thunderaxe
New member
hi all,
i'm interested in the idea of adding a clean blend to an existing distortion effect, and i'm wondering if it's possible to also use it as a switchable buffered bypass option.
with the help of this very useful tutorial by @jesuscrisp:
i feel pretty certain that i'm going to go with a dual op-amp buffer and active blend setup, though i'm not sure yet if i'll be doing one that goes from 100% dry to 100% wet version, or just the purely additive one. i do have some questions for the forum though:
1) are there particular advantages and disadvantages to placing the input buffer before or after the split? should i buffer the input right off the bat and then split passively into clean and distorted paths, or split first and then have the clean path alone have a unity gain op amp buffer? the first stage in the distortion circuit is a non-inverting op amp boost of +10.4dB with a 15hz high pass, which should serve as the buffer for that path.
2) the way i envision doing the buffered bypass -- and if there's a better way of doing this please let me know -- is to have the 3PDT stomp switch still switch between on and bypassed, but a second toggle switch changes whether the bypass path is true bypass, or send the signal back into the effect, and then out the end of the clean blend path before the clean/distorted mixing section. the question for me is whether it's possible to get an isolated clean signal to the output through this method without the distorted signal "leaking" backwards through the mixer and into the clean signal. i've attached some crude concept diagrams of the switching scheme that will hopefully make my idea clear.
i'm interested in the idea of adding a clean blend to an existing distortion effect, and i'm wondering if it's possible to also use it as a switchable buffered bypass option.
with the help of this very useful tutorial by @jesuscrisp:
Since there have been a couple of threads on the topic of "I want to do this pedal but with a clean blend" and "I want to blend two circuits" and I don't want to repeat myself all the time, here is a bit about clean blends. I have zero electronics background, am a self-taught pedal nerd and won't be able to answer ALL technical questions they arise. I am more of a f*ck-around-and-figure-it-out guy who loves to keep things reasonably simple, but also loves if things are engineered nicely.
So that being said, this is how to blend...
1. Buff n Blend
The...
So that being said, this is how to blend...
1. Buff n Blend
The...
i feel pretty certain that i'm going to go with a dual op-amp buffer and active blend setup, though i'm not sure yet if i'll be doing one that goes from 100% dry to 100% wet version, or just the purely additive one. i do have some questions for the forum though:
1) are there particular advantages and disadvantages to placing the input buffer before or after the split? should i buffer the input right off the bat and then split passively into clean and distorted paths, or split first and then have the clean path alone have a unity gain op amp buffer? the first stage in the distortion circuit is a non-inverting op amp boost of +10.4dB with a 15hz high pass, which should serve as the buffer for that path.
2) the way i envision doing the buffered bypass -- and if there's a better way of doing this please let me know -- is to have the 3PDT stomp switch still switch between on and bypassed, but a second toggle switch changes whether the bypass path is true bypass, or send the signal back into the effect, and then out the end of the clean blend path before the clean/distorted mixing section. the question for me is whether it's possible to get an isolated clean signal to the output through this method without the distorted signal "leaking" backwards through the mixer and into the clean signal. i've attached some crude concept diagrams of the switching scheme that will hopefully make my idea clear.
