SF Twin - cracklin'

wanderingscot · April 10th, 2008, 11:06 PM

My SF twin is starting to make some bad sounds. With master on 4 and vol on 4-5 I get alot of breaking up, and not in a good way... more of an AM radio kind of way. ...especially with lower and mid tones. It's been sitting idle for awhile. Just recently started using it again for gigs. Wondering if dust is the culprit, or tubes , or speakers, or???? Hasn't been re-tubed or biased since 1997. Happens more with my les paul and less with my tele. I know... get rid of the lp.
Thanks,
Scott

eddiewagner · April 11th, 2008, 02:00 AM

my first guess would be the tubes. sometimes stuff comes from the springtank. maybe try to disconnect it and see what´s happening. just two cents.

wanderingscot · April 12th, 2008, 04:43 PM

Thanks. I did check to see if the tubes were loose today, but not if they were bad. Didn't even think about the reverb. I was messing with the volume /tone knobs and noticed with the master vol. on 2-3 and the channel vol. on 8-10 it was really weird. Not the overdrive you'd normally get....but a distortion with some strange overtones. If master is on 7 and vol.is say 3-4, everything is great, nice and clean.

April 10th, 2008, 11:06 PM	#1 (permalink)
wanderingscot TDPRI Member Join Date: Dec 2007 Location: Austin, TX Age: 45 Posts: 88	SF Twin - cracklin' My SF twin is starting to make some bad sounds. With master on 4 and vol on 4-5 I get alot of breaking up, and not in a good way... more of an AM radio kind of way. ...especially with lower and mid tones. It's been sitting idle for awhile. Just recently started using it again for gigs. Wondering if dust is the culprit, or tubes , or speakers, or???? Hasn't been re-tubed or biased since 1997. Happens more with my les paul and less with my tele. I know... get rid of the lp. Thanks, Scott

April 11th, 2008, 02:00 AM	#2 (permalink)
eddiewagner Friend of Leo's Join Date: Nov 2005 Location: ROCK!linghausen/germany Age: 49 Posts: 3,599 27 Photos	my first guess would be the tubes. sometimes stuff comes from the springtank. maybe try to disconnect it and see what´s happening. just two cents. __________________ My Drum/Guitar-Duo: www.myspace.com/captaintwangandhisrhythmcat

April 12th, 2008, 04:43 PM	#3 (permalink)
wanderingscot TDPRI Member Join Date: Dec 2007 Location: Austin, TX Age: 45 Posts: 88	Thanks. I did check to see if the tubes were loose today, but not if they were bad. Didn't even think about the reverb. I was messing with the volume /tone knobs and noticed with the master vol. on 2-3 and the channel vol. on 8-10 it was really weird. Not the overdrive you'd normally get....but a distortion with some strange overtones. If master is on 7 and vol.is say 3-4, everything is great, nice and clean.