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Red Sonja (engl preamp circuit via amz/jok3rx)

Started by wgc, April 17, 2015, 03:53:23 AM

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wgc

April 17, 2015, 03:53:23 AM
This my smd layout of jok3rx's engl preamp circuit based on AMZ ENGL MOD2.  I had a bunch of trouble getting it biased properly,
still not quite there but close.  I may do a version 2 using mosfets.  Because gain.

Love it!  Spent a while on this one.  Had a lot of irons in the fire but getting some of these completed is great.

Wasn't plagued with all the squealing issues I had with the Uberschall build, though I do get a little at extreme settings of
the volume pot.  Very interesting that both preamps actually do have many of the characteristics of the brands they're based on. 
Hard to believe but I think I actually prefer it to the uberschall.

I powdercoated the box white, used a laser printed water slide, which was then sprayed with clear powder coat 24 hours later. 

Always liked Red Sonja...










Thanks for looking!
always the beautiful answer who asks a more beautiful question.
e.e. cummings

alanp

#1
April 17, 2015, 04:01:09 AM
Fk me, that is INSANE.

It's like, you see the art and think, "That's pretty cool"... then it dawns on you, ITS A 1590A...

And then you see the inside, and the PCB, and you're more impressed.

Then you see the OTHER side of the PCB, and you're like, HOLY FK!
"A man is not dead while his name is still spoken."
- Terry Pratchett
My OSHpark shared projects
My website

wgc

#2
April 17, 2015, 04:11:16 AM
Thanks Alan!  BTW, I used those frickin' small diodes you so kindly sent me on this one... ;)
always the beautiful answer who asks a more beautiful question.
e.e. cummings

cooder

#3
April 17, 2015, 06:51:56 AM
Craaaaaaaaaaaaazy!



... and a bit superb.
BigNoise Amplification

m-Kresol

#4
April 17, 2015, 06:58:21 AM
Looks like you could have squeezed another circuit in there. Love the graphics.
I build pedals to hide my lousy playing.

My projects are labeled Quantum Effects. My shared OSH park projects: https://oshpark.com/profiles/m-Kresol
My build docs and tutorials

luks999

#5
April 17, 2015, 10:10:20 AM
awesome design and guts  8)
your smd builds are the real stuff :)

Cortexturizer

#6
April 17, 2015, 10:23:53 AM
awesome, just awesome

great artwork :D
https://kuatodesign.blogspot.com - thoughts on some pedals I made
https://soundcloud.com/kuato-design-stompboxes - sounds and jams

bcalla

#7
April 17, 2015, 01:42:22 PM
Beautiful!

icecycle66

#8
April 17, 2015, 02:26:44 PM
Quote from: alanp on April 17, 2015, 04:01:09 AM
It's like, you see the art and think, "That's pretty cool"... then it dawns on you, ITS A 1590A...


Yup.

HamSandwich

#9
April 17, 2015, 02:44:46 PM
So dope. Where do you get your PCB's fab'd?

juansolo

#10
April 17, 2015, 03:47:50 PM
 :o
Gnomepage - DIY effects library & stuff in the Stompage bit
"I excite very large doom for days" - playpunk

TGP39

#11
April 17, 2015, 04:14:48 PM
Absolutely speechless. This is where us non-smd guys miss out. Billy, can you recommend a proper solder station/reflow oven to get started?  I have to try.

Steve.
Follow me on Instagram under PharmerFx.

Matt

#13
April 17, 2015, 05:13:02 PM
Quote from: alanp on April 17, 2015, 04:01:09 AM
Fk me, that is INSANE.

It's like, you see the art and think, "That's pretty cool"... then it dawns on you, ITS A 1590A...

And then you see the inside, and the PCB, and you're more impressed.

Then you see the OTHER side of the PCB, and you're like, HOLY FK!
What he said!!!^
Matt

selfdestroyer

#14
April 17, 2015, 06:48:07 PM
Mad skillz.

Crazy cool.

Cody
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