barclaycon

Re: Roger Mayer RM57 build?
« Reply #40 on: June 25, 2009, 01:22:01 PM »
Yes. Now you are found out Gottfried !!


mr coffee

Re: Roger Mayer RM57 build?
« Reply #41 on: June 29, 2009, 12:56:55 AM »
Did I miss something, or has the RM57\RM58 schematic (for the compressor part of the circuit) never been posted?

I'd be glad to help with the clone process.

Bart

barclaycon

Re: Roger Mayer RM57 build?
« Reply #42 on: June 29, 2009, 11:14:25 AM »
We are still collating info on this.
analogguru says he might draw out the limiter board when he has time.
dustbro has actually aquired an RM58 and will be looking inside for more clues.

hobiesound

Re: Roger Mayer RM57 build?
« Reply #43 on: June 29, 2009, 02:38:17 PM »
i'm not sure if it's ok but i can email the schematic for the RM58 to the Gdiy email account.

greetings,

Thomas

Re: Roger Mayer RM57 build?
« Reply #44 on: October 14, 2009, 10:50:34 PM »
anyone made progress on DIYing the RM57 or RM58?  i would love to build one if it's doable.

is the schematic for the RM57 posted anywhere for public consumption?

thanks
 

dustbro

Re: Roger Mayer RM57 build?
« Reply #45 on: October 15, 2009, 12:22:35 AM »
Hey guys!
My day job (making records) has gotten in the way of my hobby, so I havent had much time to put towards cloning this thing. I could probably bang it out in a weekend if I had some spare time.
I'll keep everyone updated when something happens.
Dan

Re: Roger Mayer RM57 build?
« Reply #46 on: October 15, 2009, 12:24:33 AM »
thanks dan!

Re: Roger Mayer RM57 build?
« Reply #47 on: February 09, 2010, 11:46:39 AM »
Doe's anyone know what became of all of this? I would like to see a good schem of this thing and see what is going on with it. I have identified some different values used with these for those interested.  Thanks, Axisbold.
« Last Edit: February 09, 2010, 12:03:44 PM by axisbold »

dustbro

Re: Roger Mayer RM57 build?
« Reply #48 on: September 09, 2010, 11:50:18 AM »
Just in case anyone missed it..

http://www.roger-mayer.co.uk/rm58.htm


volker

Re: Roger Mayer RM57 build?
« Reply #49 on: September 09, 2010, 12:05:56 PM »
The manual/schematic is attached in the first post here.
Not sure if you can see or download it without being logged in.


If you read the last post, you can see that it actually originated from somebody here.


kato

Re: Roger Mayer RM57 build?
« Reply #50 on: September 09, 2010, 09:48:49 PM »
Just in case anyone missed it..

http://www.roger-mayer.co.uk/rm58.htm


Jeez what a tool. He sure changed his tune quite a bit since June 2009.

barclaycon

Re: Roger Mayer RM57 build?
« Reply #51 on: September 10, 2010, 11:22:44 AM »
Unbelievable huh ?!

I'm tempted to email him back.
What do you think ?


Can anybody login to that forum and grab the schematics/ technical info ?
There's something about the FET that might be useful.
« Last Edit: September 10, 2010, 11:34:33 AM by barclaycon »

kato

Re: Roger Mayer RM57 build?
« Reply #52 on: September 10, 2010, 11:42:51 AM »

I'll put it in the google account.

barclaycon

Re: Roger Mayer RM57 build?
« Reply #53 on: September 10, 2010, 01:07:20 PM »
Thanks very much for the Roger Mayer pdf.
Somebody on that stompboxes forum (Hotrats) said something about choice of FET (2N3820).

the schematic was lent to me by an extremely generous chap over at ProdigyPro who basically gave me the password to his huge ftp site - I haven't even gone through half of it yet ... says he, some of the first RM58 clones are supposed to be making their way out shortly ... interesting data about that 2n3820 jFET, it has Idss lying between 0.3mA and 15mA ... what a spread !

Can't find that info anywhere (!)
Any clues ?
« Last Edit: September 10, 2010, 01:09:44 PM by barclaycon »

kato

Re: Roger Mayer RM57 build?
« Reply #54 on: September 10, 2010, 07:39:59 PM »
ftp.thehouseofloud.com
user:  schematics
password:  [email protected]#$

thomasdf

Re: Roger Mayer RM57 build?
« Reply #55 on: December 09, 2011, 06:42:08 PM »
Hi folks, any news about this drawing? I'm really dying to build up that beauty. Lemme know if I can be of any help...

Thomas

pedroplanet

Re: Roger Mayer RM57 build?
« Reply #56 on: December 09, 2011, 09:00:03 PM »
Quote
ftp.thehouseofloud.com
user:  schematics
password:  [email protected]#$

I couldn't find the schematics there...  :-\

dustbro

Re: Roger Mayer RM57 build?
« Reply #57 on: December 10, 2011, 10:02:12 PM »
I have a pcb etched and ready to go... just waiting on some rare transistors to make their way to my shop.

pedroplanet

Re: Roger Mayer RM57 build?
« Reply #58 on: December 10, 2011, 11:24:19 PM »
Quote
I have a pcb etched and ready to go... just waiting on some rare transistors to make their way to my shop.

Could you possibly share it with us?  :D

Re: Roger Mayer RM57 build?
« Reply #59 on: December 16, 2011, 06:00:17 AM »
I've placed an 11 page pdf in the groupdiy email account regarding the rm58. I'm sure it is the same as the one previously mentioned, but in case anyone has missed it, then there it is. It includes schematics and connections although it doesn't list every transistor type unfortunately!
Chris


 

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