I have a real love/hate thing going piezos. My Genz 112T cab doesn't have a tweeter level adjustment but it does have an extra 1/4" jack I'll never use. It would be great if I could remove one of the 1/4" input jacks and put an adjustment pot in its place. Anyone ever done that? Presumably one needs a pot that can drop some appreciable wattage. Heck, maybe I should just sell the cab. It's pretty strident sounding.