Dual Blender w/ Feedback and Filters idea

[jacmac]

Hey Guys,

Working on an idea here and need a ton of help/ guidance.

http://www.aronnelson.com/gallery/main.php?g2_view=core.DownloadItem&g2_itemId=52286&g2_GALLERYSID=68db34193094b4ee12bfcd752b8b26e8

Overview of ideas:

1. Standard INPUT feeds circuit and BYPASS switch
2. Signal is duplicated to feed MASTER DRY BLEND and FX INPUT.
3. Signal is sent to MAIN DRY BUFFER and mixed with feedback from output.
4. Signal is sent to a MICPRE transformer. This has a very pleasing effect on some guitars that can handle the level drop.
5. Option to BYPASS the TRX.
6. Option to assign it to the MAIN INPUT stream or the FX1 / FX2 output.
7. FX1 / FX2 SND / RTN circuits with the ability to BLEND the local FX with a local DRY signal. (R.G. Keen "Panning for fun.")
8. FX1 / FX2 local BYPASS.
9. LPF / HPF (Elliott Sound Projects 155)
10. MASTER WET / DRY BLEND
11. OUTPUT.

I'm VERY new to all this, so expect some serious over-sites/issues.

[antonis]

 
I'm dizzy enough to follow WET - DRY phase compliance..


Wellcome...!!! 

[jacmac]

Yes! Phase was fun to try to get right... I think I did.

The phase is flipped going out, bu then flipped coming back in. Problem?

[garcho]

The phase is flipped going out, bu then flipped coming back in. Problem?

as long as it's flipped back in phase with the dry signal before they're combined. if any of those FX are 180° out of phase with your dry signal, things can get wonky, regardless of your design.

[jacmac]

The phase is flipped going out, bu then flipped coming back in. Problem?

as long as it's flipped back in phase with the dry signal before they're combined. if any of those FX are 180° out of phase with your dry signal, things can get wonky, regardless of your design.

Yes, that part I understand! 

[garcho]

relative to all that stuff going on it wouldn't be too hard to just throw in a few inverting buffers wired through switches, one for each channel

[blackieNYC]

Look at the geofex polarity inverter. It is also incorporated into the runoffgroove splitter blender.

I've built something like what you are looking for, with way too many features but the schematic is worth a look. I'll find it somewhere.  This one doesn't have my simple, bypassable RC filters at sends A and B. Each has two toggle switches - one HP and one LP.  I can darken the sound of a delay, or send highs to one fuzz and lows to another, inasmuch as a single pole filter can separate them.

disregard the FB stuff circled.  use whatever buffer or booster up front. the mixer op amp has make up gain, and a following op amp stage with gain control that I can stomp for a post-everything boost. very happy with it.