#1

A thread for interesting hacks for the cheap PT2399 delays that are everywhere.

I recently purchased a Donner “analog” delay because I saw it for 20 bucks. It’s not actually analog, it uses the aforementioned Princeton chip. I is set up as a clean, vanilla, BBD emulation. I don’t want that. I remember back before I knew that the Synthrotek guy was a complete creep (2015ish), I had one of their PT2399 delays, and due to the faulty parts they supplied, and my bad calibration, I got some really interesting glitches. Most of these come from setting the delay time to be too long. It seems like it should be possible to circuit bend/hack these super cheap pedals, and make them much more interesting. Has anyone done this? Any advice?

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#2

Look Mum No Computer did a custom module using 2 or 3 of these and hacking them! Might be good resource to see ways to implement your own tweaks:

Here is a forum post about what some people are doing with the 2399 as well

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#3

My experience is strictly with euro but the NLC Delay No More is all about pushing the 2399 into glitch-finity… Schematics are available.

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#4

The Electrosmash page on the PT2399 is required reading if you want to hack it!

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#5

there was a guy in bulagria who sold premade pt2399 smd circuits that sounded really cool, i was able to mod(bend?) them by added 47k resistor protector inputs on different sections of the demodulator (looks like a ladder going up the pin 10-16 side) and to pins 5 and 6 (if i remember correctly) the pins around the clock out pin

i would love to find out what is going on with that clock out pin, never had the chance to check it with a scope. also just simple routing of in and out audio internally by bridging points with momentary switches was always super fun. turned it into almost like a granular sampler

#6

My dude makes a pedal that stretches the PT to its limit…

I know he’s talked about the technical aspects a little bit on IG (dirgeelectronics) but you might have to do some digging…