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De Profundis delay
Posted: 24 Jan 2019, 17:56
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, and
the 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,
Re: De Profundis delay
Posted: 24 Jan 2019, 19:15
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.
Re: De Profundis delay
Posted: 24 Jan 2019, 19:47
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...
all the layouts.
Would you have a link to any other layout than the TagBoardFX one ?
Re: De Profundis delay
Posted: 24 Jan 2019, 21:26
by karul
build document
Re: De Profundis delay
Posted: 24 Jan 2019, 21:37
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) ?
Re: De Profundis delay
Posted: 01 Feb 2019, 18:52
by snk
Little bump : I'm looking to build a PT2399 delay which is not too dark, and i am hesitating between building either the
De 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)....
However, maybe that the Wampler is better, so if it is true, there is no reason not to buy it
Does anyone have an opinion about one vs the other ?

Re: De Profundis delay
Posted: 02 Feb 2019, 01:28
by karul
Why don't you try all of them on breadboard first, and then make a decision which one suits you the best.
Re: De Profundis delay
Posted: 02 Feb 2019, 10:01
by snk
This is my plan for today

But i wish i had some directions first, to avoid a couple of trial & error steps

Re: De Profundis delay
Posted: 24 Jan 2022, 17:34
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...