Hi all
I have a customer who has 68 custom vibrolux. He uses both channels, But states he would like to have the break up later.
Complete re tube has been done with all new tubes Bias is cool 60%. Changing V1 and V2 for 12AY7 was done
with Mixed results. im going to see if a 5751 might cut it , But i don't think it will please him
Looking at the map i can see that custom and vintage channels both go through V4 ( 12AX7) before on to the PI
My little brain thinks by changing V4 for a Lower gain tube Might make some changes to the break up volume
Im hoping that a few of you experts on here have done a few mods with good results
looking forward to your expert advice
Mr A
'68 Custom Vibrolux Reverb Schematic.pdf
I have a customer who has 68 custom vibrolux. He uses both channels, But states he would like to have the break up later.
Complete re tube has been done with all new tubes Bias is cool 60%. Changing V1 and V2 for 12AY7 was done
with Mixed results. im going to see if a 5751 might cut it , But i don't think it will please him
Looking at the map i can see that custom and vintage channels both go through V4 ( 12AX7) before on to the PI
My little brain thinks by changing V4 for a Lower gain tube Might make some changes to the break up volume
Im hoping that a few of you experts on here have done a few mods with good results
looking forward to your expert advice
Mr A
'68 Custom Vibrolux Reverb Schematic.pdf
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