Quote from: danV on February 04, 2009, 02:32:15 AM
Thanks for the replies, and sorry for answering a bit late ...
anyway, the opamps are 2 TL074 and a TL072. You can use other ones, such as the TL06x or the TL08x.
I recorded a few other samples, sorry for the uninspired / bad playing:
- Here for a Voxxy style.
- Here for the 2ns solo of Comfortably Numb (delay was added through Audacity).
I also did a new version of the schematics, since there were 2 mistakes in the component values:Here
Now I'm working on a tutorial, and I hope to receive my PCBs soon. I have also decided to make a full opamp version, in order to avoid the biasing and selecting of the JFETs, and enable more PSU flexibility, mostly for switching in multi-channel configurations.
I have a question for you - I noticed your schematic and the one BSIAB2 are identical near the 5th JFET (2N5457) trimpot. I also noted that your board artwork has the center wiper tied to +9V leg of the pot instead of the leg going to the JFET. Probably not much difference, but did it have an impact on the JFET bias voltage?