Sagan Delay 2.0

[diablochris6]

I revisited and refined the Sagan Delay circuit I put together a few years ago. I added an always on preamp boost, improved the clipping and tone shaping section of the circuit, and added an onboard LFO for modulation. Gone are the individual delay volume and time controls, but I can add and subtract the delay signals from each individual PT2399. The effects loop changed a little as well; the two modes are now post feedback loop or within the feedback loop for some out of this world sounds. There are two trimpot controls that are accessible through the small holes on the top, a grit control that controls how much clipping occurs on the repeats and a sway control for some subtle LFO fluctuations. The arcade button lights up when the delay is activated and function as an instant feedback oscillation switch.

I designed the graphic in Inkscape and printed it at FedEx/Kinko's. I applied a thin layer of polyacrylic on the enclosure, laid the graphic on top, and rubbed the paper off with water after it dried. I think I found my new favorite way to apply graphics!




And here is the new build next to the original Sagan circuit. Thanks to the stacked boards, I can fit the new version in a 1590BB Tall and have board mounted pots!

[kaeisy]

Great  !

[Boba7]

Wow that looks amazing!!

I would love a demo of it if you have the time!

[bsoncini]

 That is sweet. You never ceases to amaze with your designs. Looks like a mini Sagan next to the other one.

Hopefully you'll be putting some boards up for sale in the future.

[dan.schumaker]

Looks awesome!  You know I'm up for one when you decide to make these available

[Martan]

That is awesome, Chris! Great work on the revisions. Slightly confused about the graphics applications, though. You printed on regular paper (or glossy)? and sunk it into a coating of polyacrylic? Sounds neat but can't visualize it yet.

Marty

[thesmokingman]

definitely want a demo ... definitely interested in this project

[jimilee]

That's very cool, I love my first one.


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[glops]

Both of those look awesome!

[oip]

looks so nice!  great design

is it two separate boards?  i'd be interested in grabbing one also if they are around, got a whole swag of PT2399s sitting in archive mode

[Ralfg]

Wow nice work!! I'd be down for group buy if you do one.

[JC103]

Nice one! What kind of preamp did you do?

[diablochris6]

That is awesome, Chris! Great work on the revisions. Slightly confused about the graphics applications, though. You printed on regular paper (or glossy)? and sunk it into a coating of polyacrylic? Sounds neat but can't visualize it yet.

Marty

Yes, plain copier paper. Flip your image, print, and lay it face down on the thin polyacrylic layer on the box. This smooth talking puppet should set you straight.

looks so nice!  great design

is it two separate boards?  i'd be interested in grabbing one also if they are around, got a whole swag of PT2399s sitting in archive mode

There are two stacked boards connected by female and male connectors. It was the only way to get rid of offboard wiring.

Nice one! What kind of preamp did you do?

I based the preamp off of the Nocturne Atomic Brain preamp, which is a not quite Roland RE301 preamp, but it does what I want it to. 10 o'clock on the pot is about unity, so things can get pretty loud.

[culturejam]

Damn, that's awesome.

[ahiddentableau]

Awesome build, looks great!

I am wondering about one thing though.  Your enclosure looks like a black prefinished type with a roughish surface, similar to the Hammond 1590BBBX--I don't know what the precise word is to describe the texture of the surface, but the Hammond is slightly rough.  Is that right?  If so, when you used that enclosure label technique, did you use it directly on the surface of that enclosure?  Did it require any extra prepping?  Or is the technique just super forgiving?  I have a 1590BBBX and I wouldn't mind trying your method out.