DEMO DeadastronautFX Abductor II Delay (4x PT2399 multi tap)

This post contains an audio or video demo

owlexifry

Well-known member
i’m a fan of PT2399 delays.
they’re a great definition of ‘cheap and cheerful’.
and despite the idle ‘hash noise’ they tend to have, i don’t really notice it enough for it to matter in a context where guitar amp + speaker cabinet is involved.
(in a DAW, i guess they can become undesirable)

i was looking for a PT2399 delay that uses multiple PT2399 ICs and then i stumbled on this one from DeadastronautFX.

the 'Abductor II Delay' employs x4 PT2399 ICs for x4 individual delay lines that each have their own timing/sub-division and mix/level control.
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‘I’ - is the core/root delay line that the others follow. (1/4?)
‘II’ - is double the rate of ‘I’ (1/8?)
‘III’ - (dotted 1/8?) i think that’s what it is, im a dummy and dont really know this stuff.
‘IV’ - is very short, like a slap back that adds space / depth.
- the toggle engages really long delay times. it's kinda cool, kinda not really that useful, and does cause a bit degradation as you would expect.
- and then it has rate/depth controls for modulation.

it’s awesome!
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on initial testing of this build the delay effect didn’t work at all.
considering the x9 offboard pots and tight squeeze to get it in neatly, i was pretty bummed and wasn’t all that keen to pull it apart.
it sat for many many months, until recently when i decided to have a proper look.
ffs, it was the most noob error.
x2 adjacent pins on the ‘first’ PT2399 had a solder bridge. missed it. that's it.
easy fix at least.
and i'm glad that i did, this delay is a delight.
(and i've just realized i haven't even properly selected the PT2399 ICs yet, I was just stoked to get it running)

i acknowledge that the input / output jack arrangement is sinful and a violation of many unspoken codes, but i really wanted to have it in landscape orientation and this made things difficult. so i decided to just be a weirdo and accept the 399 year curse that will be cast upon my bloodline 🤷‍♂️

here’s an attempt to demonstrate some of the sounds this is capable of, and i even turned all of the knobs 🎛️

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Nice! Great demo. I built one on an etched board when he first created it. Want to talk about fun.
crikey etching one of these would’ve been a heck of a task, nice one 🫡

That looks like a lot of fun! Demo sounds great.
cheers! 31x 100nF caps, x9 offboard pots; definitely a good time haha

I built one a while back, fun pedal, love the layout, Great demo!
thanks! took me ages to figure out that knob layout, pretty stoked on it though.
 
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