Acrobat Parametric Distortion

[leadfoot]

Build Rating

5.00 star(s)

Here is a wonderful Parametric Distortion with the mod for a volume control. The artwork was made by my daughter and I used @chongmagic 's Tayda PDF creator to get it printed. I think it turned out really well.

The hardest part was getting everything crammed in there.

 

[johnk_10]

nice! i have an original and wish that it had a master volume. is the volume conrol mod difficult?

 

[leadfoot]

nice! i have an original and wish that it had a master volume. is the volume conrol mod difficult?

On this, not at all. You just take the effect out signal and run it to pin 3 on an A100k pot, run pin 2 to the 3pdt board and pin 3 to ground.

 

[johnk_10]

On this, not at all. You just take the effect out signal and run it to pin 3 on an A100k pot, run pin 2 to the 3pdt board and pin 3 to ground.

thanks. that's what i thought.

 

[comradehoser]

On this, not at all. You just take the effect out signal and run it to pin 3 on an A100k pot, run pin 2 to the 3pdt board and pin 3 to ground.

How'd you stuff it in there? you flattened/clipped the pot tines, and ran leads to the gain and vol pots with dustcovers? I don't see the effect out cut.

 

[johnk_10]

since there's no documentation yet. which type of rotary switch does it use?
this one? :
https://www.taydaelectronics.com/rotary-switch-2-pole-6-position-alpha-sr2612f.html (Break before make)
or this one?"
https://www.taydaelectronics.com/mini-rotary-switch-2-pole-5-position-alpha-sr2612f-18mm.html shorting (Make before break )

 

[leadfoot]

For the volume, this is how I wired it.



I used 9mm pots with straight tines since they're already plastic on the bottom.

 

[johnk_10]

I'm assuming that it's the break before make rotary switch.

 

[comradehoser]

I'm assuming that it's the break before make rotary switch.

I can check for you when I get home. I think there might be some info on it from Robert if you sift through the forum. There definitely is about the switching jack, but it's useless because you need a special expression pedal. With a dual gang pot, I believe.

 

[comradehoser]

might be a hint here:

https://docs.pedalpcb.com/project/Schematic-Acrobat.png

 

[leadfoot]

I'm assuming that it's the break before make rotary switch.

This is the alpha one I used: SR2611F

Rotary Switch 2 Pole 6 Position ALPHA SR2611F

ALPHA - Get It Fast - Same Day Shipping

www.taydaelectronics.com

 

[Robert]

That's the one.

It's a 2P6T rotary with the stop washer set to limit it to 5 positions.

 

[OD is Glorious]

Nice build

 

[johnk_10]

That's the one.

It's a 2P6T rotary with the stop washer set to limit it to 5 positions.

thanks!

 

[johnk_10]

build doc coming any time soon? i'd like to see a drill template for the enclosure.

 

[leadfoot]

build doc coming any time soon? i'd like to see a drill template for the enclosure.

Drill template is here

 

[johnk_10]

Drill template is here

thanks so much!

 

[johnk_10]

building the pcb right now. unfortunately i don't have any 1K6 reistors so i had to order them. i was almost thinking of substituting 1K5's for the two of them since they're on the expession jack but i'm not sure if that would be acceptable.

 

[leadfoot]

I don't think you'd have an issue with 1k5 instead of 1k6. 100 ohms isn't going to alter much of anything.

 

[johnk_10]

i agree.