2. amps-preamps
  3. 1050859150

How do 6SN7WGT vs 6SN7GT differ?

I have Cary WE300B SE monoblocks and a Cary SLP98P preamp. I have been purchasing back-up tubes to stash away for the future. I am confused by the broad number of GSN7 tube types available, in particular the difference between N.O.S. 6SN7WGT and 6SN7GT(A/B)tubes. Are they simply interchangeable?

I use high dB horn speakers (103dB sensitive), so I am concerned about tube noise. I have teflon tube dampers on all tubes, and these, I believe, help with microphonics.

Thank you.
cardiackid
sugarbrie
3,854 posts
 
Oh.... the most popular 5692 tubes are the RCA Red Base and the CBS Hytron. If you find any other branded 5692 tube with the same color Red Base, then it is the RCA tube. RCA made some for a few other companies.

The 5692 will generally have the lowest possibility for microphonics.
elevick
2,636 posts
 
There are more points to these. The WGT is the highest voltage handling plus it has an 11 second warm up time. This prolongs tube life all around. I happen to have 8 NOS CBS 6sn7GTB tubes if you need.
Emery
emfoods@yahoo.com
sugarbrie
3,854 posts
 
Actually, it is the WGTA/GTA/GTB that has the highest voltage handling. The WGT is a military GT.
cardiackid OP
63 posts
 
Thank you for the offer Emery. I purchased 4 more Jan-Philips 6SN7 WTGA from Angela Instruments yesterday before seeing your offer tonight.

I appreciate all of your help, and I have my eye out for the fabled 5692 tubes to try in my pre-amp. I may have to wait a month to afford those.

Greg
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