I've had my amp at one rehearsal with my 4x10 cab and love the clean side of it, I just wish the'd let me turn it UP!!!. I have the OD trimmer on the back panel so have had chance to fiddle with it a lot and I am finding I prefer it low, about 8 o'clock. I still have plenty of scope at that position to vary the amount of overdrive with the level control, but generally prefer this low aswell to give a mildly overdriven sound and I then use a pedal and the PAB to generate some additional OD.

Now my problem is that with the trimmer set very low and the level set low aswell, there is virtually no scope for a volume boost with the ratio pot. Even with this on max I don't get much increase in volume and I do want some more. So I'm wondering if there is a possibility of changing some components to alter the range of the ratio pot?

Thanks guys.

Oh BTW my OD trimmer is the 100k version and the preOD resistor is 220k. I haven't done JackZ's mods yet but am in the process of assembling the components to get them done. I've decided not to wait until I've built a 2x12 (G12-65's) on the basis that I can always change back.

Isn't the Ratio control only for the OD channel? How could you use it to turn down the clean channel?

I'd be tempted to try a different preamp tube in V2 to try and lower the gain that way so that you can run the controls slightly higher....just a thought, but I did similar in a Fender amp when I wanted to reduce the overall gain, but increase the usefullness of the drive control.

That's what you get when you don't have the amp yet and still try to give advise.

Sorry!

Where would you reckon the sweet spot is? I like it a 8o'clock but could tolerate anything up to 10o'clock I think, and might have to compromise to get the ratio where I need it.

What FP said.
Trimmer, tubes, and spkrs, usually get you where you need to go.