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In Reply to: RE: Warmer 6922 for Lamm M1.1 monos posted by montaldo on January 07, 2017 at 14:06:41
I use a pair in my Sli-80 and got a warmer midrange without losing detail. Had EH 6922s before that.
I didn't know there was a Bugle-Boy 6922 (??).
Follow Ups:
Can any 6dj8 substitute for a 6922 in any amp? Or do I need to find out from Lamm whether I can substitute?
Stu
I believe the max plate voltage of a 6dj8 is about 130 V, while it is around 220 for a 6922, so if an amp has been designed around a 6922, it could be harder on a 6dj8, and so will not last as long as the 6922.
Check with your amp manufacturer.
I will suggest "6DJ8 Amperex Orange World Logo, dimpled disc getter. Made in Holland.", which can be currently purchased from Brent Jessee @ audiotubes.com.
Better/fatter sounding yet would be the late 60's/early 70's production (dimpled disc getter version) produced @ Mullard Balckburn, but they don't come up very often.
I once rolled pretty much every 6922 type tube in the input position of an Audion Silver Night 300B SET amp, and those are my rec's.
The late 60's/early 70's Amperex Holland O getter (usually with Orange Globe logo) mentioned elsewhere is also a very good one if the dimpled disc version(s) are too fat sounding in your setup.
Avoid 7308's period, for the sound you want to achieve.
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