|   Speaker Interference from Television???? | rocket47
Feb 24, 2002 8:08 PM | | Hi,
I have a Sony 29" Trinitron (they were called 'Kirrara-Basso' in Australia) which is about 8 years old.
Have a pair of B&W Matrix 805's either side of the television powered by Rotel RB991 from the preouts of my Onkyo Receiver. In addition, the Matrix 805 centre is located on top of the television and is magnetically shielded although the Left and Right 805's are not shielded.
My question is that for some time there has been a buzzing sound, sometimes intermittent from the front speakers. I only noticed the other day that this is from the l/r speakers only and the centre speaker is perfectly clear. I know of the problems with USA versions of the Onkyo TXDS777 there was a buzzing or hum problem but this was never an issue with the Australian (240v AC) version of this receiver.
My left and right speakers are located about a foot to a foot and a half from either side of the television with little room to move them further without changing the two sofas we have in the home theatre. I thought that this problem of buzzing may have been due to the mass of cables that were intermingled including power cables, speaker and rca cables but I have sorted all these out so there is no conflict and the problem still exists but only in left and right speakers.
Has anyone had a similar problem? I was thinking now that this could in fact be interference from the television causing the hum to be generated in the crossover components of the left and right speakers, the problem perhaps not occuring in the centre speaker because it is magnetically shielded?
Can anyone help and if this isnt the problem and as dealers have suggested its a hum problem, would a power conditioner work and which are the best?
Thanks. |
| Your problem are cables, not the TV. | SmokE
Feb 25, 2002 12:54 PM | | Most hum and buzzing noise are from interconnects picking up noise from TV/power/AC cables. I don't think power conditioner will help (see last response concerning Grounding).
You can do couple of things that may help:
1. Reconnect all of your interconnect cables. Sometimes dust and oxidation will get between contact on RCA plugs, and removing, cleaning and reconnecting cables will solve this problem
2. Route all of your interconnect cables away from TV, not toward it. Also moving your Amp from current location might help.
3. Ground your Amp-and other components-since most Amp have Ground post on the back. |
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