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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

Posted by trevorsilk on

  • sherifoo Dec 16, 2008

    I have a buzzing on the sub woofer which gets louder when I turn it up. I have disconnected all the speakers and tried the box in a different location but it still keeps buzzing. Can any one help? My local electrical shop is not interested.

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5 Related Answers

ABRsvcs

  • 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?
Dan

Posted on Mar 20, 2008

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Anonymous

  • 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

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johex

John Muana

  • 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"

Anonymous

  • 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

Anonymous

  • 2 Answers

SOURCE: my kef psw 2150 sub

is probably faulty capacitors
you should check out this link: http://lug.demon.co.uk/kefrepair/?cat=1

Posted on Dec 05, 2010

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1 Answer

Subwoofer is not playing


It is hard to say. The sub-woofer has its own amplifier, although it is supplied the sound data from the main amplifier. It could have a problem with the battery power circuit (Sub-Woofer Amplifier Connector Pin 6, LIGHT GREEN/VIOLET) or it could have a problem with the GROUND circuit (Pin 2, BLACK/LIGHT GREEN) Or it could possibly not be receiving the signal from the main amplifier (Pin 7, BROWN/ORANGE "+"), (Pin 8, RED/BLACK "-"). Or it could be that either the sub-woofer speaker is blown, or the sub-woofer amplifier is defective.
There is also a "High Audio Mute" circuit that connects between the main amplifier and the sub-woofer amplifier.

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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.

Regards.

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1 Answer

My sub woofer stopped working, please tell me where it is located so i can check the speaker and also check if power is going to it thank you very much joe


The JBL premium sound system has a large woofer in the bottom of each door, a small mid-range speaker next to the woofer, & tweeters next to the front door windows in the corner, & two full-range speakers near the rear seats. The woofer (not sub-woofer) handles all the low end. You can test the woofer by turning the BASS to max and TREBLE to minimum (make sure balance and fader are centered) and put your ear next to each woofer.
The woofer is usually the 1st speaker to have problems after 10 years or so. The outer edge of the woofer starts to degrade. You will usually hear a rattling sound out of the woofer when this happens.
NOTE: If no sound at all out of the woofer (tweeters are OK), you might take your car into a car stereo shop. They can put a speaker on the wires connected to the speaker and make sure your problem is not the radio.
PROBLEM: You can still hear sound out of the woofers but it is distorted
SOLUTION 1: Go to a car audio shop and have them install new woofers. These may cost $30+ each but the dealer cost is over $200 for each woofer (crazy).
SOLUTION 2: More involved but very cost effective. If you or a friend is handy, you can go to www.speakerworks.com and order a new set of speaker outer rings (on the site they are called speaker SURROUND) that will replace the damaged outer rings on the woofers (replace on both woofers). They really work great and your speakers should last for many more years.
Hope this helps.

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There clearly is a fault in the sub's amp section. It's probably the main part that does most of the work. It will need to be replaced.

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Select Start > (right click) My Computer > Manage
In the Management window select > Device Manager
Next to Sound, Video and Game Controllers click the + sign
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