can power cable help cure static problem?


I have had an ongoing problem with static with my audio system which is in living room where wide screen television also is.

It is a bit odd because static only comes out of 1 of the speakers. I switched around the mono amps and then the static came out of the other speaker so I know the problem is not the speakers. I performed other tests to eliminate the possibility that the problem is the preamp or cd player.

The static started after getting the television so its not a coincidence. I have moved the amps as far from the television as possible. The outlet for the audio equipment is on separate outlets than the television and tivo device.

Based upon these simple acts, the static does not seem to occur unless the television is on while the stereo is on. For instance, I listen to a cd with the volume of the tv turned off.

Can anyone recommend anything to try to eliminate the problem when both the tv and stereo are on.

The television power cable cannot be changed since it is permanently connected to the tv.

Thoughts I had include:

I could put an aftermarket power cord on the tivo device.

I could also upgrade the power strip I used for the video components from monster cable to some other product. The tv cord will not reach the outlet directly.

I could upgrade the outlets to hospital grade outlets.

any ideas would be appreciated?

Michael

equipment

lamm 2.2 mono amps
emmlabs dac and cdsd transport
purist dominus interconnect cable
audience au24 speaker cable
128x128karmapolice
It would be helpful if you'd describe the "static" in a little more detail -- like between stations on a tuner (white noise), or more of a snapping sound (electrical discharge) or hum/buzz (like transformer or motor EMI) Anyway, you stated:

"I switched around the mono amps and then the static came out of the other speaker so I know the problem is not the speakers."

OK. Did you leave all power cords, interconnects and speakers cables in their initial positions when you swapped the amps? If you did, and the static sound still follows one of the amps, then you'd have to suspect that it's the amp driving whichever speaker (L or R) has static coming out of it. Could be a loose connection in amp's manufacture that's picking up RFI. Frankly I'd be more suspicious of the amp if it were a tube amp. In fact you might want to try swapping just the two single tube in each amp, leaving the amps themselves in place. Sometimes tubes can be susceptable to RFI (from your TV) and though I kind of doubt that's the problem, you should rule it out. Also, don't forget that although it's a (less RFI-prone) SS amp, in the case of the Lamm, circuit ground and earth (chassis) ground are separate, so a bad tube or defective cable could be more noticeable.

All that said, if you DID leave all cabling in place and then the static DIDN'T follow the amp swap, then it's a faulty cable. Try swapping them, one type/pair at a time until the static follows one of the cable swaps.

If the problem were the TV (sending out unusually/illegally high RFI or digital hash) it seems to me you should be getting the "static" on both channels. Hope this helps.

.
May have nothing to do with the TV. Try switching the output tubes of the amps.
i think gs555 is going the right way. i had static in one speaker only and switched mono amps, interconnects ,etc.
the static only changed left to right but did not dissapear.

it turned out to be 3 bad tubes in my preamp. once changed the static is gone and the system is dead quiet. try checking the tubes in your lamms. sounds like one of your monoblocks has one or more bad tubes.

klzdo
Klzdo -- the Lamm 2.2 is a hybrid amp containing a single tube, a specially selected 6922 triode, which is why I really doubt it's the tube. Still worth checking as I noted.

Gs5556 -- the Lamm 2.2 doesn't utilize tubes in the output stage. It's all-solid state, except for that single 6922.
Mea culpa, Ngsarch :-( but I'll wager it's that tube that's the cause of the noise.