Question about Harman Kardon HK19.5 Computer Speakers

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Primary speaker (one with volume control) has constant loud hum. What's wrong?

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Line is grounded, check the wire connector there might have been a short on it!

Posted on Nov 10, 2010

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I have the Klipsch Sub-10 Subwoofer, and it no longer plays music. Now it hums (vibrates constant) and corresponds (louder or softer) with volume control. Light is home but no one home situation. V


Does the subwoofer have the same hum when the input cables have been unplugged? Many input cables use very fine conductors, which often fail. A bad cable will often introduce a hum and prevent a signal from getting through. If the noise is still present without the input cable(s) connected, then repair options are limited. No schematics are available. There's a daughterboard that has been available, but its failure usually causes the system to die (short-circuit). The cost to repair the amplifier may be close to the cost to replace the entire sub.

Sep 14, 2014 | Klipsch Synergy Sub-10 Subwoofer Speaker

1 Answer

Loud HUM from 1963 Wurlitzer 2710 when plugged in


If you observed a vacuum tube with the symptoms you describe, it requires replacement but there may be other failed components as well.

Dec 27, 2013 | Audio Players & Recorders

1 Answer

Hi, I have a pair of Polk RT1000i powered towers and one now makes a constant loud humming or buzzing sound. It is not hooked up to the receiver. It does it as soon as its pluged into the wall. Any...


the volume on the speakers are too high. try to put make the speakers the master volume(whatever device you plug in into your speakers make that device's volume go all the way up and then adjust the volume on the speakers to what ever volume you desire.had the same problem with my computer speakers

Jan 16, 2010 | Polk Audio RT1000I Speaker

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

1 Answer

Older Harman Kardon computer speakers have loud hum


Most probably it's an internal problem with their power supply (a capacitor with broken soldering).
It can be quite easily repaired by a person knowing which side of a soldering iron to grip ;) If you have a friend that's familiar with electronics, you can ask to take a look. If you don't, the repair shop will most probably want a flat charge, which will not be feasible.

Nov 28, 2009 | Audio Players & Recorders

2 Answers

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

2 Answers

LOUD BUZZING/HUMMING SOUND- CAN HEAR OVER AUDIO


have someone check speaker ground to the TV chassis. Your speakers are picking up reverb from the Video Signal.

Aug 19, 2009 | Vizio L37 Television

1 Answer

They are makeing a constant sharp noise a loud high pitched hum if you will


Right-click on the speaker icon in the lower right of your screen and choose Open Volume Control and check all volume levels (make sure they are not set to high). If this doesnt work then when you right-click, choose Adjust Audio Properties and search around for volume controls (maybe try the Speaker Volume button).

Aug 04, 2009 | Audio Players & Recorders

1 Answer

Loud hum with static when speakers turned on


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

Mar 10, 2009 | Bose Companion 3 Series II Multimedia...

1 Answer

Gemsound power speaker pxa105


First,
Disconnect any input cables from the amp. Turn down the volume controls and disconnect the speakers. Power back on. If you still blow fuses with nothing hooked up, have the amp fixed.
If the fuse holds, shut down and connect the speakers, leaving the volume controls down. Power up and see if your fuse holds. If you have hum, an output transistor is most likely shorted. If you have no noise, SLOWLY turn up the volume controls and listen for the hum. If all is quiet, turn down the volume controls and connect your input cables and turn the volume back up. Noise? check your cables!
Mister Phil

Apr 07, 2008 | NAD C350 2-Channel Amplifier

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