freestompboxes.org

asbestosaurus

before swapping out a whole potentiometer, first try tacking a 15k (for a 100k pot) resistor from the volume pot wiper to lug 1 (ground in this case) it's a sneaky way of tapering a variable voltage divider that will give you about 19% of the input level at half of the sweep. check out The Secret Li...

asbestosaurus

mirosol wrote: ↑22 Nov 2022, 11:02 Tried 470R for R6 and the circuit sounds pretty close to youtube demos i've found.
+m

You're right!
R6 is 470R, what a fool I am.
Updated schem attached.

asbestosaurus

I don't understand this circuit. The NPN part looks like a Capacitance multiplier, which is just an Emitter follower with nicely filtered voltage at the Base. You can make followers in the form of a Sziklai pair, so possibly all these parts could make a "Sziklai Pair Capacitance Multiplier&quo...

asbestosaurus

Cool pedal. Felt like more of a distortion than a fuzz, and a trace reveals why. That sense control is super interesting too. The only component I couldn't positively identify was D1, generic looking silicon power diode with the only visible markings being "L7". It's only doing sacrificial...

asbestosaurus

Thank you for this little gem Dylan. It does excellent job and then some :) Considering I'm borderline ignorant when it comes to electronics ( just above soldering skills :D ) i have a question. Can it be dirtied up a little? I was thinking inserting TS like clipping and of course it would be switc...

asbestosaurus

Very cool project, thanks for sharing. Any sound clips? It occurs to me that this would make a nice preamp for a clean solid state power amp stage, I don't have a fantastic recording setup at the moment but I can try to get something recorded if there is interest. also thank you, that is almost exa...

asbestosaurus

Yes. It's on the schem and the layout but I probably could have made it clearer.

asbestosaurus

IMG_20220518_204027.png IMG_20220518_204114.png Here is my latest original build. The enclosure came from a 3-knob AliExpress zendrive clone kit by Landtone. I first used it for a DIY Friedman Golden Pearl, which is why there are two extra switches. It turned out that keeping these let me design a ...

asbestosaurus

The four diodes in the second stage also almost certainly do nothing since it's a unity-gain stage and there's no signal to clip after the first stage. unless I've missed something, IC1B looks very much like a textbook non-inverting amplifier with a gain of 2 (6dB) plus a low pass cap and some feed...

asbestosaurus

just out of sheer curiosity i traced and drew up a schem from pictures of the PCB a while back. didn't figure it would be very relevant... until now. -1768761190-278859578.jpg 1202111369-518652627.jpg lt comp.png landtone compressor schem.PNG didn't bother drawing the switching layout but its not to...

asbestosaurus

might not be quite the right place for your question but the mods haven't moved it yet so idk.

from the description it seems like this od-5 probably isn't too far off a JHS Moonshine or a Maxon OD820. Schematics for both of those are available from pedalpcb.com or aionfx, respectively

asbestosaurus

Ichabod_Crane wrote: ↑04 Apr 2022, 10:25 Are the op-amps TL072?

Yeah I forgot to mention this, thanks. All of them are TL072CP

asbestosaurus

arivabox wrote: ↑03 Apr 2022, 02:50 it is interesting to see the photo, especially the power board, how the connection is implemented. An interesting move. Great job.

asbestosaurus

I watched a few demos of this when it came out and thought it was a really cool concept, but was outside of my price range at the time. Luckily, I managed to get a good deal on one second hand. I opened it up out of curiosity, expecting it to be full of SMT. Much to my surprise I was met with a doub...

asbestosaurus

A cleaner, copyright-safe redraw of the factory schem - complete with the same weird part numbering - with values confirmed from my 2002 model, the only changes being the buffers and switching transistors. All the electrolytics were 50V except the ones in the power supply, 47u was 25V and the others...

asbestosaurus

A fun variation on the classic D+/250 style circuit that nobody asked for. I like the original but wanted a little more flexibility from it. 2500.PNG IC1 is a precision Vref supply which I like to include when I can. IC2 is a super useful variable capacitance multiplier, borrowed from the page on gy...

asbestosaurus

Hey man I was wondering, is there a way to make the LFO more even in terms of wave shape? To make the chorus modulation smoother instead of having a major dip like a vinyl emulation pedal i'm not sure if you've seen this but it might be closer to what you're after. https://www.freestompboxes.org/vi...

asbestosaurus

for a decent and fairly expandable EQ take a look at dylan's Core Shaper. easily found with a search here.

asbestosaurus

With that short min delay, I would imagine this chip would be ideal for an ADT type effect. Asbesto, does your project do that? Might also work great for flanging. Analog Double Tracker? Automatic Double Tracker? Not entirely sure what ADT means here but it almost certainly could, with a little twe...

asbestosaurus

normal attack mod
tone isn't quite passive since the signal cut from the +ve input is boosted in the output. tone gets thinner as roll the knob up.

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