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In the Forum: Melquiades Amplifier
In the Thread: Single-stage Melquiades vs. DHT amps
Post Subject: 1 in 50?Posted by Paul S on: 4/10/2009
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Didn't you first become aware of MF "problems" when you got everything else working better via the PP2000, and the MF wound up dropping back to weak sister status with respect to system-wide PP2000 benefits?

But how often is a "serious" (and ever-evolving) hi-fi system all "of a piece" with respect to optimum performance and inter-component balance?

1 in 50 does seem like long odds against hitting your specific design criteria, all right, and the increased output would, indeed,  likely shorten the life of the tube pushed that hard.  But then, you just said as much yourself; and in any case you have long since envisioned a work-around.

With luck, you will soon have again a midrange that is at least the equal of the rest of your system, and you can use most of the 6E6Ps instead of having to cull 1 of 50.

Many years ago, Luxman came out with a subsequently-notorious PP amp that sounded as good as anything I'd ever heard to that point --- for about 6 hours.  Then, the wildly-overdriven output tubes would start to slide, sonically, even though they still "tested strong".

Less extreme, but still illustraitive, are the 6N6Ps in the ML2s.  I've gotten to where I just toss them when they sour, without even bothering to "test" them.  I am getting 4 to 6 months from them; certainly not the 1 year they are "supposed" to deliver.

Oh, well...

Basically, tubes are only as good as they sound, and screw tubes for tubes' sake.

I am not kidding when I say I would switch to SS in a heartbeat if I found something I liked that I could fit into my current plans.

Did you try cleaning and greasing the sockets and pins, just for the Hell of it?

Best regards,
Paul S

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