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Lamm LL2.1 Deluxe "DC Offset"?

Hi there,

Is there anybody who has a deep experiences with high fluctuated "DC offset" in Lamm LL2.1 Deluxe PreAmp?.

My Lamm LL2.1 Deluxe Preamp shows a highly fluctuated DC reading that reaching +-200mV even more. Last night measurement showed a flucuated reading and reached +-300mV.

A three weeks continuous observation shows that the preamp DC fluctuation seems higly affected by the swing/fluctuation of AC Volatage,day time and night time. I can see that even as small as 0.3V AC voltage abrupt swing will directly generate significant DC offset in the LL2.1.

Your sharing experience and advices are higly appreciated.
gr-gin

Showing 2 responses by p59teitel

p59teitel
314 posts
 
"Contacting the manufacturer did not give any help, they shift it to the dealer."

Whenever Lamm tries to say that you need to resolve the problem with "your dealer," remind them that THEY chose the dealer to sell their product, which makes it THEIR dealer you are having the problem with.

At this point I would demand that Lamm take back the unit and either replace it or give you your money back. And if you don't get satisfaction, then join every audio forum you can find and tell your story. Eventually the negative publicity will get so bad that they will be forced to take care of you.
p59teitel
314 posts
 
I would go with option 1 and have the dealer replace the caps. That way you will have shown Lamm a good-faith effort on your part to see if that was the problem.

And who knows, maybe that will fix things. If not, then it's time for either a full replacement or your full money back.
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