I'm working on a rig that captures the Wes Montgomery sound, so I read up on him. He was apparently very simple when it came to gear. One source (http://www.jazzguitar.be/wes_montgomery_guitar.html) says he used a Fender Twin Reverb toward the end of his life, and that is the sound I am after. Basically this sound:



I've gotten pretty close, but one thing I notice (and please remember I have very little knowledge about gear so this may sound dumb! ) is when I change the controls for Speed and Intensity, I cannot notice any difference in sound.

I don't seem to need them but was wondering what they are supposed to do.

Thanks!