splitter blend, why the JFET?

[Rob Strand]

There's nothing in it really though, so it doesn't *matter*.

Once the resistors are small, that's about it.

[m_charles]

Any luck viewing it?

Yep, it's working this morning!
I adjusted it a bit for you:


You could adjust it further by replacing the phase invertor op-amp with just a plain inverting op-amp, like Rob suggested, and then the switch just chooses the output from either the buffer or the inverted version to go to the blend pot. I don't know why exactly, but it does feel simpler than this way. There's nothing in it really though, so it doesn't *matter*.

this is awesome. can't wait to build this up and report back. Thanks for taking the time to help!

[marcelomd]

If you are using 2 opamps for the phase inverter, why not something like this?