DEMO Further Into the Unknown(Updated w/ more demos)

[DGWVI]

EDIT - see Post #20 for more demos



A Parasit Studio Into the Unknown board with a few hacks.
The big rotary selects which output of the PLL is sent to the mix knob-
Position 1 is the stock Squarewave from pins 3&4
Position 2 pulls a Pulse wave from pin 1
Position 3 is also a pulse wave, but an octave higher as dictated by the timing cap. This is pin 2
Position 4 is a saw wave from pin 7
Position 5 comes off of pin 13, not sure what I'd call it

The smaller rotary switch selects the timing cap between pins 6 and 7, from 100pf to 100n. This changes how the VCO responds to the input

There is also an additional 33n cap coming off of the PLL side of R5 that connects to ground. This helps to reign in the tracking so a wider variety of pickups can be reliably used

The extra pot is a 25kB in place of R6, similar to the lag control found on the Schumann



Still need to get it stamped and knobbed, and will be doing a much better and more comprehensive demo tomorrow when I get home.

 

[steviejr92]

At certain points in the demo you can travel back in time to 1999 and hear AOL dialup
Love the demo this thing is gnarly!
Awesome enclosure too!

 

[DGWVI]

At certain points in the demo you can travel back in time to 1999 and hear AOL dialup
Love the demo this thing is gnarly!
Awesome enclosure too!

It's a bad ass circuit to begin with, but these mods definitely add something special

 

[steviejr92]

I’m really liking the rough look to the enclosure like it’s been beaten up a bit

 

[DGWVI]

I’m really liking the rough look to the enclosure like it’s been beaten up a bit

It's reclaimed steel. We try to keep the pitting other weathering intact

 

[steviejr92]

I think it looks great! Can you point me in the right direction to getting one?

 

[DGWVI]

I think it looks great! Can you point me in the right direction to getting one?

My fabricator buddy is inundated at work, but I have a few on hand I could stand to part with

 

[steviejr92]

Going to pm you

 

[Betty Wont]

I love this circuit, and the mods are fantastic! I'm into this fully.

 

[DGWVI]

I love this circuit, and the mods are fantastic! I'm into this fully.

They're all fairly simple, but I'm gonna try to work up the motivation get a schematic drawn up.

 

[Diynot]

Hot damn, that is some cool af PLL goodness. I might have to put at least one more hole in my recent ITU build. Might have to suffice with a 1pt8 switch since that’s what I have on hand and probably all that I can squeeze into the bb box.

 

[DGWVI]

Hot damn, that is some cool af PLL goodness. I might have to put at least one more hole in my recent ITU build. Might have to suffice with a 1pt8 switch since that’s what I have on hand and probably all that I can squeeze into the bb box.

Lemme look at the schematic again, and see if we might be able to get three more outputs from it

 

[Bricksnbeatles]

Lemme look at the schematic again, and see if we might be able to get three more outputs from it

I thought even the mini rotary switches had tabs to limit the number of clicks, if only 5 are needed. That said, 8 > 5, and MOAAAR is always better!

 

[steviejr92]

I thought even the mini rotary switches had tabs to limit the number of clicks, if only 5 are needed. That said, 8 > 5, and MOAAAR is always better!

I thought the tabs were standard in all rotary switches. Am i mistaken?

 

[Bricksnbeatles]

I thought the tabs were standard in all rotary switches. Am i mistaken?

that was my thought too. It's been a while since I used one of the tiny ones though, so I may be mistaken

 

[DGWVI]

The minis do not have the tabs. At least none that I've ever used

 

[steviejr92]

Now that you mention it, I've never bought or even used one of those tiny ones.

The minis do not have the tabs. At least none that I've ever used

Well that answers that.

 

[Diynot]

Can you run 2 waveforms at once? Might leave off the octave up PE.

 

[DGWVI]

Can you run 2 waveforms at once? Might leave off the octave up PE.

You can, but they have different volumes, so you'd have to play around with mixing them. They're pretty much all louder than the pins 3/4 output

Looks like pin 10 can also be used as an output, I will play with that in a bit

 

[DGWVI]

Here's a few more vids. Each one focusing on a specific output pin of the 4046, with a healthy dose of knob twiddling. I generally left the Fuzz and Sub dialed out so that the VCO sounds were on full display. I also added the output of pin 10. It's not terribly useful, and could use a booster to up it's output gain
Square wave (pin 4)

Pulse 1 (pin 1)

Pulse 2 (pin 2)

Saw (pin 7)

Mix (pin 13)