Question about KLH GFX-550 Speaker

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Dead KLH GFX-550 powered sub woofer.

When audio systemis on, everything works except the sub woofer. With it in ON, no sound at all

Posted by Anonymous on

4 Suggested Answers

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  • 2 Answers

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Posted on Jan 02, 2017

Grubhead
  • 5017 Answers

SOURCE: klh subwoofer asw12 200 powers on but no sound,

There's an amp inside the unit, most likely the semicondutor that does all the work has failed in it.

Posted on Feb 01, 2010

  • 3 Answers

SOURCE: sub woofer produces a very loud low tone

I have the same problem. JavaMan is right. In one case someone even reported the bridge rectifier had failed. I have mine apart right now, trying to decide whether to attempt to fix it. The power board has been warped a little from the heat, and I can no longer read the color bands correctly on the power resistors to try to change them. Thanks for the schematics, JavaMan; unfortunately they don't match my boards, so I'm out of luck, and can't find anything else.

The components aren't expensive, so you might be able to take it someplace and have it repaired (or have a friend do it) fairly cheaply if the schematics here match your sub. I think I'm gonna chuck mine, which I hate to do since the speaker and cabinet are still good. I've just wasted too much time on it, and already have another in its place.

Posted on Feb 07, 2010

dunnbiker
  • 8546 Answers

SOURCE: KLH ASW8-100b Sub woofer. I

Some specific model numbers might lead us to specific manuals and specific instructions.

Depends on your source and its amplifer complement. Some can drive a subwoofer directly while others just produce a Line Level subwoofer output for use by a separate amp feeding a subwoofer or self-amplified sub.

The set-up of the source to produce a subwoofer output is totally dependent on its design. Generally, you have to 1) tell it you have a sub, 2) define how bass will be routed or shared among your various speakers accordingto their bass-handling capacities, 3) using test tones, set the relative ludness and crossover settings so you have a uniform sound field.


To find a manual, maybe run it by the manufacturer

Posted on Mar 17, 2011

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Trying to hook up a KLH sub woofer, S100ETH, PSW8-100 to a VCR reciever. Reciever has sub woofer connection but does not works on the KLH sub woofer. What is the problem ?


I suggest you go over your receiver set-up instructions. See if you need to set the receiver to acknolwedge the addition of the subwoofer. It should be in your receiver set-up steps. Just as a check, hook up one of your other speakers to the subwoofer lead to see if gets audio signal. I'm guessing the issue is your receiver settings.

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Low level inputs are designed to take signals directly from an amplifier's "sub out" connections. That way the KLH amplifier will use those signals to produce sound and the volume can be balanced between the main amplifier and the sub amplifier using the sub's volume controls. Depending on your amplifier and sub, that is the best way to connect them. However, be careful running the RCA cables since the low levels are more subject to interference. Keep the runs as short as possible and use high quality shielded cables for the interconnects.

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What could be the issue with my sub woofer power?


Many of these SUB amps ended up with Capacitor failures in the Power supply section . Find someone who works on amps or TVs to have a look see.

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Need sub woofer


Any powered sub woofer will work. Just hook it up to the sub pre out with an RCA Cable.

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Power sub woofer is not working on my pioneer vsx-81txv everything is working all the speakers except the power sub connection at the back all i can hear is the hissing sound when i try to connect the sub...


Hissing? How loud? A sub isn't even capable of making high frequency sounds at normal volumes.

The Pioneer manual would tell you how to enable and test the subwoofer output.
Page 17 and the MACCV procedures on Page 33 (auto) or 43 (manual)

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I have a klh 116615p bg11 12 sub and need to know the watagew it doesnt say


This woofer was taken from a KLH Pro-71 Series. These were the top of the KLH line from ~94-99 when it was still a real company and not just a name. The woofer is rated for 5-350 watts at 8 ohms. Source: KLH Pro Series-71 Spec Sheet.

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I have a Fisher RS-909 Surrond Sound amplifier. It has no "sub out" jack. I had the sub-woofer working in the past by wiring it as shown in the manual. The problem is that the system was in...


Alright i had a chance to look over things, this is how you are going to hook up the sub. first we'll be connecting the surround sound unit to the sub woofer.
surround sound unit sub woofer
left front: positive (+) <-----to------------->(+) left speaker level in
negative ( - )<- - -to- - - - - - ->( - ) left speaker level in

right front: positive (+) <-----to------------->(+) right speaker level in
negative ( - )<- - -to- - - - - - >( - ) right speaker level in

now that the surround sound unit is connected to the sub woofer you will need to connect the front surround sound speakers to the sub woofer.
sub woofer front surround sound speaker
left speaker level out (+)<-----to--------> (+) left front speaker
left speaker level out( - ) <- - - to- - - - ->( - ) left front speaker

right speaker level out (+)<-----to--------> (+) right front speaker
right speaker level out( - ) <- - - to- - - ->( - ) right front speaker

Alright now that the wires are all over the place and plugged in
turn everything on and see how it sounds. let me know if everything is working as it should. if you need help with anything else or if something does not seem right please feel free to contact me via e-mail or phone
Mark Woodring

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Denon avr 2802 can't get subwoofer to work all else fine


in the Denon setup under speaker configuration set the sub to LFE+Main

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KLH R5100


in stero mold only 4 speeker will work ftr ftl center sub u need a sound sliter cornet it to the tow frount that what i did

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