you know works fine. Are you using in wall wiring? Try using like stated above, a short known good patch cable. Sometimes the wire of choice during a installation will not work for that amp. Try taking that in wall cable out of the loop. I have seen just this problem in the past due to the type of wire used. A low cost way to eliminate the voltage issues is to try a different source of electricity by taking the sub to a friends house and see if you can reproduce the problem there.


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How do i connect my pv2600amp to my peavey subs and top speakers, i have the leads but what do i do?

Line outs Left and Right from mixer to power amp Left and Right inputs,
Power amp outs to Subs(if they have passive crossovers built in check specs on subs).
From Subs then to Main spkrs. Make sure power amp is set in stereo mode using this way.

Alternative: You will need at least a 2-way stereo crossover unit inline after mixer and before power amps if the subs don't have a built in passive crossover. Most of them do have passive crossovers in the subs these days. Then separate amps or one channel would drive the subs and the other the main speakers. True stereo would require at least a 2 way crossover and two stereo power amps if hooking them up this way.

There is another option as is common with many sub setups. Send the signal to the mains using L/R outputs from mixer and a separate Mono output to the subs only. Putting only bass/kick and low frequency outputs in this send would help too.

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There is a great article on Polk Audio website regarding Home Theater setup. You can use it as reference and tweak it to your taste.

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Rita's Vintage Audio Repair is a Bob Carver Company & can repairs & updates Subs at a reasonable cost try calling them.

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