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Sound Problem Toshiba Regza 37X3030D I am experiencing Sound distortion, a certain midrange frequency causes vibration within the set enclosure this results in distortion in mostly speech but also some music, an attending Engineer has advised me this is common in most LCD,S. Can anyone help ?

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  • drags Feb 16, 2008

    thanks loads will give it a try

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Hi there, i turned the bass boost down by '5' and also put bolts in the rear support holes to stop the case vibrating. Pain the the a** I know but it works.

Posted on Feb 15, 2008

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If you wish to get some details; check the site linked here. Pull up older posts. Surf the site with patience. http://electronicshelponline.blogspot.com/
Line, faults & possible causes to LCD screen are given with illustrations.

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Toshiba 37X3030D TV. Screen fails to light, sound OK.


That'll be the inverter board. It might be the 6632L-0490A made by LG Philips. If it is, you'll find the 2 capacitors have leaked and a bit has blown out of the chip. The inverter board is hidden behind the main board on the 505 model.

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My 10 inch kickers sound distorted not clear at at and muffled


Does the enclosure volume and style/type match the sub requirements? Are the subs wired correctly? I've seen lots of marking on the wrong terminal. Try switching one of the subs from pos to neg and neg to positive. It will be dramatic and very noticable if that's all it is.
Is your cutoff frequency correct for the sub? Make sure they're not getting full spectrum frequency. Are the Subs physically hitting any part of the enclosure at any point in the excursion? Are they screwed securely to the enclosure? Is the sub surround intact and smooth through the full extcurion? Is the amp ok? Got enough current throughout the system? Battery, Capacitor, Wiring, fuses, speaker wire etc. Bigger is better but always the correct fuse rating.
Signal from the head unit? Proper preamp wiring?

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Television speaker distortion


hi take it back to where you brought it from i've for a repair or new tv
thanks

regards
shaun

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1 Answer

Toshiba lcd 52rv530u has sound but no picture completely black


Check its back light inverter board for the fault. This is a skilled work. Contact any experienced service technician to get this set repaired.

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2 Answers

Sound is distorted at certain frequency / volume what would cause this?


More infornation is required to provide a real answer, but I can give you a few possibilities:

1) There is a problem within the feedback loop that is allowing some frequencies through. This will be more prevelant at higher volume levels.

2) If there is a tube pre-amp section, the tube can be "microphonic". This too is generally more likely at higher volume levels.

3) Defective components in the amp section. These may pass some DC voltages that will sound like distortion.

If you can, please experiment a little to try to find when the problem is most obvious. With more details about when the problem occurs may give us enough info to determine the cause. Otherwise a trip to a service shop that has access to test equipment will be required.

Dan

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1 Answer

Have in built sound card in D845HV mother board. Experiencing heavy distortion as soon as the mic is connected. It was working well till last month.



Distorted or scratchy sound can be caused by several problems. Improving the sound can be as simple as rearranging your hardware components. The following suggestions may resolve the problem of scratchy sound:
  • Are there any other devices around the speakers or wires for the speakers? Electro-magnetic interference can cause poor audio. Try moving your speakers and wires around and away from other devices.
  • Have you recently added any new cards to your computer? Cards within the computer can also cause electro-magnetic interference. Try moving the card to another location within the computer, if possible.
  • Verify that you are not encountering a hardware issue with the speakers you have by trying another pair of computer speakers.
  • Poor audio quality or low volumes may occur if you are using passive (non-amplified) speakers.
  • Are your speakers too close to your monitor? The speakers can pick up electrical noise from your monitor so move them farther away. Subwoofers should never be placed near the monitor because their powerful magnets can interfere with the picture. They should be on the floor to maximize low-frequency transmission.
  • Are you experiencing sound problems only with particular games or programs? If you notice sound problems such as stuttering voices and static on some games or programs but not others, check with the software vendor for a software patch.
Data courtesy of: http://www.intel.com/support/motherboards/desktop/sb/CS-020642.htm

Also make sure to inspect your microphone, and the cord that connects it to your PC, for physical damage.

If you're still experiencing issues, you may need to replace the your microphone.

I hope this helps.

Ben P.


Apr 11, 2009 | Computers & Internet

2 Answers

Auto Sub woofer


There are several causes of distortion in an audio setup.

1) Speaker is unable to handle the frequency that it's being fed
2) The volume is too high for the speaker to handle
3) The amp can't provide enough power to drive the speaker adequately.

Either way distortion is BAD & best to be avoided unless you want an excuse to buy a new set of speakers :P

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