thanks for your answer, Mr Davis and Electro-melx.
yes, that’s right that this delay sounds nice .
vintage type delay that degrades the repeats in a nice way , a bit like an old tape delay i suppose (as i never heard one in direct) .

when you say the delay control pot, do you mean the delay time pot (or a trim pot inside ?
i suppose it’s the delay time pot .

and for the clock chips, i suppose you talk about the 2x MN chips (or 4X MN chips in the later model) ?

i didn’t know there was a noticeable tolerance in those chips (i have to say i don’t really know those parts as i’m more used to repair or build my vintage / vintage type guitar tube amps and a few simple fuzz pedals and wah’s for my recording studio ).

i don’t think i was just unlucky or Mr Davies and Analogman or others wouldn’t propose some ” standard” mods for those DMM pedals .
this mod seems to be a common analogman mod prposed on his website.
also, most guitarists don’t know precisely how much ms delay time they have as they don’t measure it (or don’t know how to ).
before i recorded it and watched the waveforms in my Logic pro software, comparing with a tc delay with wich i could select the ms precisely, i didn’t know how much time i had !
i just felt it was quiet short for a 550 ms delay.

when they say “up to 500ms” it means you can go from a short delay time UP to 550 ms (or at least 449ms !) .

i would be happy if i could get 550 ms, it would be enough for me (even if 600 would be nice as well ! LOL).

thanks for your answer.
as you designed this pedal, can you tell me what components have such a tolerance that most DMM pedals advertized for 550 ms are barely 400 ms ?

also, i don’t want to extand the delay time past 550 ms, once again, i just want what i paid for, that’s is to say a pedal with 550 ms delay and a good tone.
i have not studied electronic but i thought what is making the delay time are the chips inside but i didn’t know there could be such a difference between chips; sounds weird (although if you say they do have such tolerance, i will belive you as i suppose you know about that ).

why most other delay pedals i tried (ibanez, mxr , maxon …) seem to have more or less the delay time they are advertised for, if there is such a tolerance problem with chips ( MN or other ones like SAD1024, reticon5101 ) ?

so if i follow you the advertizing was lying as most seem to have much shorter delay time than advertized.

by the way, as you designed it, could you tell me how much current draws the big box DMM reissue (2003 model with external 24v power supply ) as i would like to use CIOKS Schizophrenic power supply to power it ?

i don’t really want to play with the trimmers, without knowing what i’m doing .
if it’s not posible to get a DMM big box sounding alright with 550 ms, then their marketing is just bullshit, if it is possible, i would like to know what i have to do .

so, do these chips can go up to 550 ms with a good tone or not ?

i don’t want my pedal to be modded, i just want to setup or calibrate it correctly to have what i paid for , a 550 ms delay with the normal DMM tone.
there might be a shop in Paris i could take it to but i don’t know if they are used to calibrate those pedals.
i can’t believe i got so little time delay right out of the box !!

thanks for the answer.
mine has the two chips .
400ms delay max ?
so why is it sold for 550 ms ?

i think there are 3 or 4 trimmers at the back of the pcb