De Profundis delay

Stompboxes circuits published in magazines, books or on DIY electronics websites.
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snk
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Post by snk »

Hello,
I am interested into the Grind Customs "De Profundis" delay, as it is supposed to be a DIY project, featuring a hi-pass tone trimmer (which i am interested into studying).
Unfortunately, the website seems gone for a while, andthe layout from doesn't feature the aforementionned tone trimmer.
Could anyone help about telling me where this trimmer is supposeed to be, and/or where to find teh schematic as well as a veroboard layout, please ?
Thank you in advance,

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marshmellow
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Post by marshmellow »

There is also a tone control trimmer to adjust the high pass cutoff frequency on the repeats.
It's also marked as offboard wiring in all the layouts.

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snk
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Post by snk »

Offboard wiring ? So you mean it's the tone knob ?
I thought the tone knob was the usual lowpass, to filter out the high frequencies (like every other PT2399 delays), not a hipass getting rid of muddy bass... :scratch:
all the layouts.
Would you have a link to any other layout than the TagBoardFX one ?

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karul
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Post by karul »

build document
Attachments
DeProfundis_Build.pdf
(204.44 KiB) Downloaded 379 times

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snk
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Post by snk »

Thank you so much, Karul !
So the 10K (trimmer on the build doc / pcb, and knob on the veroboard layout) is actually an hipass filter ? This is rather unusual, and interesting...
This may mean that the De Profundis is natively low-pass filtered (and that you can not adjust that, unlike many other delays) ?

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snk
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Post by snk »

Little bump : I'm looking to build a PT2399 delay which is not too dark, and i am hesitating between building either theDe Profundis Delay or the Wampler Faux Echo...
It seems that both are rather similar, but the De Profundis layout is quite smaller, with less traces and cut, so the lazyness in me tells me that if both should sound near identical, there is no reason to go for the Wampler (also a smaller veroboard might be easier to tweak).... :hmmm:
However, maybe that the Wampler is better, so if it is true, there is no reason not to buy it :mrgreen:
Does anyone have an opinion about one vs the other ?

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karul
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Post by karul »

Why don't you try all of them on breadboard first, and then make a decision which one suits you the best.

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Post by snk »

This is my plan for today :)
But i wish i had some directions first, to avoid a couple of trial & error steps ;)

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jeepe
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I'll never build anything without seeing the actual schematics too...

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Post by jeepe »

:(
It seems clear that breadboarding such a big circuit doesn't make sense...
but it would have been nice to know what the result of your project turned out to be in the end...
pedal building, tracing and sharing is such a beautiful freedom movement... If only it could be viewed as a future heritage, but it really is ephemeral, as it seems

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