The Reference 6SN7 Thread

[Ripper2860]

@bcowen -- Quit whining. Your amp was built sideways at your insistence. A sideways amp produces sound 90 degrees out of phase from the original signal, so of course all the other Incubus amps are gonna sound better. It's not like Tom can do anything to about that -- it's physics!

 

[JKDJedi]

I'm really beginning to not like you as much as @Ripper2860 .

(I'm sure he's joking)

 

[Paladin79]

(I'm sure he's joking)

Bill has to be semi kind to me in case his sideways amp goes sideways.

 

[bcowen]

@bcowen -- Quit whining. Your amp was built sideways at your insistence. A sideways amp produces sound 90 degrees out of phase from the original signal, so of course all the other Incubus amps are gonna sound better. It's not like Tom can do anything to about that -- it's physics!

OK, I'm back to not liking you most.

 

[LoryWiv]

OK, I'm back to not liking you most.

Some serious frenemy vibe going down on this thread! t's all in good fun, right? if so, the rest of us will just "roll" with it.

 

[bcowen]

Some serious frenemy vibe going down on this thread! t's all in good fun, right? if so, the rest of us will just "roll" with it.

Yes, all in good fun to be sure.

 

[Paladin79]

All three of them use a headphone amp I designed specifically for 6sn7 tubes so it is always good to learn of their experiences with various tubes. I am particular interested in the GEC L63's and power tube @bcowen is listening to and hoping he sends a set my way.

 

[bcowen]

All three of them use a headphone amp I designed specifically for 6sn7 tubes so it is always good to learn of their experiences with various tubes. I am particular interested in the GEC L63's and power tube @bcowen is listening to and hoping he sends a set my way.

LOL! I only send you GE's with low GM or dead shorts. Now you want something different?

Of course, anything is possible when amp upgrades might be involved.

 

[Paladin79]

LOL! I only send you GE's with low GM or dead shorts. Now you want something different?

Of course, anything is possible when amp upgrades might be involved.

Ok send me a GEC pair and a WE along with your amp and and I will help you out. Before long @FLTWS will have heard both versions side by side so he might be able to shed some light on the changes. Just remember his version one is no slouch.

Have you described the GEC here? That might get us back on topic a bit.

I just located some 1956 Melz that seem to be few and far between. It has some of the traits of the 1578 but not the perforated plates, I got one by accident and consider it near the top of 6sn7 equivalents I own.

 

[attmci]

LOL! I only send you GE's with low GM or dead shorts. Now you want something different?

Of course, anything is possible when amp upgrades might be involved.

I don't think it's too difficult to put a "C" after the "GE" and a "L63" anywhere on the tube. Bangbangbang.

 

[Ripper2860]

OK, I'm back to not liking you most.

My work here is done.

 

[bcowen]

Have you described the GEC here? That might get us back on topic a bit.

I don't think so. Since this is a 6SN7 thread and the L63 is a 6J5 sub with only one triode, my comments would have only been 50% appropriate (which, of course, is 100% more appropriate than usual ).

I'm finding a lot to like with these. Glorious midrange and a sweet yet detailed treble. Not the last word in bass punch, but the bass that is there is very nicely defined with good extension. Adapter needed of course to drop a pair in a 6SN7 socket (adapter shown below from @Deyan ). Langrex (through Ebay) still has these available -- not cheap, but not stupid-priced like many genuine GEC's these days...

https://www.ebay.com/itm/L63-CV1067...785746?hash=item48a5d41812:g:BK8AAOSwH7ZdeoEt

 

[maxemil]

Can anyone help me identifying the production code of my NOS Sylvania 6SL7 GT VT-229. I could not find anything online pertaining this odd code type.

Thanks a lot.

 

[JKDJedi]

Can anyone help me identifying the production code of my NOS Sylvania 6SL7 GT VT-229. I could not find anything online pertaining this odd code type.

Thanks a lot.

the 582 throws me off...as there is only 52 weeks in a year.. so..my uneducated guess is... (from the next string of numbers...) 1958..5th week (Feb)

 

[maxemil]

Did Sylvania really make the GTs until 1958???