Greetings from Austin TX. Just found this place a few days ago looking for (and finding) a schematic for my SVT-II.
I play bass for a living with The Mother Truckers. My low end arsenal:
2002 USA P-bass w/SD Quarter Pounder
Late-70's Ampeg SVT
'93 Ampeg SVT-II (non pro, all tube)
Fender TB-600
Acoustic B200H
Ampeg Isovent cab
Boss TU-2
DIY modded Big Muff Pi clone
Phase 90
Dunlop Bass Wah
http://www.myspace.com/dannygrocks