TAD 6L6WGC Max Plate Dissipation?

[Dave_C]

Is it 30W like the original WGC or is it less? I found a couple threads indicating it was 30W, but some folks had doubts and thought it was 25W. The TAD site does not have data sheets. Does anyone have definitive information on this?

Thanks,
Dave

[mr coffee]

on the conservative...

[GenoBluzGtr]

Mike K (Blue Strat) will weigh in here eventually and set us straight, but I remember reading somewhere that these are biased just like regular 6L6s, so the Higher value is likely correct, but I also agree with Mr Coffee... it won't hurt a thing to start out lower, see if you like the tone. If not, by then you should have a definitive answer.

[Blue Strat]

It's difficult to know since there's no spec for a WGC which is a designation that never existed until someone made it up fairly recently. Maybe the guys who distribute TADs would know.

[Johnny Z]

Is it 30W like the original WGC or is it less? I found a couple threads indicating it was 30W, but some folks had doubts and thought it was 25W. The TAD site does not have data sheets. Does anyone have definitive information on this?

Thanks,
Dave


What kind of amp and whats the Plate Voltage? Lots of newer amps run a higher PV than older amps. My understanding is PD is usually between 60-70% for most Class AB amps. I don't know all the why's but my Reverend is running about 68% PD, it's PV (483v) & bias (-43v) according to my PD Chart. You might try to find out what the max PV for the tube is, some are 450 V others like Ruby 6L6GCMSTR is 500v. I think most 30 watt tubes are rated about 500v.

[jetlag]

I emailed TAD some time ago and they replied saying it was a 30 W tube that could be used in any 6L6GC application. They also indicated that if " I had a 7581A application, I should use their 6L6GCSTR tube instead of the 6L6WGCSTR" , which would be the tall bottle 6L6 they sell. I took it to mean they didn't want the short bottle 6L6 in a 35W application, which makes sense.

[Johnny Z]

I emailed TAD some time ago and they replied saying it was a 30 W tube that could be used in any 6L6GC application. They also indicated that if " I had a 7581A application, I should use their 6L6GCSTR tube instead of the 6L6WGCSTR" , which would be the tall bottle 6L6 they sell. I took it to mean they didn't want the short bottle 6L6 in a 35W application, which makes sense.

Good info! I can't think of any reason to try to push 35 watts from a 6L6. Must be a good tube to do that.

[johncarte]

i read that the str version was for a cleaner sound than the wgc...amp goes higher before breaking down..it was on this link..go down page till the tads show up
http://www.vacuumtube.com/guitartubes.htm

[jetlag]

John, both versions of the TAD 6L6 tubes are "STR" or special tube request. The short bottle is called 6L6WGC-STR and the tall bottle is called a 6L6GC-STR. You're right, the tall bottle is a louder, cleaner tube with more extended highs and lows.

[clunk]

I used to have a Two Rock Emerald Pro that originally was built for 7581A's. I bought both tube types from TAD and both worked fine with that amp.

Clunk

[Dave_C]

I emailed TAD some time ago and they replied saying it was a 30 W tube that could be used in any 6L6GC application. They also indicated that if " I had a 7581A application, I should use their 6L6GCSTR tube instead of the 6L6WGCSTR" , which would be the tall bottle 6L6 they sell. I took it to mean they didn't want the short bottle 6L6 in a 35W application, which makes sense.

Thanks, JL! Couple other sources agree with the 30W number. I'm running a pair of the short bottle TAD 6L6WGCs in a Fuchs TDS-50. The plate voltage (at 119VAC) is 488V. So, assuming a 30W tube, for 60% dissipation, the plate current should be about 37 mA. They sound great anywhere between 33 mA and 38 mA, so I set them for 36 mA cathode current, knowing that plate current would be a bit lower, but also allowing for slightly higher VAC from the Furman AR-15 Series II regulator I use, depending on tap and input voltage.

Thanks for the other input too, fellas!

:AOK