Tonepad Ross Phaser mod question

[jimbob]

I can see that acording to the schem and mod page on his web site that in order to do the vibrato mod you would basically  place a switch between before and after a 27k resistor that comes off the rc 4558 ic1. If so, is it the 27k that sits directly under the 470k on the layout pic?

BTW- thanks mark for the mods- your a mad genius

[gaussmarkov]

i would say "yes" because on one side of the 27K it is on a net with pins 1 and 2 of IC1 and on the other side that resistor is on a net with pin 6 and another 27K resistor and a 15K resistor. the switch goes between pins 1&2 and that 27K resistor so you would lift the 27K resistor lead that connects to the pad directly under the 470K resistor.   i hope this helps!

[Fp-www.Tonepad.com]

That's the one.

Fp