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  1. #1
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    Default Could this work?

    It's possible that this has been tried, but even if not, I can't be the first guy to have thunk it up.....

    So, we know that the D-style OD is architected such that the clean channel cascades into the OD channel, right? What if, instead, a portion of the clean signal were sent to the OD path, much like reverb, or a parallel loop, and then mixed back in with the clean signal? Would that provide more delicate control over the final OD character?

    I wonder if that's what sly old Dr. D actually did. Even in YouTube clips, you can hear the pick attack just like a clean channel, and just when you think it really is the clean channel, you hear the "hair" that follows.....know what I mean?

    I bet the good Captain will edumacate me...:)

    Srini

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    I guess it's possible...although feeding an amplified signal back into the amp's input requires a degree of electronics know-how (i.e. do not do this at home Folks!).

    However, it would be easier to use an ABY pedal and use two amps - one clean and one overdriven and just blend the two.
    I'm a riddle, wrapped in a mystery, inside an enigma.

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    Srini (01-21-2015)

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    Default

    Definitely a lot more know-how than I'd acquire in this life time. But its possible I misstated my original approach - I meant feeding the OD back to where it would meet the clean signal, not back into the amp input. This I guess would be exactly what one would do wih a parallel loop, right? Right now, its like a series loop, where the complete signal goes into OD.

    Two amps is best, of course!

    Maybe this is worse than Kramer's oil tanker bladder invention...

    Srini

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    Default

    Ya mean like the Voodoo Lab Sparkle Drive?



    I've got one of these and it works great. It splits the signal internally, lets you dial in the amount of overdrive that you want, and then dial back into the signal the amount of the clean tone that you want. With the Gain low and the Clean turned up, you get your basic clean boost. Then with the Gain higher and the Clean rolled back some, you get an overdriven tone with some of the clean tone still there. It's a great little pedal.
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    Default

    Thats exactly what I was thinking about, Stan. I knew it had to be an old idea! But I wonder if they've tried that concept in a tube amp, and I seriously wonder whether the D-Man wasn't doing it himself. Maybe I'm reading too much into this, but if you look at the OD controls on most original ODS amps, they say Gain (or Drive) and Ratio. They claim that Ratio lets you set the relative volumes between clean and OD and that makes sense, but could it also be setting the ration of cleanness to meannes??? One of the things he gooped, I guess.

    Srini

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    Default

    I'm not engineer but seems interesting.


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    Default

    Quote Originally Posted by Littlefloor View Post
    I'm not engineer but seems interesting.
    So, I guess you'd need a driver tube, a gain tube and a return mix tube.....that's three instead of one. Maybe that's why it's not done...hmmmmm

    Srini

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    Question A or B

    Quote Originally Posted by Srini View Post
    It's possible that this has been tried, but even if not, I can't be the first guy to have thunk it up.....

    So, we know that the D-style OD is architected such that the clean channel cascades into the OD channel, right? What if, instead, a portion of the clean signal were sent to the OD path, much like reverb, or a parallel loop, and then mixed back in with the clean signal? Would that provide more delicate control over the final OD character?
    ...
    Honestly speaking, I made similar thing with A and B channel on Boss GT 10: on A is Recto Modern and on B is Vintage amp, mixed them (play both channel together) I got very nice and rich sound, is that what you planned?


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    In principle, yes, but with an all tube amp, implementing the OD channel differently.

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    If I have this wired correctly in my head, I think you're going to need two pre-amps. One cleaner pre-amp circuit feeding a clean signal to the power amp and another dirty pre-amp channel in parallel feeding the same power amp. Problem is, your OD is going to then be pre-amp based, so not the best breakup tone to some ears.
    I'm a riddle, wrapped in a mystery, inside an enigma.

 

 

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