Written by knopsl

psuedo reverb – culturejam build

I had a couple of PT2399 ICs lying around for the last year and never found a schematic or layout I wanted to try. Since I’ve never worked with that IC I didn’t want it to be too complex right away. Now last week I found something I wanted to try and I think it’s pretty beginner friendly.

Oh and don’t let yourself get fooled it is more like a delay. The feedback is rough and I like it. It has a couple of sweetspots imo.

I settled for a super simple black style. It is basically three layers of spraypaint. Grey primer, black and a protective layer. I used 3.5mm jacksockets because I’ll use it mostly with external gear but I tested it with my modular as well and didn’t have any problems. The on-off switch is simply between the barrel connector and the 9v input on the stripboard. When off it passes the original (dry) signal with a loss of amplitude.

Be sure to check the orientation of the linear voltage regulator (7805).

Building steps

  • cut the Stripboard so it matches the layout (count holes)
  • Use a permanent marker to mark each hole that gets ‘cut’ on both sides. The layout is always the component side (so not the copper side)
  • Use a 3-5mm drill and cut the traces using it on the holes (do it by hand)
  • Use solid core (0.5mm) wire for the jumper wires (black connection ls on this layout) – blue and white point here means the jumpers from both sides meet there – so two wores going in there
  • Start building from the lowest to the highest component
  • Connect all cables – input, power, output, pots – if you look at the pot from the front then from left to right it is 1 left 2 middle 3 right

This is the verified stripboard layout. My only modification was that I used a 100k pot for the Time. I read you can do a lot of those modifications on the original project page.