can power cable help cure static problem?

Is "earth ground" the same as adding a ground isolation circuit. Usually any unwanted noises that occur when connecting video componentry goes right back to origin of incoming signal. I have always used a Mondial "Magic" ground isolation circuit at the point where the signal (cable) enters the house. It has reduced all unwanted noises in my audio system, usually right down to slight reduction of "white noise" also.

Michael, as I said earlier: if you leave the amps in place and swap the tubes and the noise follows (one of) the tubes, then it's the tube. Well it didn't, so you know BOTH tubes are OK. Now, if you swap the amps (L to R) and the noise follows (one of) the amps, then it's that amp -- which is what I guessed to begin with. It's NOT one of your other components.

There's either a bad electronic part or a bad connection in that one amp. Have the dealer send it back to Lamm for repair or replacement -- in fact with equipment of that caliber, I'd insist the dealer send BOTH amps back for a complete inspection. I say that because the problem could very well be that one of Lamm's OEM suppliers provided a batch of defective parts, and Lamm might want to replace a few parts in BOTH amps, so you might as well get it taken care of once and for all. Trust me, I've been through this exact same scenario with ARC, Levinson, Martin Logan. It happens a lot, unfortunately. And if you send in just one amp, than as soon as you get it back, the other one will crap out! It's a COSMIC RULE! Also, remember to ask for an extension of your original warranty period.

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Good move, from your origional post the static follows the amp. Under warranty send it back, through your dealer who should handle the whole exchange and pay all costs at 4 months.

steve

Well I swapped the tube from the one amp to the other but the static remained in the one amp.

I have now asked my dealer to discuss with lamm whether they would exchange the one amplifier.

I think it is likely that the problem is my other equipment because then the problem would be with both amps.

I doubt if I just send back the amplifier that they could figure out such a puzzling glitch.

I owned the amplifier for only 4 months when the problem began.

I will try swapping the tubes as was suggested thanks....tonite I noticed the static even when the tv was off albeit the tivo is always running and so is the directv

Mike

Michael, one more time: the (single) tube in each of your amps is NOT an output tube. If you want to see if it could be one of these single tubes in one of the amps, then just leave the amps im place and swap the tubes. You'll know quick enough.

If it IS one of the tubes, then have Lamm send you TWO new ones, and keep the old good one for a spare. The tubes are not matched as far as I can tell, but you'd be better off with two the same age and from the same production run.

thanks for the input......the static is a quick short burst....its not a hum it more like a short crackle of static....I used the earth ground and it did not make a difference.....

I will recommend to lamm that they supply me with a new output tube since its been less than a year since I bought it. It can' hurt.

Sounds like your TV is interfering somehow with the signal since you mention it's only a problem when the TV is on. It could be some dirty AC. Do you have a power conditioner of some kind? Something that gives clean AC could help your issues.

Mea culpa, Ngsarch :-( but I'll wager it's that tube that's the cause of the noise.

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.

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

May have nothing to do with the TV. Try switching the output tubes of the amps.

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.

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I don't know if any of those would affect 'static.' Have you swapped interconnects? Are you sure that's what it is? What does it sound like?

Kal