Welcome! Need support, you got it. Or share your ideas and experiences.
208.30.83.3
In Reply to: RE: Amperex Bugle Boy 6BL8/EFC80............ posted by GP49 on July 09, 2011 at 20:54:57
nt
Follow Ups:
I broke down and bought 2 Jan Philips USA 7199s. 5 Modern Mullard 12ax7s and I also bought a 6 pack of NOS GE 6ea8..
I was looking close at the 6ea8 compared to the Jan 7199. The are very close. Almost identical in construction. So what does the big supposed tonal difference come from?
I don't have direct knowledge of exactly what is different, but much of what determines how a tube functions is invisible without destroying the tube and taking the guts apart: how the grid is wound and spaced, both between its own windings and from the cathode and plate. The way audiophiles identify tubes by ribs and ridges and stuff on their plates is only that...a means of identification. The plates actually have far less to do with how a tube functions than the grid.Can you tell by a non-destructive look that a cross-section of an EL34's grid windings are a different shape from those in a 6550 or KT88? Didn't think so. And that's a much bigger tube than a nine-pin miniature like a 7199 or 6EA8.
GP49
Edits: 07/14/11
I tried the subs and they sound fine to me..
Post a Followup:
FAQ |
Post a Message! |
Forgot Password? |
|
||||||||||||||
|
This post is made possible by the generous support of people like you and our sponsors: