Dual Delay

[thomasha]

This time I tried to build the multiplex delay in a smaller box.
I etched the PCB and had to solder some components on the copper side, but it fits nicely. I even used another board for the pots.
For the switching I used a dpdt to have the series/parallel modes, without the single delay mode.
The sound is nice, the parallel configuration gives a nice echo effect, but as for other delays, it gets dirty at longer times. At some settings the oscillation from the repeats sounds like a shimmering effect, but it also can get really weird.
Some pictures:





I made a reverse etch for this one

[Aleph Null]

Wow.  Looks like you used about 95% of the volume available inside that 159A!

Do you have any special buffering going on for the parallel mode, or are you just the front of each circuit?

[cooder]

That's .... tight..... as.....
Amazing!

[Invertiguy]

  These 1590A builds are getting ridiculous, I have enough problems stuffing things into a 1590B! Awesome work!

[gordo]

I got your 1590A right here...

Damned impressive work here.

[alanp]

Ruddy hell. What's next, a Tau Pipe in a 1590A?

[Leevibe]

That is an unbelievable amount of through hole parts in a tiny space. And it's a beautiful pedal. You really do amazing work. I'd love to see this hooked up to a submini tube amp.

[323effects]

Wow, that's nuts. Can't imagine stuffing all that in there 
Really clean etch too!

[nzCdog]

Omg. Pretty impressive, well done 

[thomasha]

Thanks guys!

The parallel mode is, as in the multiplex, just the signal going to both inputs and added at at one side of the mix potentiometer.

[culturejam]

That is amazing! 

[selfdestroyer]

Damn Thomas! Amazing work.

[thomasha]

A not so short video to show that it works and how it sounds! In case you were wondering...

Watch out for the oscillation, it's loud.

The schematic I used was this one:
http://1776effects.com/wp-content/uploads/2015/03/Multiplex-Build-Doc-1.7.pdf