Question about Creative Labs Creative SBS450 4.1 Black Speaker System RetailFree UPS Ground Shipping Computer Speakers

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Powered subwoofer hum

After a lightning strike my powered sub started 'humming'

Posted by maxime williams on

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Anonymous

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Plz make sure that all your components are on same 110 ac outlet. Ground loop is the most common couse of Humming on sub woofer. try disconnecting one component at a time till hum disappears.

I am 100% its a grounding problem due to the lighting hit.

Posted on Dec 28, 2008

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Anonymous

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HI there,

I have a Sansui Subwoofer and the problem that i am connecting it to the dvd and all the speakers but the sound coming out is very loooooooooowww, what will be the problem

Posted on Feb 22, 2008

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Anonymous

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The input filter capacitor of ur sub may be damaged,the possibility is upto 99%.u can identify the capacitor easily as it will be the the larger capacitor in that board and is located near the power supply entrance.the component costs within a dollar

Posted on Mar 30, 2007

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The subwoofer output on my Kenwood VR-606 has suddenly stopped working. I have tried the "setup" several times, turning the subwoofer off and back on. Also, when I first power up the system, it emits a low...

It sounds like the problem is not with your VR-606. If you hear a hum from the sub, the problem is more likely to be in the sub's built-in power amplifier. However, it is worth resetting the amplifier to factory presets. To do this, unplug the power cable from the mains supply and reconnect whilst holding down the power on/standby key. If the hum persists, connect any powered speaker to the sub-out socket, power on and listen for the hum. If no hum then suspect the powered sub amp. Turn the sub on with no connection to the Kenwood VR-606. If hum persists, the sub has a problem and will need to be replaced or repaired. By the way, you said there is a low frequency hum through the 'speakers' for about 30 mins. Is that all speakers or just the sub? Hope this helps.
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Disconnect the RCA cable at the sub. Is it still humming? NO? Problem is external to it. YES? Internal. Broken ground somewhere.

Recheck all connections making sure to twist the RCA head as you install it so oxides will be worn off.

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Subs don't go to a variety of connections on the amp. Let's stop guessing and stick with the prescribed one.

Register and download the manuals for free at retrevo.com

http://www.retrevo.com/support/Yamaha-YST-SW320-Subwoofers-manual/id/320bh340/t/2/

See page E1 regarding placement and safety.

http://www.retrevo.com/support/Yamaha-DSP-A595-Amps-manual/id/319ag821/t/2/

Page 44 - read about "humming".

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