flaming_june
500+ Head-Fier
- Joined
- Jun 20, 2006
- Posts
- 553
- Likes
- 17
However, is there any truth to low durability of Shuguang tubes?
solid state recification offers virtually zero voltage sag compared to tube rectification so the sound will be more dynamic...
but, you should ask jack of wooaudio if it's alright for the wa6. solid state rectifiers put full voltage immediately to the
cathode of the output tubes without letting it warm up to put up an electron cloud. this will cause cathode stripping and
cause premature death to the output tubes.
solid state recification offers virtually zero voltage sag compared to tube rectification so the sound will be more dynamic...
but, you should ask jack of wooaudio if it's alright for the wa6. solid state rectifiers put full voltage immediately to the
cathode of the output tubes without letting it warm up to put up an electron cloud. this will cause cathode stripping and
cause premature death to the output tubes.
Hay guys I haven't posted for awhile to busy at work
After reading the posts about the expensive 6SN7RP their is a pretty much unknown tube the 7AF7 round plate.
It has the same specs as a 6SN7 with a little lower gain 16 vrs 20 for the 6SN7 this might make it a better candidate for the WA6.
The 6DE7 has lower gain than a 6SN7.
I tried these in a 22 and sounded pretty darn good maybe not as good as my 6F8Grp but I don't have a WA6 to try these in.
If somebody that has a WA6 and would like to try the 7AF7 I will send a pair of tubes and adapters for a try and let us know how they sound.
The 7AF7 only costs $11.10 at Antique Electronic supply and as far as I know all brands are Round plate.
Let me know if anyone has interest. Glenn
TheAudioDude said:
This was the most rewarding thing about switching to the 6SN7, hearing these kinds of details. Actually the best tube I have heard for highlight guitar strings and their associated textures/details is the Tung Sol mouse ear tube. The almighty round plates achieve the same level of resolution, but the mouse ear seems to specifically call attention to it where guitar is concerned, making it easier to take in. I honestly think the round plate is presenting the sound more accurately, but the mouse ear will spoil a person who loves to listen to guitar in general.
Each 6SN7 tube I've tried seems to have one thing it is particularly good at. The RCA greyglass was piano. The mouse ear was guitars. The Sylvania bad boy was violin (as of yet nothing has impressed me more than this instrument with this tube, I melt into my chair each time I hear it). Then I got the TSRP which breaks the pattern by being equally good at everything. The downside is it is kind of fun when a tube calls out a particular instrument as special, even if it is not faithful reproduction and the round plate will not do this. I was actually kind of glad, because it means my other tubes still serve a purpose.
Here is the answer I got from Jack regarding the use of the ss rectifier in my Woo6 Max:
"SS rectifier has lower internal resistant and thus output higher voltage. It could possibly damage the tubes. I have not expereienced it in real application so cannot come to a final conclusion. However, there is no need at all to use solid state rect while tube rect produce better sound."
Guys, I just received my set of TS BGRP's from Walt (e-bay) and wandered if you could advise me.....
Tube 1 is just perfect and does look brand new. Tube 2 still looks nice (although slightly taller than tube 1) but has a terrible rattle as though there is something loose inside, also the base is ever so slightly looseI have tested them and dispite the issue with tube 2 they do sound amazing. Will the issue with tube 2 shorten it's life do you think? I haven't written to Walt yet as I thought I'd get your take on it.
It's a little disapointing really considering the cost. Also tube 1 is Dec 1942 and tube 2 is Nov 1942. Again, disapointing......
Hey Guys,
Here is the answer I got from Jack regarding the use of the ss rectifier in my Woo6 Max:
"SS rectifier has lower internal resistant and thus output higher voltage. It could possibly damage the tubes. I have not expereienced it in real application so cannot come to a final conclusion. However, there is no need at all to use solid state rect while tube rect produce better sound."
... I'll pass on any info [Jack] provides. Until then, if I use them at all I'll use them with a couple of JJs or some of the cheaper, NOS tubes. Anyway, FYI. I'll follow Jacks advice unless I learn more from the coming tests.
But damn those things really sounded good with those matched TS tubes!!!!!