Peanuts to Space (1590A reverb) & ZP Micro

[midwayfair]

... Peanuts to Space

This is a 1590A Reverb on perfboard with enclosed jacks and a side DC jack.



Since the board is face down, here's a peak at what it looks like under there:


The perfboard circuit is tiny, and it's sized and arranged so that when the brick is attached it will put the perfboard into the cavity in front of the low-profile jacks. I'm not sure it would have fit any better with open jacks; the problem turned out not to be the brick itself but the potentiometer butting up against the caps and especially the chip (which I had to put in a socket because I fry them every time I try to solder them since getting my soldering station ). The other thing I did, which probably wasn't really necessary, was snip away part of the plastic on the brick so I could bend the pins flush and fit the board entirely under the brick. The output pulldown had to go on the switch because there just wasn't a good way to fit it. The input pulldown is unnecessary in the Rub-A-Dub given the input impedance. Here's my layout; it also has the values I prefer (which let the reverb get above unity and reduce the signal level going into the chip):
https://dl.dropboxusercontent.com/u/9878279/Jon%20Patton%27s%20layouts/Rub-A-Dub%201590A.pdf

I don't think this beats the Box of Hall in a 1590A with enclosed jacks that was posted on BYOC recently, and after doing this I can't for the life of me figure out how that one was done, but I've done it and I can stop thinking about it now.

Singularity (Zero Point Micro)



I actually soldered this up very soon after the project was originally released, and I've had the box drilled for a couple months, but I wasn't happy with a few things. I kept thinking I'd revisit this build, but that just kept not happening, so I boxed it up stock. Specifically, I don't like that the delay never gets above about 66% of the dry signal, and there's a bit more trash in the repeats that I would have expected from the filtering, but the modulation does sound good. I ended up wiring it as true bypass but I might go back in and do it as tails instead if I ever decide it needs to go on a board.

[wolfingsworth]

Very nice work! The graphic on the ZP is really cool and spacey. I can't believe how much fanagling it must take to get a brick and a board into a tiny build without something shorting out. Your work is always most impressive sir!

[stevie1556]

That reverb is amazing! How you did ot
It is amazing! Well done, give yourself a pat on the back!

Sent from my thumbs using Tapatalk!

[Stomptown]

Holy crap! That's amazing Jon! I can't believe it's even possible to get that Belton to fit in there!

[hoodoo]

Very impressive, masochistic piece of work, i saw the other one at BYOC too and all i can think to ask is, WHY would you put yourself through this Matt.

[alanp]

Saw the other guy's belton-in-a-1590A on diysb, and I still reckon that little bonsai boxes scare me more than big ring modulators

[Guybrush]

Brilliant work. How do you keep things so neat!?

[jimilee]

Those are insane Jon

[G.G.]

Nice work, Jon! I don't know what could be more difficult than trying to put a brick in a 1590a. One suggestion though: it would really be great if could post larger pictures. Your builds are so instructional to a lot of us and it would be great to be able to see them in more detail.

[Tremster]

Those are insane Jon

Those are insane Jon
!

[pickdropper]

Just great mini builds, Jon.  Very well fit together.

Nice graphics, too.

[kinski]

Awesome! Great to see more 1590A reverbs!

[spaceboss]

These 1590a reverbs are killing me.... Love the paint jobs, especially on the Singularity.

[pickdropper]

Dammitol Jon, you inspired me to revisit the Tenebrion (modified box of hall) 1590a layout that I have been avoiding.

[lincolnic]

You're a monster!

I mean that in the best way possible.