When Recoton owned Acoustic Research they used a amp based on Sunfire technology to power the subwoofer. No one seems willing or able to effect repairs on them. Is there anyone, anywhere, that I go to for support on these amps? If not, is there a replacement solution available?
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You can't just slap a sub onto a receiver and have it work optimally (if at all). The receiver must typically be configured to know it has a sub, then bass managment and sharing decisions must be made, then crossover frequency choices and levels adjusted to match it all up.
using the LFE input will give you cleaner less distorted bass. You must have a sub out on your receiver or pre-amp. it will give you greater control over the bass output of your system. If you only have one sub-out on your receiver simpley run a 10ft rca from the sub-out of reciever to the rca input of either speaker than use the rca out of 1st speaker to the rca input of second speaker. check to see if you have control of the level of your sub-out on your reciever. adjust the 30hz boost on rear of speakers. now you will have bass that most people only dream of having.
Well, so far so good. I reinstalled the newly repaired amp and fired it up and so far, so good. Ran it through about an hour of fairly intense break-in tracks and then ran it through about 2 dozen power up and down cycles to try to get it to fail (better now than a month from now and have to fight them on backing it up).
I have the same problem with the smaller AR 112PS speaker 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...
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...http://www.partsexpress.com/pe/showdetl.cfm?DID=7&PartNumber=300-805
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.
I can't find any documentation for your amp; it was made when Jensen was owned by Recoton, and they're no longer in business. With any 4-channel amp, you can't bridge all four channels into a single channel. What you can do, if you're connecting it to a single sub, is to bridge two of the channels into one channel and leave the other two channels unused.
It doesn't usually matter which two channels you pick, but some 4-channel amps designate channels 3 and 4 (or rear channels) for the subwoofer. Whichever ones you use should have a "LPF" or "LP" crossover setting available.