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My KLH speaker is making a loud hum, the model is 7201, I have stripped the wire that is connected on the back of the speaker and made a new connection but it is still making a loud hum. Can you help me

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6 Suggested Answers

6ya6ya
  • 2 Answers

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Posted on Jan 02, 2017

SOURCE: Humming Sound

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Posted on May 21, 2008

  • 5 Answers

SOURCE: loud humming buzzing sound coming from subwoofer

make sure you have the speaker connection right if you do then it is a ground problem try plugging it in a different outlet

Posted on Dec 16, 2008

  • 10 Answers

SOURCE: Loud humming sound from subwoofer

just try leaving it unplugged for a while thats what i did and it fixed it

Posted on Jul 28, 2009

  • 136 Answers

SOURCE: connecting subwoofer to kac-7201 kenwood amp

from your sub connect one short piece of cable from + on one side to - on the other side using the same diameter cable as you are running to the sub from amp . this will leave you with + and - on opposite sides of speaker these will then run to the amp +to+ and - to- on the mono side of connetor which is one left + and one - right and the amp switched to bridged

Posted on Sep 03, 2009

tech240
  • 169 Answers

SOURCE: bare wire sub to single RCA jack receiver

Yes you can modify RCA cables to make bare wire tails.
If the unit has a sub o/p then you just connect up your sub bass unit to whatever the amp needs.

An RCA cable is 2 wire which is all you would normally need for sub bass speaker level signal.
It may be a good idea to eventually upgrade the wire size if you want really good sub bass as lower frequencies draw more current and so require more copper.

Please let me know if this any help, thanks for using FixYa.



Posted on Sep 20, 2009

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4 Answers

Klh powered subwoofer model ASW10-120B... when you plug in to power... it makes a loud buzzing/humming noise


I would check the caps on the power supply. They are rather large electrolytic capacitors that will look like they burst and/or leaking. When these die, the caps ground and the sub will make a loud buzzing sound. If you are handy with a soldering iron you can replace them yourself. Replace them with the same voltage or a little bigger and same with the size.

If the cap. says 16v 4700pF on it, for example, a 20v 5300pF or a 16v 6200mF cap. will work for this application.

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1 Answer

My KLH powered sub maks e a humming sound when i plug it in but it only hums when the speaker is hooked up i tried others but did the same eventually speaker started smoking would wrong fuse do that


Wrap a wire around the outside Metal of your rca jack in back of your radio and ground the other end of that wire to the back of your radio and the noise goes away

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Hum usually indicates a power supply problem. If it has an internal supply you will need someone to check it's producing clean DC. Alternatively if you do open it (beware risk of shock!!) initially visually check condition of /replace any bulging electrolytic capacitors.

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I have a KLH 700watt home theater reciever that wont stay on!!


Sounds like it is overheating. Try one or all of the following:

Remove anything that may be stored on top of it. Unblock the vents.

Connect speakers with a higher sensitivity rating.

Move it to an area where it has more airflow around it, ie; not in a closet or cabinet.

Disable any bass-boost and equalization, or tone controls.

Set any crossover settings for any subwoofer you may have connected, to a higher frequency.

Decrease your listening volume.

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Sounds like the hum might be mains hum caused by the failure of the power supply capacitor(s) in the sub. It/they will be the largest on the pc board. You will find all the details (needed to replace it) on them. If you find more than one replace both.

Dec 10, 2009 | Audio Players & Recorders

2 Answers

It is a klh powered subwoofer, which buzzes when plugged in, even though the power switch is set to "off"


Sounds like the grounds are screwed up. Try using a grounded wire for the subwoofer input. If that doesn't work, it sounds like something is internally screwed up, like the power supply doesn't fully power down. I guess besides buying a new amp, just connect it to a power strip where the switch is accesable and shut the sub off with the power supply.

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check and make sure the ristors are not rusted

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Loud humming buzzing sound coming from subwoofer


make sure you have the speaker connection right if you do then it is a ground problem try plugging it in a different outlet

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Loud humming sound from subwoofer


just try leaving it unplugged for a while thats what i did and it fixed it

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