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RE: EML vs. Sophia Meshplate 2A3

Posted by tube wrangler (M) on July 12, 2012 at 18:25:40

In Reply to: EML vs. Sophia Meshplate 2A3 posted by greg7 on July 12, 2012 at 12:55:44:

Those are not Mesh-Plate tubes. Mesh is interwoven. Those are" Tin-Can" plates with holes punched into them.

W.E. made some tubes this way, so did Mullard, etc. All of these did the same thing-- distort.

TRUE MESH (interwoven strands) catches electrons very well-- ON THE FIRST TRY-- electrons don't bounce back from the interweaves. This is expensive-- and necessary-- to build..

Solid-Plate tubes reflect SOME of the energy, creating time-delayed signals that are ADDED ONTO the signal.

Solid-plates, with holes drilled or punched thru them are sales gimmicks-- and nothing else of value.

These cool better because of the ventilation thru the holes, allowing puffed-up specs. . They also cause some electrons to try to go thru the holes. This happens in what may best be called random-mess-making. Kind of like letting a Child-Care Center go for 5 hours with no adults present. Random Train Wrecks.

In a Push-Pull amp, or in a S.E. that is built according to old-time Push-Pull rules, you may not hear all the train wrecks occurring. Push-Pull amps will also cancel-out quite a bit of these distortions, S.E. amps will not.

People always look for CHEAP-- but the truth is-- tubes like this are very expensive compared to what they actually are-- almost worthless sonically if used in musically transparent equipment..

On the other hand, EML tubes are actually worth all that they cost-- maybe more.

---Dennis---

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