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In Reply to: RE: lowest Z line-drive CF mode noval twin-triode, must be no taller than 12A_7 types. posted by Timbo in Oz on January 04, 2016 at 19:15:13
The 5687's that I have are all the exact same size as a 12ax7.
I did a search on ebay for the 5687 and got 400 auctions.
Tre'
Have Fun and Enjoy the Music
"Still Working the Problem"
Follow Ups:
I will try buying a few 5687s.IF those short-arse 5687s will - in CF - give a usefully lower z-out than a 12au7?
How many can you spare?
Warmest
Tim Bailey
Skeptical Measurer & Audio Scrounger
Edits: 01/05/16
TubeCad says a CF with a 5687 has a Zout of 116 ohms vs. 432 ohms for the 12au7.Here's a pair of tested good GE 5687WA JAN for $13.
Tre'
Have Fun and Enjoy the Music
"Still Working the Problem"
Edits: 01/05/16
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