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Single Ended Triodes (SETs), the ultimate tube lovers dream.

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Original Message

RE: EML vs. Sophia Meshplate 2A3

Posted by tube wrangler on July 19, 2012 at 14:56:38:

Hello Paul! Funny thing today-- coincidence? I've been working on irrigation systems today.

I have a guest here who has my whole system in his home State-- Wash.

He's developing a small stand-up coax. speaker-- an 8", and wished to use my shops and in general, get some development work done. He's got a great lady with him who is a master carpenter!

Well, I just came in-- soaked and muddy. They were on the Emissions Lab website! Looking at using the 5U4G they make-- maybe. It's a Mesh.

I took another look at it-- I've looked before. Today, I re-read the cautions about transformer DCR-- and other items on their website.

As you no doubt know-- I have the greatest respect for these guys who make these great Mesh-Plate tubes for us. I almost consider it a privilege to be able to buy them!

However, running a High-DCR primary transformer is a good way to get that soggy, syrupy, sweet old-fashioned sound-- NOT High Fidelity. Even worse, running high-henry, low-DCR chokes kind of deletes most of the fun that is in music.

And Cap-Input? Guys, please! I love your tubes- "smack"-- and I love you for making them-- but Cap-Input? NEVER!

Gotta have a choke on that rectifier-- even a little R.F. one-- something-- please! (I love the sound...other things too-- don't get me started!).

So how does one get those fabulous Mesh-Plate EMLs to live with me?

It isn't so bad-- I just soft-startup the power trans primary.

I want that device closed after warmup so the amp can get dynamic swings from the A.C. line. You can hear that, so a soft-startup device must be pretty well shorted after amp warmup.

---Dennis---