|
Audio Asylum Thread Printer Get a view of an entire thread on one page |
For Sale Ads |
207.89.249.17
Question? How come little seems to be known or recommended regarding the '40s somewhat rare Sylvania 6SN7GT flat type stagger black plate.I have been told this tube is either the best sounding 6SN7 or on par with Tung-Sol 6SN7 round black plate from a few sources.
Follow Ups:
Do your sources sell this particular tube? I ask because IMHO the stagger plates aren't remotely close to on par with the TS RP; IME, they sound very different. The TS RP is significantly more refined and delicate sounding whereas the staggered Sylvania 6SN7GT is more gritty and excitable (punchy bass, splashy highs). It's not a bad tube, but it certainly isn't like the TS RP. The more common T-plate bottom getter Sylvania 6SN7GT/VT-231 bears more sonic resemblance to TS RP then the staggered Sylvania does.AFAIK, the staggered plates were made in limited production in the early 1950s (all the ones I've had were from 1951, to be exact). At first I thought these were relabeled Ken Rads, but their wiring and mica design are different. Perhaps the plates themselves were sourced from Ken Rad but the rest of the assembly was done in-house by Sylvania.
These are 1940s Sylvania, not '50s. Per reports directly from a few audiophiles, quality on par with Tung-Sol 6SN7 round black plate.
Note: I never heard Tung-Sol 6SN7 round black plate myself.
I have some from the late 40s. They are Ok, but not great. Comparisons are irrelevant. I gather you are trying to sell some.
If so, don't use the Tungsol comparison.
Jack
.
I'm in agreement with Len. All of the flat plate Syls I have are from 1951. One plate is slightly in front of the other. Unlike Ken-Rad, they are mounted straight on the mica, rather than on a diagonal (reminiscent of RCA). There were both a black plate and a gray plate version made in 1951 that have very different sounds. The gray plate has a lush midrange, but lacks fine detail. The black plate has plenty of detail, but can sound a bit harsh. Neither of them has anywhere near the finesse of the Tung Sol RP.
What are the date codes? In retrospect, it's possible I saw a few from 1949 (have gone through too many tubes to have a clear recollection). I have never seen any staggered Sylvanias from early to mid 1940s.
Yes, they are from 1949 to 1951.A mediocre 6SN7 at best. Flat and one-dimensional. Not terribly musical.
This post is made possible by the generous support of people like you and our sponsors: