2009 TDPRI Giveaway Winners List is available HERE

Brad Miller · January 17th, 2009, 11:26 AM

Hey guys. I have a "68 Super Reverb. I took off the metal tube cover on the little tubes and noticed that the 2 tubes on the far right were hardly glowing at all. Is this Normal? What do these tubes affect?

Gunny · January 17th, 2009, 11:37 AM

if the amp works in both channels, the amount of glow from the tubes is not an issue. Of course no glow = dead tube. SR is my fave amp and I'm happy to say I own one.

Wally · January 17th, 2009, 12:46 PM

Brad, Gunny makes a good observation in that if both channels are working, those tubes are getting heater filament voltage. V1 on the far right is the preamp tube for the Normal Channel. V2..secodn from the right..is the preamp tube for the Vibrato Ch.

January 17th, 2009, 11:26 AM	#1 (permalink)
Brad Miller Tele-Holic Join Date: Mar 2003 Location: Kokomo, Mississippi Age: 36 Posts: 960 8 Photos	Super Reverb Tube Help? Hey guys. I have a "68 Super Reverb. I took off the metal tube cover on the little tubes and noticed that the 2 tubes on the far right were hardly glowing at all. Is this Normal? What do these tubes affect?

January 17th, 2009, 11:37 AM	#2 (permalink)
Gunny Tele-Meister Join Date: Jan 2008 Location: Ajax, near Toronto Posts: 108	if the amp works in both channels, the amount of glow from the tubes is not an issue. Of course no glow = dead tube. SR is my fave amp and I'm happy to say I own one.

January 17th, 2009, 12:46 PM	#3 (permalink)
Wally Poster Extraordinaire Join Date: Mar 2003 Location: Lubbock, TX Posts: 6,010	Brad, Gunny makes a good observation in that if both channels are working, those tubes are getting heater filament voltage. V1 on the far right is the preamp tube for the Normal Channel. V2..secodn from the right..is the preamp tube for the Vibrato Ch.

2009 TDPRI Giveaway Winners List is available HERE

IMPORTANT:Treat everyone here with respect, no matter how difficult! No sex, drug, political, religion or hate discussion permitted here.