That's part of my point , Seemed a little arrogant to dismiss the idea right away, no attempt to please the customer
after that it really irked him when I mentioned getting help from FSB ...
after a quick look , [ found an article on the Vox wah ] quite a good explanation of how a wah works circuit wise
https://www.electrosmash.com/vox-v847-analysis#link61there is a resister in parallel with the inductor, that increasing the amount causes a wider Q
in the case of the article , a 33k resister , people wanting a more " vocal " sound, increased the resistance between 33k & 100k
I'll have to check what's in the gt 500 and imagine I'll put a trimmer so I can " play with it " !