I have a 1969 Sorado head that I am using for bass and I think I need to recap it.
With the volume on 7 and the bass boost and treble boost on, the treble set at 5 and the bass set at 5 it sounds good, but if i raise the volume to 7.5 or above the amp distorts only when I play the low E string, anywhere on the neck. I can still get plenty of more volume out of the head but it is distorted.
I am using a Fender Precision bass full volume. I replaced the 6550 power tubes (Tung-Sol) and had the amp biased. I also replaced the 6AN8.
Could the 12AX7 tube cause this problem.
I am using s Sunn 215 1969 Sorado speaker cabinet with 2 JBL K-140 speakers. They sound great no matter what amp head I use with them (GK 700RBII, Acoustic 370, Acoustic 150, GK 400RB, Kustom 200B).
Does anyone have a list of all the capacitors and or resistors that I will need to buy to do this. It would sure make my life easier, and I could get back to rockin with my Sorado.
Thank You,
Zulubilly