"Sonic Death Ray" Phaser. Just got this started, anyone wanna ride shotgun?

[effdub]

Nice! 

[frequencycentral]

I found something really cool - toggling the Parity switch really fast between odd and even stages in the regen path while playing sounds awesome. So I've made a second LFO, driving two home-made vactrols. The LEDs are so configured so that they flash alternately as the LFO goes through it's cycle. So at the top of the LFO sweep the regen path is returning through an odd number of stages, and at the bottom of the sweep regen is returning through an even number of stages. I cannot begin to describe the sound this is making. I guess it's hard to imagine what a 14 stage phaser sounds like, let alone the difference between odd and even regen paths, let alone what modulating between odd and even regen paths sounds like. It kind of imprints another modulation over what's already there. Used clean, with slow phase and fast parity modulation it's like a vibe on top of the phase. Used distorted it's a talking-robot-synth-guitar-armageddeon-machine. You'll just have to wait for the soundclips.

[frequencycentral]

Here's some clips, recorded direct to soundcard, so a little sterile. Tele Custom > BMP > Phaser > Soundcard

Stepping through the stages

Parity modulation

I'll do some clean clips a little later.........

[earthtonesaudio]

I haven't had a chance to listen yet, but I'm stoked to see you've implemented the parity modulation.  Ballsy.

[frequencycentral]

Yeah the parity modulation is interesting, though a little too 'square' at the moment. I've got to play with the LFO to get the LEDs to fade on and off instead of switching on and off. I may try some different LFOs, maybe a PSO.

[frequencycentral]

Parity modulation LFO redesigned, perf'ed and tested, home-made vactrols rolled. And the main PCB arrived today from my PCB man.......



......and some perf-porn:

[frequencycentral]

Here's the new parity mod circuit and layout. A little more graduated than the previous version. Incidentally, this circuit can also be used to replace pretty much any pot configured as a voltage divider, though you might want to limit the dark resistance of the LDRs by using resistors in parallel. Imagine - LFO control of BM tonestack, or of mixing between two signals, or..........

[frequencycentral]

PCB layout verified! Just hooked it up! This thing sounds awesome - even quieter than on breadboard. I can't wait to get it boxed up now......

[Brymus]

Here's some clips, recorded direct to soundcard, so a little sterile. Tele Custom > BMP > Phaser > Soundcard

Stepping through the stages

Parity modulation

I'll do some clean clips a little later.........

WOW
When I first started playing guitar I went to tryout for a local band.

My friend's , anyway he had an older Digitech phaser the one that was in the huge cast enclosure the size of two and a half Boss pedals.
The first clip reminds me of that phaser.(which I loved,nice job)
The second is just FN awesome!!!!!
I have to build one just for the parity option,way huge sound,another great job Rick !!!!

[frequencycentral]

This is how I am proposing to implement the (quite complex) regen options:



The two regen inputs are on the left, one stage apart. The DPDT selects either parity modulation (from the parity modulation board) or fixed odd/even parity (selected by the SPDT). Then the regen pot and limiting resistor. Finally the 6 regen taps (each two stages apart) selected by the 1P6T rotary switch.