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RE: You aced the test...

Posted by ACHiPo (A) on July 23, 2021 at 11:31:46

In Reply to: RE: You aced the test... posted by acres verde on July 23, 2021 at 11:16:35:

I built my M60s about 1994, so I've got a lot of experience with Ralph's magic. I was tempted to go a different direction (Benchmark Class H/A/B or Pass Labs 600.8), but at the end of the day decided to stick with the magic I know and love.

I sent my M60s back to Ralph about 5 years ago to be upgraded to III.2 version. I retubed them when they were returned and had zero issues since. I figured the tubes were due for replacement a few months ago even though I didn't have any issues. After a few infant mortalities the amps have been trouble free and find sounding since. By the way just because the fuse is intact does not mean a drama-free start up--I had some smoking hot (literally) NOS AS7s in this last batch. Only after which I learned that Ralph recommends running NOS tubes in stand by for several days to avoid arc-over events.

I am a tad concerned the MA-1 won't have enough grunt for the 645s, but I just don't have room or power for MA-2s. Plus there are quite a few people running MA-1s especially on the newer more efficient panels.

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