Two Pedals - One Box - Master Volume - asking the impossible

Putting two effects in one box almost looks too easy, but you will save a lot of time reading the frequent questions before starting such a project...
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poodlebra
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Post by poodlebra »

I've put together a twin version of a 'Great Destroyer', utilising both sides of the chip. it's effectively two pedals in one box, each TGD having it's own 3pdt footswitch wired as true bypass with grounded input (as detailed at GGG).

what i wanted to do, which sounded so simple in my head, was add an overall master volume to this monstrous device, as each TGD churns out a mammoth amount of signal, and the volume control on each one really makes a difference to the oscillation, not just volume.

however, now i'm sitting with a drilled box, circuit, many pots and a hot soldering iron, i've just realised i have no idea how to do this. any ideas?

i did think a dual gang 500k, one on each of the outputs, would do it, but that's a bit of a compromise, as it'll effect how much goes into circuit two from circuit one, again altering the overall sound.

any ideas greatly appreciated, or do i just resign myself to grommeting the hole i drilled for master volume?
Double-D.jpg
(input 2 goes to left of cap - should fix this on diagram!)

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Hides-His-Eyes
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Post by Hides-His-Eyes »

You could set up one switch for "BP/on" and the other one for "one/two"; that would do it?
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poodlebra
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Post by poodlebra »

not if i want one and two on together :cry:

i want to have it in any of these states: bypass / one only / two only / one and two (output of one feeds input of two)

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Hides-His-Eyes
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Post by Hides-His-Eyes »

poodlebra wrote:not if i want one and two on together :cry:

i want to have it in any of these states: bypass / one only / two only / one and two (output of one feeds input of two)
You can have A/B or A/A+B with two switches and a master volume, but otherwise the only solutions I can think of include relays.
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poodlebra
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Post by poodlebra »

i think i'll just go with the dual gang pot. it'll probably sit in a box unused anyway, i was just thought i'd check as it's pretty much the first thing i've come across in the year i've been fiddling with this stuff that i couldn't see a solution to. thanks though.

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Post by scuzzphut »

Couldn't you just put the master volume pot after the second switch but before the output jack ? It would affect everything leaving the pedal and would only need a single gang pot.

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poodlebra
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Post by poodlebra »

you'd then be adding a volume control to any bypass signal too.

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