I am wanting to know what the typical frequency cut-offs are for the bass/mid/treble controls on a pre-1990s guitar amp. I want to simulate them in Java. So basically I have
bass = 20 - 250 Hz mid = 250 - 650 Hz treble = 650 - 4000 Hz
But I have no confidence in these figures. References would be great!
EDIT: Got a great algorithm from David Yeh's paper .... once you work out that the H(Z) transform is not really an algebraic expression, and how to turn it into code.