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Buzzing on my Goodmans GHC-50 home cinema

There has been a buzz on mainly the sub woofer but if you turn up the sound you can hear a feint buzz on the speakers

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6 Suggested Answers

  • 4234 Answers

SOURCE: 100watt sub

There is a problem wwith teh power supply or the amp section. Does the noise remain constant or does it vary in volume? The sub should have a level control, does the noise vary with that control?

Posted on Mar 20, 2008

  • 124 Answers

SOURCE: No bass...

One of a few things.

The fuse inside the amplifier section is blown.
The amplifier has died
The speaker is dead.

Best to return to the place you purchased the unit or contact Velodyne for service.

Posted on Jan 04, 2009

  • 75 Answers

SOURCE: sub woofer buzzes all the time

ur sub wont buzz due to bad speaker. either u have a faulty preamp or power amp. yes it can be repaired and will not cost much. if it is loud and annoying, get it repaired. sometimes subs emit low hum when powered up. this is the way the are desinged.

Posted on Apr 13, 2010

Testimonial: "Thanks, That's what I needed to know, so now I'll look for whats buzzing and not new speakers"

  • 1 Answer

SOURCE: Athena AS-P4100 Sub Woofer - blown main fuse - who repairs these?

Sorry I can't solve your problem. I think the main fuse on mine is blown too. Can you tell me where it is located?

Posted on Sep 01, 2010

  • 2 Answers

SOURCE: my kef psw 2150 sub

is probably faulty capacitors
you should check out this link:

Posted on Dec 05, 2010

  • 14 Answers

SOURCE: The amp on my kef

Ok so no guarantees this will work, but it did for me and I knows it's very late but hopefully it will help someone else with a similar problem.

I had the same problem and as clmrt5000 said a very long time ago there could be an issue with a ground loop, although this is likely to give a high pitched buzzing sound.

This can easily be fixed by adding a switch to disconnect the mains earth from the back plate, or you can just unscrew the earth and tape it up, this fixed my ground loop, (some models already have a ground lift switch)

As for the "boiling" sound I also got a saw tooth wave sound (like a strange squeak or beep that changed frequency) this is caused by faulty components, and thanks to Frank Johnson ( who suggested that you can simply and easily replace 3 capacitors on the main amplifier board (c58 - 47uF 63v or 100v) + (c52 & c53 - 220uF 25v) but stand them away from the board on the length of the capacitor leads to prevent them from absorbing heat from surrounding hot components (with heat shrink tubing to prevent shorting)

Now my sub works as good as new, apparently these 3 capacitors can cause all kinds of problems it's a common fault, so if you are handy with a soldering iron, or know someone who is you could save yourself a lot of money by repairing you faulty KEF sub.

p.s. if you have ANY of the KEF PSW subwoofers they all have similar issues, you can find a guide to fixing them at the link above, Frank is a brilliant and very helpful man.

Posted on Aug 28, 2011

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Loud buzzing sound

Amp is shot. Will need to be replaced. Not an uncommon complaint on this model.

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check the cable , might be it burned bcoz of the voltage fluctations.
If not check the transformer if its buzzing or not. if not- buzzing replace the power cord

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MX6050D Subwoofer Issues

Hello, welcome to Fixya!

Fault is either from the main system or the sub-woofer itself.

You need to test both unit in order to detect which of the two is giving the fault, so that you can concentrate on the faulty unit.

Test the woofer with a AA battery or any other battery. Put your ears close to the woofer and observe if you will hear any sound. If the woofer makes sound, then it means the woofer is working, but if it doesn't make sound, then it means the woofer is defective. Or you can disconnect one of the working speakers and connect the woofer to that part. If there is no sound, then obviously, the woofer is defective.

If the woofer seem to be working, then the unit needs to be tested also.

Connect one of the working speakers to the sub-woofer's section of the main unit. If the speaker doesn't bring out sound, check the system's menu settings, check the volume and make sure the sub-woofer volume is raised to the highest level and not on mute. ( Note that most Theater systems has separate volumes for each speakers). If the volume is raised to the highest level and there is still not sound from the woofer part, then it means the woofer channel has burnt. It could be a fuse or a defective channel. At this point, I think you need help from a repairman.

I hope the above is clear.


Nov 17, 2011 | Speakers & Subwoofers

1 Answer

So I've kept my Studiophile BX5a Deluxe monitors in good shape, but I noticed that every sound I tried to generate via Ableton Live on my Mac, a buzzing sound would accompany the sound. For example, I...

See if you can isolate the buzz to one woofer or tweeter. If a woofer, gently and evenly move the cone in and release to feel / listen for scraping. If you notice any scraping, the voice coil could be shot - a small bobbin of copper wire may have deformed andis now rubbing. Occasionally if a speaker is dropped, the magnet can shift, which will then rub the coil.

In any case, if there is coil rub that causes the buzz, you need to replace that driver.

If the buzz is electronic in nature, assuming these are the powered versions, a qualified service tech will have to diagnose and repair.

Jan 06, 2011 | M-Audio BX5a Speaker

1 Answer

My JBL subwoofer just buzzes when I turn it on. It doesnt seem to change anything if I plug it into a powerstrip or the wall. It also doesnt seem to matter what setting it is on, all that changes is the...

It is possible that the amplifier within the unit is faulty; The best you can do is to put the woofer ON for about 12 hours so that if there is any chance of any capacitors being faulty or has electrlytic drying.
if this wont solve the unit must be opened to check the amplifier. Possible failure of the input source selector as the woofer is humming.

Oct 27, 2010 | JBL PB12 Subwoofer

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Subwoofer continuous buzz/signal noise

I just bought mine yesterday and have the same problem... did you find a solution (other than throwing it out the window)?

Nov 18, 2009 | Bose Acoustimass 15 System

1 Answer

Subwoofer noise

You didn't say is your sub active or passive.If its active first check signal cables from theater system,power line of the sub, it has to be the same phase as the system.If its passive take a voltmeter disconnect the sub from the system and measure for DC voltage on the SUB output on the system when its OFF.If DC voltage is present your amp is damaged.It can also be that the preamp circuit for the sub doesn't mute the input when unit is on stand by and you hear frequency of your power supply (50-60Hz) on the sub

Mar 09, 2008 | Speakers & Subwoofers

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Buzzing Cerwin Vega LS-12 Subwoofer

Generally, a buzz from your sound equipment indicates some sort of nearby EMI. The normal culprits and.or possible fixes that I've found are:

- Remove any other electronic devices plugged into the same outlet as your subwoofer

- If the woofer is on a power strip/surge protector, remove it and plug directly into the wall

- If there are any nearby wireless devices (cordless phiones, WiFi eqiupment), disconnect/power down them

- Try connecting different speaker wire between the woofer & the receiver

- Try turning off all other eletronic equipment with the exception of your receiver

Let me know if any of these help and good luck!

Nov 27, 2007 | Speakers & Subwoofers

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