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In the Forum: Audio Discussions
In the Thread: Initial thoughts about new/old Lamm ML2s
Post Subject: Socket replacementPosted by Lx_ on: 1/2/2011
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Hello,
After buying replacement sockets for the 6C33Cs and keeping them stored
for months, I finally fitted them. I had been having the signs of tubes
dying for several weeks: thumps in the bass drivers when warming up,
after about 15/30 minutes -- the workaround is to simply turn off the
amp and then back on. Only one amp did this (the same that had failures
before). So I decided it was time to give a shot to the new sockets.
I thought the original sockets were cheap plastic ones. That is what I
have read several times here, and they looked like plastic. I was quite
surprised after unsoldering the wires and taking the socket away to
discover that they were actually ceramic. Two of them bear the Reflector
logo (rhombus), so I assume them to be Russian (not too surprising). It
looks like they had not been replaced (stock sockets), and looked
pretty good to me. BTW, mine is a ML2.1, so maybe Lamm changed the sockets he used for that (or maybe it was just luck).
Anyway, the new sockets are in. I still had some thumps while burning in
new V2 tubes with the same V1s as before, so it was definitely a
problem with a V1. I switched the old V1s for the old V2s and haven't
had a thump yet. I though maybe there was a problem with the sockets
(arcing) but it now looks like this wasn't the case.
Happy new year to all of you, with plenty of listening pleasure!
Cheers
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