Where's the bias adjustment on the Laney TT50??

[napalmdeath]

Before I tear into this thing, I was hoping someone could tell me if the bias adjustment/trim pot is easily accessible?? I'd like to swap the power tubes, and bias with a JJ bias proble, and mulitmeter - both of which I have. I'm looking to drop in SED's.

I've done several Marshalls, and Peaveys, but nver a Laney.

 

[napalmdeath]

bump.

 

[blackba]

On the Laney Vh100r I used to have, you had to pull the chassis to get to the bias pot, I bet the TT50 is the same way. When I switched from 6L6's to EL34's, and flipped the bias switch, I found the bias on the EL34's was way off, it really needed to be adjusted.

 

[D-Rock]

Not sure, I just put two EH EL34's in my GH50L and didn't bias it.
Sounds great !

 

[PlinytheWelder]

All the Laney's I have had a bias trimpot on the circuit board , but I always install an external pot on mine....