3 audio circuits parallel

Started by BlingFree, August 24, 2023, 06:01:04 PM

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BlingFree

I found the thread on this forum about making audio circuits run in parallel but I'm wondering if someone could how I could get three circuits to run in parallel? Is it a matter of investing phase in stages or steps till there's one signal? Please forgive my newbie speak.. For I am a newbie.


idy

#2
Welcome to the forum

You can run as many circuits in parallel as you wish, then mix them.
http://tagboardeffects.blogspot.com/2013/05/opamp-3-channel-splittermixer.html
is an example of a three channel splitter mixer.

On the question of phase: some pedals invert phase, and if you mix back with the original (or another effect) you will lose something, especially bass. With some filter effects this might be alright, but with fuzz and overdrive it is nice to avoid. Most circuit designs (that are well thought out) add an inverting stage if needed to bring things back "right side up." With a splitter/blender, it is the basic "added feature" you want to have, being able to switch the phase of one or more channel(s).

The example I gave does not have a phase inverter on it. Other examples do, but most are just two channels. As basic background, many amplifying stages invert phase. All single transistor boosters, (LPB, Rangemaster, MOSFET booster, etc.) invert. Single transistor buffers generally do not invert. Opamps you can use to amplify either inverting or non-inverting, making them very handy.

GibsonGM

#3
It's not hard to design a 'mix box' with the ability to invert the signal of each input (just a low gain amplifying stage or inverting opamp is required).  A good thing to try out either on a breadboard or in a DAW is placing the three effects in parallel and seeing just what you get at the end of it.  You might LIKE one of them out of phase, for instance.

I've found that parallel'ing 2 dirt boxes doesn't usually result in the 'sound of the Gods'.  If gain is used judiciously, you can get some different tones that are a bit more 'rich', sure.   Or dirt/chorus can result in something interesting.   What Really impresses me is splitting and using two AMPS.  There's your god-tone, live or for recording.   A hard clip on one side and OD/chorus on the other can be really BIG!  Even just different EQ or (esp.) slight delay changes things up a lot.  These ideas are well worth experimenting with; just my opinion.

3 in parallel would be easy to accomplish using a splitter and a mixer, both components which are readily available online (AMZ has a great JFET splitter that I use a lot)....mixing with opamps is a very much written about topic here and on the net!  :)

Later on, you will probably be happy you built splitter and mixer boxes, as you can use them in several other ways (like, sending 2 signals to a DAW and so on).
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