Question about Creative Labs I-Trigue 2.1 3300 Computer Speakers

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Humminf sound from subwoofer

As soon as power supply is ON, the humming sound creates but when the power supply is OFF the sound goes ?? when the songs are played, they play finely alongwith this humming sound...any solution??

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Most humming sounds in speakers is due to electrical currents or wifi signals nearby the speakers.

Do you have any electrical cables near the speakers? Do you have any wifi device near the speakers?

If so move them out/away and see if there is any difference.

Posted on Jun 02, 2009

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    Tualiapz Jun 02, 2009

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Hum in audio systems can be caused by a loose wire connection at the terminals, or it can be a grounding issue. Sometimes the hum can be eliminated by isolating the ground terminal on the power plug.
You can place a 3-pin/2-pin adapter on the powerplug... (eliminates the grounding pin. See if that solves your hum..
(it's the kind of plug you use to plug a 3 pin plug into a 2 slot wall plug)

Posted on Jun 02, 2009

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2 Answers

KLH HPS 1100 powered subwoofer. as soon as plugged into AC we get a loud hum from spkr. had unit for 8yrs.


Hum usually indicates a power supply problem. If it has an internal supply you will need someone to check it's producing clean DC. Alternatively if you do open it (beware risk of shock!!) initially visually check condition of /replace any bulging electrolytic capacitors.

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I have a Sony subwoofer for the home entertainment theater. There is a loud hum coming from the subwoofer. The hum persisits even if unplugged from the receiver. Also, I've tried a ground loop isolator...


Hi and welcome to fixya.

To answer your question;
From your description of the problem it sounds like your powered subwoofer has a power supply circuit problem.
It would be either with the large capacitors in the first stage of the supply(most likely) or with the regulation system that supplies +-15 volts to the preamp section.

If you are not familiar with electronic circuits you could still ask a repair shop to verify those large capacitors.

Hope this help and happy holidays.

Dec 06, 2010 | Sony Audio Players & Recorders

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I got a humming sound on my subwoofers, it is connected to my car pioneer tuner. How can I fix this? Is it a defective capacitor on the amp?


U need to install a alternator noise filter in the power supply line, Radio Shack can supply the one you need, it goes by how many Amps of power the system uses.

Mar 26, 2010 | Car Audio & Video

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My home theater speakers make a constant hum whenever my receiver is on. The loudness of the hum changes with the volume control, and goes away entirely when the system is muted. All components are plugged...


jd40,
Sounds like a grounding issue. The first two places to look into is the powered subwoofer and antenna. During your last test, did you leave the FM antenna and subwoofer connected? Many times the hum is directly related to the antenna and/or the subwoofer and to how they are grounded; creating a ground loop through the receivers ground on the outlet. If the antenna is grounded to the dwellings wiring, hum is inevitable and sometime you can get a ground loop hum from how or how & where the subwoofer is grounded. Try taking them completely out of the loop.

Also try taking it further back to the basics, start with the receiver plugged into a known good grounded outlet with no surge or line conditioner in the loop and nothing connected to the receiver, nothing. Use one speaker and different wire to test each speaker output while in tuner and any other mode but phono. With no signal, you will either get nothing (no hum or static) or just static in the tuner mode. No hum is a good sign. Some systems will mute the speakers if no signal is connected to eliminate the static from being produced through the speakers but a ground loop hum will most likely still be produced even in mute. If you get a hum when nothing is connected to the receiver, try looking into getting a better grounded outlet, even maybe to a different dwelling.

-Chris

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Loud hHum from Subwoofer


Sounds like the hum might be mains hum caused by the failure of the power supply capacitor(s) in the sub. It/they will be the largest on the pc board. You will find all the details (needed to replace it) on them. If you find more than one replace both.

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1 Answer

Humming sound when on/off


humming sound when on is usual if the volume is turned up.
humming sound the same when on or off could be transformer plates fluxing.
if loud recommend replacement of power supply.
if ok then recommend unplugging the device after use.

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If you disconnect the signal leads and the hum is away, it's probably a groundloop problem, or your equipment is generating the hum.
If it does not go away, the amps are defective

Sep 23, 2009 | Mackie SRM-450 System

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M&K series mx200 subwoofer humming


There are a couple of possibilities. The first one is just moving the ac cord that goes to the power supply away from the board by tucking it into the insulation. The other is you may have a bad (oscillating) STK- 4050 output IC which is availabe from MCM electronics. The power supply caps may also need to be replaced.

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Humming sound


you might need a surge suppressor i think that what its called i had a problem like that with one of my old cars the noise is generated from the engine and it goes through the power creating a surge which makes it hum cause the power needs to get filtered properly. you conect it in the positive and negative wires

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Subwoofer hums under power not hooked to system & hooked up?


This may or may not apply to your particular problem. On similar humming sound problems, I normally would look for either a fault in the input side and/or a leaky/defective capacitor in the power supply. On the input side, this may be a frayed shielded wire, loose connector (esp. the outer which is normally the ground). Try completely removing the connecting/input cable that goes into the subwoofer. If that doesn't work, then it you may want to check the big capacitor in the power supply section of the subwoofer. If you are not that familiar in working with power supplies, may I suggest that you ask any electronic technician to have a look at it since capacitors store a rather hefty voltage. Better be on the safe side. Hope this works out ok with you

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