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In the Forum: Audio Discussions
In the Thread: Initial thoughts about new/old Lamm ML2s
Post Subject: Game, Set, MatchPosted by Paul S on: 12/5/2009
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Laurent
Although I have whined that the ML2 requires "tweaking" to get its best, the truth is that it is closer to the dream of acceptable "plug and play" performance than any amp I have ever used. Which is a long preamble to saying I am hardly an expert when it comes to the electrical doings in this amp, mainly because I have not had to be, and I am too lazy and nowhere near interested enough in DIY to dig into the things until I want to accomplish something specific.
If you have a manual, it is actually pretty informative, as these things go.
V1 is a voltage regulator, so no surprise that it's death affects voltage (and current...). OTOH, a dying V2 might display similar behavior.
Aparently, a few people complained back to Ken Chait that his "carefully-matched" (with an adaptor on his Amplitrex AT-1000 machine, i presume) pairs either weren't matched to begin with, or they did not stay matched. Anyway, Ken's response was that he will no longer knowingly sell 6C33Cs to "Lamm owners".
I'm not saying you shouldn't stock up on 6C33Cs, but the tubes you are most likely to burn through are the 6N6Ps.
I also wonder about the supposedly simple but ever mysterious procedure for matching 6C33Cs for gain. Presently, my amps are ~ 2 dB apart.
Best regards,
Paul SRerurn to Romy the Cat's Site