j.pagejr.
stiff
Join date: Jun 2007
214 IQ
#1
Like it says...I rebiased my amp yesterday and played with my band last night -all was well. Plugged it in today and I can hear my guitar when the volume is all the way down to 1. What the hells that mean??
cheers betch
Cathbard
Grumpy Old Tech
Join date: Oct 2009
2,565 IQ
#2
It's just the way the amp's designed. It just means that when turned right down there isn't a complete short to ground on the grid of the associated tube. It can happen sometimes when you have a dodgey pot or it could just be the way it is.
Gilchrist custom
Yamaha SBG500
Telecasters
Randall RM100 & RM20
Marshall JTM45 clone
Marshall JCM900 4102 (modded)
Marshall 18W clone
Fender 5F1 Champ clone
Atomic Amplifire
Marshall 1960A
Boss GT-100


Cathbard Amplification
My band
j.pagejr.
stiff
Join date: Jun 2007
214 IQ
#3
Would that sound familiar if it was a '73 super reverb? Don't remember this happening before I rebiased the amp. - as in before yesterday
cheers betch
Cathbard
Grumpy Old Tech
Join date: Oct 2009
2,565 IQ
#4
On a Super the signal should be taken directly to ground at the grid of V1b so you really shouldn't hear anything. Sounds like the pot is on the way out. I'd replace it before it gives you real problems.
Gilchrist custom
Yamaha SBG500
Telecasters
Randall RM100 & RM20
Marshall JTM45 clone
Marshall JCM900 4102 (modded)
Marshall 18W clone
Fender 5F1 Champ clone
Atomic Amplifire
Marshall 1960A
Boss GT-100


Cathbard Amplification
My band
Zan595
had something for this.
Join date: May 2008
1,063 IQ
#5
My 6505+ does that, as does my friend's Triple X. I always assumed it was just normal in some amps.
667
The Neighbor of the Beast
Join date: Jun 2008
930 IQ
#6
I can hear my guitar when is not even plugged into my amp.