AC30TB Vib/Trem help

[Blind Lemon]

Hey guys, I've been helping a gentlemen out who got in over his head with an AC30TB build. I've got everything straightened out except the Vib-Trem. It will not sustain, when it is turned on or off (not sure which) it will warble and fade out. Something is not set up right and I have no experience with this. He built it on Webers layout.

The rest of the amp sounds fine.

BL

[sluckey]

Hey

[Blind Lemon]

Hey Steve how you doin'.

[Blind Lemon]

Ok I got it, there was an AT7 where there should have been an AU7. Works like a champ.

BL

[Blind Lemon]

I've got to work at getting better speed range out of it though, slow end needs to be slower.

BL

[sluckey]

C29, C30, and C31 have a lot to do with frequency. Larger value = slower. Try changing C30 to 0.047µF.

[Blind Lemon]

Splitting the difference with a .022 worked about right. Thanks

BL