<HTML><BODY style="word-wrap: break-word; -khtml-nbsp-mode: space; -khtml-line-break: after-white-space; "><BR><DIV><DIV>On May 1, 2006, at 3:46 PM, René Schmitz wrote:</DIV><BR class="Apple-interchange-newline"><BLOCKQUOTE type="cite"><P style="margin: 0.0px 0.0px 0.0px 0.0px; font: 12.0px Helvetica; min-height: 14.0px"><BR></P> <BLOCKQUOTE type="cite"><P style="margin: 0.0px 0.0px 0.0px 10.0px"><FONT face="Helvetica" size="3" style="font: 12.0px Helvetica">They put in a switch to give the user the option of using a knob or using a control voltage to control the mix. The CV input on the mix doesn't seem to give the same dramatic change as the pot does, but you do hear a change as the CV mix input is swept.</FONT></P> </BLOCKQUOTE></BLOCKQUOTE></DIV><BR><DIV>I don't know why your CV-controlled mix isn't as dramatic as the pot. However, in my opinion, voltage controlled wet/dry mix will not be a very musically useful parameter. At least on a phaser -- it simply will not yield very dramatic sonic results. It won't be very dramatic, regardless of how you control it. That's one of the reasons most phasers don't have any means for the user to control the wet/dry mix -- they just internally set it at 50/50, because that's what usually works best to most people's ears. In my opinion, a much more satisfying parameter would be voltage-controlled resonance (or feedback). It appears, though, that your initial design doesn't include any feedback/resonance circuitry. It would certainly be easy to add, and would make a *huge* difference in the sound of the phaser. You should try it -- it won't take much more than another pot and a couple of resistors to hear how it sounds. Voltage control of resonance could probably be done either with vactrols or with an OTA.</DIV><DIV><BR class="khtml-block-placeholder"></DIV><DIV>I will admit, though, that as a technical exercise, voltage controlled mix is probably a worthwhile challenge.</DIV></BODY></HTML>