Akashic Guitar effects circuit lookup
REPEATTIMEMIX

Enclosure not stated · 3 knobs

Effects Layouts (blog)

Crap-Fi DelayVerified

Based on the Allesz's Crap-Fi Delay· 2 other boards clone it

Category
Delay
Controls
Repeat · Time · Mix
Layout
Verified · Effects Layouts (blog) marks it as built and working
Tags
Allesz, Delay

From the post

Here's a fairly simple PT2399 delay from Allesz over on FSB. Here's what he had to say about it:

It is a simple circuit and it works good but: the mix and repeats pot are a little interactive in quite a strange way (anyway they work different from a standard echo: to turn off the delay you don'use the mix pot, but you turn to zero the feedback pot) and the on off is a little bit noisy (the clip is recorded at low volume and you will hear kids (always noisy) and clicks so, mostly, the clicks are from the mechanical sound of the switch, but a little noise makes it to the amp too) in order to minimize the clicks the input is grounded on bypass.

The major differences between my schem and the others pt2399 projects I know are that I didn't use the opamp between pins 14 and 13 and I didn't put a cap between pin 2 and three (repeats sounded cleaner to me this way).

I put a small switch to select between long and short delay; the long delays are quite dirty.

Schematic

This is a board layout, a drawing of where each part goes, and the post may link the schematic it was drawn from. Open the layout at Effects Layouts (blog). No KiCad fragment has been drawn for this circuit yet.

Parts list 15 rows

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RefValueNormalizedTypeNotes
Resistors 5
×415K15kread from the layout by eye
×21M1Mread from the layout by eye
×11K1kread from the layout by eye
×147K47kread from the layout by eye
×168K68kread from the layout by eye
Capacitors 3
×7100nF100nread from the layout by eye
×122nF22nread from the layout by eye
×2100uF100uelectrolytic; read from the layout by eye
Diodes 1
×11N40011N4001printed 4001; read from the layout by eye
ICs 2
×1PT2399PT2399read from the layout by eye
×178057805regulator, TO-92 outline (I G O); named in the wiring diagram; read from the layout by eye
Potentiometers 3
RepeatB500KB500kPotentiometerread from the layout by eye
TimeB50KB50kPotentiometerread from the layout by eye
MixB100KB100kPotentiometerread from the layout by eye
Switches 1
SwitchSPDTSPDTtoggle; Sw2 to Time 1/2; read from the layout by eye

Other boards based on the Allesz's Crap-Fi Delay