Question about Bose Companion 3 Series II Multimedia Speaker System (3-Piece) - Graphite/Silver

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Loud hum with static when speakers turned on

My 3 series II worked well for 2 years. Now when turn on the system there is a loud hum with static the volume of which is not reduced by using the volume control. I have tried using a remote power point but it makes no difference. All of the connections are sound. I am using the speakers from an IMac using the earphone jack as directed.

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There is def. a loose connection somewhere in your system. This is a grounding problem within the system if nothing else. Def. a "lazy" connection somewhere.

gurutim

Posted on Mar 21, 2009

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1 Answer

Humming noise


Possibly a bad cable or bad ground or bad outlet?. Easy solution, try a different outlet and see if the hum still exists. Also, make sure your speaker cables are NOT run parallel along with, or close to any power cables, Speaker wires can and will pick up AC "Humm" noise.

Apr 23, 2014 | Edifier Computer Speakers

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Get loud hum from both bose companion II speakers when i disconnect left speaker hum goes away tried most everything else thanks


try swapping the speakers around if the problem still persists either the speaker is faulty
the speakers plug/outlet is usually at the back of the computer you will have to open up the computer to check the lead attached to the rear of the input plug make sure the connection is good
be sure to wear an anti static earth strap before touching anything inside your computer
try cleaning your computer of dust using a fine air blower from a compressor making VERY sure that there is no MOISTURE in the air line specifically around the CPU central processing unit and your sound card dust causes static to build up in a computer causing it to overheat any many other problems
hope this helps

May 23, 2011 | Bose Companion II Computer Speakers

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I have a 2.1 altec lansing speaker system i got 3 years ago. a couple of moths ago they started humming. the humming is now so loud i have to turn the power off when i go to sleep (i can even hear the hum...


If there is a router or you leave your phone near the speakers that is what is most likely causing the problem. Check to see if anything that gives off a wireless signal (eg. microwaves, cell phones, cordless phones) are nearby, and try to see if moving one of those things fixes your problem.

Feb 28, 2011 | Altec Lansing VS2421 2.1 Speakers

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I have the Bose Companion 3 Series II speakers. I ordered them through the Bose website. However, I continuously hear static. Mute, low volume, with music, etc. I hear static noise. The only way to...


Hello,

I have had totally the same problem before, and I have discovered that it is actually because of the electric current running through the speakers when the volume is low or muted.

I am afraid to tell you that the only solution to this problem is to raise the volume, as it is not a malfunction in the speakers but in the electric current running through them.

Good luck.

Dec 16, 2010 | Bose Companion 3 Series II Multimedia...

2 Answers

Older Harman Kardon computer speakers have loud hum


The hum (50 or 60 Hz) is caused by the AC power getting into the entry point of the amplifier. Either the filtering capacitors from the powersource of the speakers have dried up - replace them - or there is a short in the cables.
There is another possibility: if you have kicked the subwoofer  box its transformer might have slipped from its fixings and now is touching the subwoofer speaker frame.
The only way to find which is to open the cases.

Nov 28, 2009 | Harman Kardon HK695 Computer Speakers

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There is a loud hum when volume is on low to high


go to control panel
sound and audio devices
voice
under voice recording clk volume and mute the mic phone...........
or
some how your mic is conflicting with speakers. Keep your mic away from your speakers..

Do reply if this woks

Oct 03, 2009 | Bose Companion II Computer Speakers

1 Answer

Loud hum when Bose Companion 3 Series II speakers are turned on.


I had the same problem for many months. I asked a sound & video professional and he suggested I move the subwoofer away from any power source. I had the subwoofer next to my UPS. Once separated and moved all wiring away from the power supply (about 12") the low bass hum was practically gone.

Jun 28, 2009 | Bose Companion 3 Series II Multimedia...

1 Answer

Hum in speakers


Unplug the minijack from computer to hear if it still hums. If not test speakers at another computer. if it works fine on other computer the sounncard is generating hum noise. Common problem is usually the earthing cable inside the minjack that is touching L or R speakerwire due to bending of cable and breaking off insulation. If youre up to it cut off minijack if its moulde and resolder a new one on.

Oct 26, 2008 | Harman Kardon SoundSticks II Computer...

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