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i hooked up my amp to my computer through speaker level inputs and my sub makes a humming sound when i hook my sub up to the amp... its in my home running off power from an old computer

2007-02-06 15:57:51 · 5 answers · asked by Anonymous in Cars & Transportation Car Audio

5 answers

If you are grounded, then "lift" the ground. Your power source is "dirty" make sure all moving parts are INOP. I.E. cooling fan.

2007-02-06 17:04:52 · answer #1 · answered by Jungleboy 3 · 0 1

Hum comes from ground loops. Try to Google, sorry, I meant Yahoo Search :-) for "ground loop".
It's not quite clear to me when you write "running off power from an old computer" whether the sub gets power from one PC but signal from another. That's a classic ground loop scenario. If so, then make sure that the power source is as close to the signal source as possible, eg. use the same computer for both power and signal, or at least use the same power outlet for both PC and the Sub. While hum @60 Hz and its harmonics may go unnoticed in other speakers, your sub is built to amplfy that frequency range, so you better learn about them ground loops. BTW, using three-prong power connectors that are actually grounded may help.

2007-02-06 16:07:10 · answer #2 · answered by Andre P 3 · 0 0

You're experiencing 60Hz hum. A ground-loop isolator will cure this problem. They can be found at Circuit City, Best Buy, Radio Shaft, etc. If not included, you'll also need an RCA to 1/8" stereo cable (maybe two) since ground-loop isolator have RCA connections on both ends.

2007-02-07 01:31:17 · answer #3 · answered by Anonymous · 0 0

you maximum probably have an previous receiver. that is time to improve your receiver. This time evaluate searching at a Pioneer or an Onkyo, they're the finest get proper of entry to point receiver contained in the market alongside with being better sturdy. I have given up on Sony products, they don't very last lengthy in any respect. desire this can help you out.

2016-12-03 20:15:06 · answer #4 · answered by ? 4 · 0 0

I'm wondering if you have a microphone connected to the system. That can cause feedback, and you might try going to your sound utility and muting the mic to see if that makes a difference. Hope this helps.

2007-02-06 16:04:17 · answer #5 · answered by Jolly 7 · 0 1

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