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Schumann PLL

#64
fightthepower said:
Seeing you play (fingers/pick) and turning the knobs really helped me wrap my head around the pedal, cool video!
Click to expand...

That really was the first time I used it, so I had no idea what was happening. I'll be doing some more detailed demos.

pll_front_controls.jpg


The controls are really a lot easier than they appear at first glance.

The PLL has three functions:
  • Square Wave (fuzz)
  • Multiplier (Octave up)
  • Divider (Octave Down)

These are represented on the right side of the device as individual volume knobs (mix levels) and a master volume. Each channel has a tuning knob, the two big knobs in the middle are for Multiplier and Divider setup and there is a small wave shape knob to tune the fuzz.

On the left, Pre-amp is 'signal in strength' and affects tracking. Trigger can be considered a Gate knob.

A couple of phase inversion switches (for the Multiplier and Divider) signals.

Lag time, Response, Loop Track, and Loop Speed impact the tracking in various (not fully understood at this time).
 
#65
grygrx said:
That really was the first time I used it, so I had no idea what was happening. I'll be doing some more detailed demos.

pll_front_controls.jpg


The controls are really a lot easier than they appear at first glance.

The PLL has three functions:
  • Square Wave (fuzz)
  • Multiplier (Octave up)
  • Divider (Octave Down)

These are represented on the right side of the device as individual volume knobs (mix levels) and a master volume. Each channel has a tuning knob, the two big knobs in the middle are for Multiplier and Divider setup and there is a small wave shape knob to tune the fuzz.

On the left, Pre-amp is 'signal in strength' and affects tracking. Trigger can be considered a Gate knob.

A couple of phase inversion switches (for the Multiplier and Divider) signals.

Lag time, Response, Loop Track, and Loop Speed impact the tracking in various (not fully understood at this time).
Click to expand...

this may be one of the best things i've ever seen and heard! thanks for the clips.

schumann was truely a genius, i'd think twice before reverse engineering this without his permission.
 
#67
grygrx said:
I laughed hysterically at least a dozen times while messing with it. There is certainly nothing quite like it that I've tried.
Click to expand...

That was actually the most entertaining part of the video for me - the times you stopped playing and just burst out laughing. That and the "oh ****" at the very end.

Clearly living up to your expectations so far, eh?
 
#70
Mr. Pickles said:
I don't think you could reverse engineer this one. Looks like there are some IC chips in there and you'd need to figure out how the hell they were programmed...
Click to expand...

I wouldn't want to reverse engineer it (I wouldn't want anyone else to try either). I think it should remain as the holy grail of effects pedals.

Who knows, John might start building again if enough people pester him...or perhaps not :bawl:.

I really want one :hmm:...not good.
 
#71
Jared Lash said:
That was actually the most entertaining part of the video for me - the times you stopped playing and just burst out laughing. That and the "oh ****" at the very end.

Clearly living up to your expectations so far, eh?
Click to expand...

I'm very pleased after Day 1. I was braced for some serious letdown, but its not happening yet. I'm sad it was soo much $ and took soo long to locate. I'm sad that I'd be afraid to leave the house with it. I'm sad that I don't have the drone attachment. I'm sad the momentary switch attachment is partly broken. I'm glad that the momentary switch works at all because I was told it was broken. I'm sad that the power barrel and plug are mismatched and the power will flake out if you move it the wrong way (again, known problem).
 
#72
grygrx said:
I'm very pleased after Day 1. I was braced for some serious letdown, but its not happening yet. I'm sad it was soo much $ and took soo long to locate. I'm sad that I'd be afraid to leave the house with it. I'm sad that I don't have the drone attachment. I'm sad the momentary switch attachment is partly broken. I'm glad that the momentary switch works at all because I was told it was broken. I'm sad that the power barrel and plug are mismatched and the power will flake out if you move it the wrong way (again, known problem).
Click to expand...

*hug*
 
#74
Mr. Pickles said:
I don't think you could reverse engineer this one. Looks like there are some IC chips in there and you'd need to figure out how the hell they were programmed...
Click to expand...

Just because they are ICs doesn't mean they are programmed. Mostly like they are analog bugs that generate the square wave, multiplier and divider functions (and probably some op-amps as well). If that's the case it would be easy to reverse engineer (as long as you can find the part numbers of the ICs). I have a feeling that circuit looks more difficult than it really because of all the switches and pots.
 
#75
MAMMOTHvolume said:
this may be one of the best things i've ever seen and heard! thanks for the clips.

schumann was truely a genius, i'd think twice before reverse engineering this without his permission.
Click to expand...

I doubt he'd care or that you'd even be able to get a hold of him at this point. He stopped answering emails years ago, and stopped making and selling them altogether. If he made a new batch of them and any of the Lion pedals, he could easily sell them for triple to quadruple what he was asking for them before, but still chooses not to.
 
#76
Bryan R. Tyler said:
I doubt he'd care or that you'd even be able to get a hold of him at this point. He stopped answering emails years ago, and stopped making and selling them altogether. If he made a new batch of them and any of the Lion pedals, he could easily sell them for triple to quadruple what he was asking for them before, but still chooses not to.
Click to expand...

It's such a shame but it's his decision. I guess he's just moved on in life which is fair enough really. Wherever he is, whatever he's doing, I wish him the best :).
 

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