CGS VCO from BRIDECHAMBER urgent ques

druish · Joined: Jun 23, 2009 Posts: 91 Location: New Paltz NY

does anybody know where the tri/sin input goes on the board? This is an xtra feature put on by bridchamber and i cant figure out where it goes from the cgs shematic.

andrewF · Posted: Fri Sep 18, 2009 7:27 am Post subject:

Have you tried asking Bridechamber?
Is the Bridechamber PCB the same as the CGS version? - Are there any extra inputs/outputs marked on the PCB?

The sine/tri section is in the upper right section of the PCB.
Posted Image, might have been reduced in size. Click Image to view fullscreen.

Posted Image, might have been reduced in size. Click Image to view fullscreen.

druish · Joined: Jun 23, 2009 Posts: 91 Location: New Paltz NY

Yes, Scott Deyo from Bridechamber has informed me that the Tri/sin in and associated pot replace the WS Trim on the board as follows: Switch Lug of the Jack goes to the top of hole of the trim (where pin 1 of the TL072 is going on the schematic). The Hot Lug of the Jack goes to the CW Lug of the tri/sin pot. The CCW Lug of the pot goes to the bottom Trimpot hole (or ground). The Wiper Lug of the Pot goes to the middle Trimpot hole. This way, when nothing is in the jack you have front panel control over the shape behavior in addition to controlling the shape. AND you can overdrive the input with the pot as well as feed anykind of waveform into the tri/sin jack and see what happens! Super cool idea, I cant wait to test it out. Bridechamber is good with the mods but I just wish they would include some sort of documentaion with their kits because i'm always having to figure their modifications out on my own. Good stuff tho.