Blend Knob for Promethium?

[sshort86]

Thinking about building a Promethium, but I don't love the full on hm-2 sound. How difficult would it be to add a wet/dry blend knob? Has anyone done this?

 

[Nostradoomus]

Alec at MAE has a board that works well here

Utility Blender

Small JFET blender that be incorporated into most builds. Build Doc

maskaudioelectronics.com

He also has the HMTone pcb that blends the sound in for you, I've used it to add on to quite a few builds and it's great. DM him for the spawn of hmtone board, it's even smaller.

 

[jesuscrisp]

No need to add another 2 buffers to a build that already has input and output buffers...

Add a capacitor into lug 3 of a 100K pot here:


... and connect a cap from lug 2 here:


Lug 1 goes to ground.


ALTERNATIVELY, you can make a "faux EQ blend" by replacing R29 here with a pot, e.g. A5K:

This will only affect the EQ intensity, not the gain though.

 

[sshort86]

Alec at MAE has a board that works well here

Utility Blender

Small JFET blender that be incorporated into most builds. Build Doc

maskaudioelectronics.com

He also has the HMTone pcb that blends the sound in for you, I've used it to add on to quite a few builds and it's great. DM him for the spawn of hmtone board, it's even smaller.

Oooh...the HMTone looks similar to the Dunn Effects Death Knob. I may go this route instead, as I was planning on running the HM-2 with distortion at zero anyway. Thanks!