To my XP the clipping is extremely expremely dependant on the type and hotness of the input signal. i thought for long mine was broken till one day i realized “how” it works.
experiment with it and hang in there… it was sugested in here to run the input trought #1171OBA… the helped me too
(update:oba)
so if the signal is hot enough does it actually clip/distort the signal?
It clips the sound 
It is kind of a saturation, it makes the signal sound a bit more harsh. But it is more obvious on soft input signal, like triangle wave.
Makes sense! I presumed it was actual clipping but then I thought that no audio is actually passing through it so was confused how it was clipping. So you are saying that because the LFO signal is clipping it then passes that onto whatever it is routed to? New to all this so learning as I go
Not sure why you mention the LFO, so I am confused now. The signal is not routed differently depending on what you plug into the module. The effect and output signal (sound) is modified based on the CV inputs, with an LFO typically (or an envelope).
Sorry ignore me, responded to the wrong thread!
Gonna send in something hot to try and hear some decent clipping.
Cheers dude
Me again team, what exactly is the vcacv for on this module? Not sure I fully understand its function.
Had a look on the beginners guide page but the filter that is talked about there is the performance one and I don’t think it has this control
It turns up the the volume, basically. If the VCA knob is already turned all the way up, it will have less of an effect. It is attenuated by the LVL knob.
So you can plug an envelope generator directly into that?
Yes you can “open” any CV IN with an EG, an LFO even a VCO, all voltage sources in fact 
some vid here maybe can help you
and maybe this too
Thanks for this, will check them out for sure.
HP filter on the Perf Filter is amazing when used in conjunction parallel with a Ladder Filter Lowpass
Built my GRRRR last night and populated it and installed it in the box. No bench test test as per my personal hubris, just right into the system. The smell of crispy fried 10ohm resistors after a minute or so.
Fearing a rookie move on my part I triple checked everything after removing the fried 10ohm pair.
Nope. No rookie mistakes. Measured voltage rail impedance to ground and got 5.4 ohms. Pulled the LM13700.s and rails went to ‘normal’ approx 50k Fired it up in that state (10ohm pair replaced) and all was well with the 12v rails.
Okay… the LM13700’s were trashed. Tried another pair from the same lot on the bench but this time I measured the rails. Totally off and pulling it down on both sides. Another crap pair.
This time I installed a pair of LM13700’s from a different manufacturer and lot. These worked just fine with no weird voltage issues and everything measured nominal. Current draw at 13 to 15ma per pole when fully operating.
Long story short: these cheapo Chinese LM13700’s I bought on eBay just don’t make the cut and cause some serious problems!!!
It’s in the System now and GRRRRRRing away delightfully
I almost never buy ICs on eBay or AliExpress; if you do, definitely test them first. There’s just too much bad crap out there and some of it can damage your build.
A real shame the DIP LM13700 is getting so hard to buy otherwise. Thonk and Amplified Parts have them though.
Yep. I already had 6 in stock of the good variety and bought these other 10 on a lark. oh, well … it was worth a fiery try.
i have a question for the 1114 using community: I recently finished a microdexed touch module and noticed crackling sound while using it. first i thought the new module it self was the source becausse using its encoders and screen changes were corresponding to the crackling. I later located the actual source of the “noise” was the 1114 F-GRRR…
i should also mention that the 1114 was one of my first soldering jobs it might not be up to spec… it did not causse any problems before and sounds / affects input as it should other wise
any suggestions?
Excellent Question
Sam? Chris?
OK
I feed a sine wave into the Attenuvert CV Input…used a high resonance for a tone from the filter and monitored the output
Set the dial at 12 noon
I adjusted the trimmer until no pitch change could be heard.
Moved dial right and left to verify results - saw the LED change with it.
Tweak tweak done.
the EAR method is easier and IMHO just as definitive sometimes.
So the crackling also appears when there is no input on the filter? My guess is that the microdexed causes some digital noise on the power supply which then affects the filter. You could measure the power supply with a oscilloscope to confirm and then think of something to prevent this. Some more caps on the microdexed could help, maybe a small inductance…
