4 channel geen mic pre is coming....

hi to all.
here is a pic of my 4 channel green mic geting ready to use...
just looking for some feedback, and maybe a suggestion on how to
adjust cmrr with a software based oscilloscope.
thanks

1. GREEN FRONT
2. GREEN INSIDE
3. ANOTHER FRONT VIEW

edited...

o.k- i wont worry about it anymore...
thanks :grin:

Nice job, mich! How about a front view? What about the knobs for the gain switches?

Peace!
Charlie

Nice work!
I'm gonna have me one of them too, pretty soon... :wink:

~ Charlie (the other one)

Excellent work...

But polarity on the back? Yipes. What happens when you don;t have rear-rack access?

Didn't GMass. do this on one of his designs?

Shane

thanks everyone

categoty 5,i think you are right on the polarity switches ,but i didnt want to run wires back and forward across the case...or maybe i was just lazy..

the knobs are waiting, cause im in search of some nice ones to fit nicely and elegantly on this preamp.. (and they are hard to find here in madrid) :wink:

now comes the labeling...
if someone wants to advise..

thanks again for the feedback,and for all of you who is steping in to help when a newbi asks some questions..

Hey Mich

Looking good.

categoty 5,i think you are right on the polarity switches ,but i didnt want to run wires back and forward across the case...or maybe i was just lazy..

Click to expand...

Thats the very reason I continued the design to try & provide a single board mic pre. All the extra wires are a pain in the butt. :evil:

Peter

Hello Mich,

I'm also in Madrid and I'm also going to build a quad Green pre. Where do you get the parts ?

peter,
i saw u have another design of the pre (with led meter)-but i didnt know where to get it from...anyway great sounding pre that u made!
thanks for this project.

kat,
if u can find the single board for the quad green-go for it!
and the parts are mostly from "conectrol s.l" (en la calle jorje juan 58)
good luck!

[quote author="mich"]thanks everyone

categoty 5,i think you are right on the polarity switches ,but i didnt want to run wires back and forward across the case...or maybe i was just lazy..
..[/quote]

Naargh...Dont worry..you are among the greats...!!! George Massenburg placed the phantom power switch on the back of his preamps.. :shock:.. :grin:

Kind regards

Peter

This looks like a VERY NICELY DONE PROJECT!!! Way to go! :thumb:

I had a couple of questions for you, if you don't mind.

Did you use Peter's premade PCBs for this project?
What power transformer are you using (is it really high quality)?

Thanks!

peter,
i saw u have another design of the pre (with led meter)-but i didnt know where to get it from...anyway great sounding pre that u made!
thanks for this project.

Click to expand...

This is the latest design for which I have been selling PCB's. However if you email me I'll send you the layouts.

peterc(at)onwe(dot)co(dot)za

Peter

the power transformer is 20v+20v at 1A, i dont think its speacial in anyway....

and the 4 pcb's i made with press & peel and the layouts at peter's site.

:thumb: