Maestro PS-1A / Nevrosa / Pharoahian

[juansolo]

Maestro PS-1A Phase Shifter




Layout by JDub of DIYSB, board fabbed by Haberdasher.

Clippage

Nevrosa



Grind Customs Nevrosa. Loosly based on a Plexidrive, but with way more bacon.

Pharoahian



Working my way through the new stuff in the muffs spreadsheet. This is a Pharoah clone is built on Jimmy BJJs Swarm PCB and has a appropriately stoner inspired decal.

[jkokura]

That maestro graphic is haunting and amazing.

Jacob

[selfdestroyer]

WOW, I love the art direction with these. You always create/pick out great art for your pedals.

[jubal81]

Fantastic stuff. The Maestro sounds are jaw-dropping. Is that the one Moog designed?

[rullywowr]

That phaser is totally awesome. Love the toans and the no knob ease of use.

The artwork is killer on all of them, very inspiring.

[marauder]

Fantastic stuff. The Maestro sounds are jaw-dropping. Is that the one Moog designed?

Bean's Stage Fright and the Maestro Stage Phaser are the Moog designed ones, these Maestro's are earlier and designed by Oberheim.

[juansolo]

WOW, I love the art direction with these. You always create/pick out great art for your pedals.

Mostly stolen from the net. I like graphic art, animie/manga, stoner/psychedelic art and ladies with large chests so that tends to be a lot of what I use. The only ones I've done myself tend to be the clones of existing pedal art (Doppelganger, Small Clone, Maestro Phaser, etc). Otherwise it's just editing, cropping, cutting and framing other people's work.

[Bret608]

A friend of mine had the original of one of those Maestros back in the 90s. It sounded awesome. It was funny seeing him use those three goofy footswitches onstage, though!

[pickdropper]

That Maestro is AMAZING.

[Cortexturizer]

haven't heard the sound yet but the look of it, inside and out...maaan!
I can imagine you Juan, slowly placing all of your work on a carpet and overlooking with tantric joy like a f-in stompbox demiurg!

[Ettore_M]

This phaser sounds really cool! I didn't know this circuit.  But it sounds amazing. 
Is there a project for this one?

Hector

[micromegas]

I love your builds man, and that phaser just sounds awesome.....

By the way, is the Nevrosa avaliable from Rej? If it is, where could I find it? (I know it would be better to ask Rej about it but I still didn't ask Jason about the Speedy Mary. I'm a procrastinator and need to work in the heat of the moment  )

[juansolo]

I love your builds man, and that phaser just sounds awesome.....

By the way, is the Nevrosa avaliable from Rej? If it is, where could I find it? (I know it would be better to ask Rej about it but I still didn't ask Jason about the Speedy Mary. I'm a procrastinator and need to work in the heat of the moment  )

Not sure the Nevrosa is a DIY effect or one of his kits. Rej sent it to Cleggy a while back (things fly backwards and forwards across the Atlantic between Rej and us). Not sure. Can't hurt to ask.

Jason still has some Speedy Maries I think. Worth bobbing him a PM. There are a few changes worth making. One of the caps we could only get as SMT for example and we bypassed the fet on the front. Also it really needs to run at 18v so drop a charge pump on the front. Very cool though. Gonna be building another for Cleggy as he likes it so much.

This phaser sounds really cool! I didn't know this circuit.  But it sounds amazing. 
Is there a project for this one?

Hector

Layout - http://juansolo.demon.co.uk/stompage/schematics/Maestro/Maestro%20PS-1A%20layout.png
Transfer - http://juansolo.demon.co.uk/stompage/schematics/Maestro/Maestro%20PS-1A%20transfer.png
Maestro Schematic - http://juansolo.demon.co.uk/stompage/schematics/Maestro/Maestro%20PS-1A%20schematic.gif
Oberheim Schematic - http://juansolo.demon.co.uk/stompage/schematics/Maestro/Oberheim%20PS-1%20schematic.pdf

UPDATE - Found the fella who did the layout over on DIYSB and he's uploaded the later versions that have the corrections. Still needs the 5 anti-RFI caps though. But all the orientations are now correct.

Bear in mind what I posted above: If you look at the innards of mine, all the socketed fets are the wrong way around on that layout and you'll need to add the RF caps that are missing (underneath on mine).

Powering it is also fun. You'll either need to use a Road Rage (hidden under the board on mine) to get you the -12v or something else to get +/-12v. We couldn't get any other method to work as well as using a 12v supply.

To make it true bypass (there's a slight vol drop when the effect is engaged), link the slow connections.

[micromegas]

thanks. I think I'll write to Jason right now

[GrindCustoms]

You guys have really knocked that Maestro like champs! Freaking amazing!

Not to derail, but just to answer, the Nevrosa is not available as a DIY project, it's one of my production layouts, once i verify my prod stuff, i usually sell couple ones over BYOC, truly a first arrived first served thing. But yeah... some day i start to think that there's just a small bridge between my northern location and UK.

And!! Those home brewed SMT JFets looks just so rad!