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Engl RB100 floor pedal preamp

Posted: 13 Apr 2009, 20:21
by armkon
i want to do an flour version of engl rb100 preamp from engl blackmore amp. I have schematics of this. I want to do it on pcb because that will be an pedal not an normal preamp. But i don't have so big skills to do an pcb can someone help me do the pcb for this preamp please?

i add file with schematics of engl preamp only thing you must to change is:
R26 change to half

Re: engl rb100 flour pedal preamp

Posted: 15 May 2009, 00:35
by himister
Hi. Interesting subject. Right now I'm doing something similar with Laney GH-VH preamp idea.
Here I've found the page that may help you. :)
It's Russian but I've run it through Google Translate and it's pretty much understandable.
There are few Engl variants with PCB layouts.

http://www.aznaur.spb.ru/azg-schemes.html

Hope that would be helpful! :D

Cheers!

Re: engl rb100 flour pedal preamp

Posted: 04 Aug 2009, 19:14
by a.narloch
i got few schematics of Engl RB:

https://www.freestompboxes.org/download/ ... ew&id=4086
this is from producent, but I hear that engl is so evil as mesa and they publish schematics with errors...

https://www.freestompboxes.org/download/ ... ew&id=4087
this schematics I found in the internet but I think it got erros too becouse in the schematics missing cathode caps.

https://www.freestompboxes.org/download/ ... ew&id=4088
this is the best schematic that I found, it was corrected and got mosfet follower.

i found pcb to ENGL RB 100 preamp but is incomplite .... The parts aren't marked... i started to mark parts on this pcb but I surrender.. :(

https://www.freestompboxes.org/download/ ... ew&id=4089
https://www.freestompboxes.org/download/ ... ew&id=4091
https://www.freestompboxes.org/download/ ... ew&id=4092

Can someone help me with this pcb? I add all files that i have about this amp.

greetings

Re: engl rb100 flour pedal preamp

Posted: 04 Aug 2009, 21:21
by bajaman
none of the previous poster's links work :cry:
bajaman

Re: engl rb100 flour pedal preamp

Posted: 05 Aug 2009, 11:38
by a.narloch
i got few schematics of Engl RB:
engl_bm.gif
this is from producent, but I hear that engl is so evil as mesa and they publish schematics with errors...

https://www.freestompboxes.org/download/ ... ew&id=4087
this schematics I found in the internet but I think it got erros too becouse in the schematics missing cathode caps.
22_1229024129.jpg
this is the best schematic that I found, it was corrected and got mosfet follower.

i found pcb to ENGL RB 100 preamp but is incomplite .... The parts aren't marked... i started to mark parts on this pcb but I surrender.. :(
35_1197994898.jpg
63_1197833897.jpg
Can someone help me with this pcb? I add all files that i have about this amp.

greetings

Re: engl rb100 flour pedal preamp

Posted: 05 Aug 2009, 18:25
by himister
a.narloch wrote:i got few schematics of Engl RB:
i found pcb to ENGL RB 100 preamp but is incomplite .... The parts aren't marked... i started to mark parts on this pcb but I surrender..
Could you find a link for the PCB or where have been downloaded, maybe there's a layout somewhere.
This one could be easily redrawn for a better but at least if we have the component layout.
At least pencil marks would be helpful or a couple more precise gut shots.
Cheers :thumbsup

Re: engl rb100 flour pedal preamp

Posted: 05 Aug 2009, 19:16
by himister

Re: engl rb100 flour pedal preamp

Posted: 05 Aug 2009, 20:18
by a.narloch
himister wrote:
a.narloch wrote:i got few schematics of Engl RB:
i found pcb to ENGL RB 100 preamp but is incomplite .... The parts aren't marked... i started to mark parts on this pcb but I surrender..
Could you find a link for the PCB or where have been downloaded, maybe there's a layout somewhere.
This one could be easily redrawn for a better but at least if we have the component layout.
At least pencil marks would be helpful or a couple more precise gut shots.
Cheers :thumbsup
http://www.elektroda.pl/rtvforum/viewto ... =engl&sid= in this subject I find pcb

Re: engl rb100 flour pedal preamp

Posted: 06 Aug 2009, 12:41
by a.narloch
I got this schematic too but I think it got erros becouse in the schematic missing cathode caps.

Re: engl rb100 flour pedal preamp

Posted: 06 Aug 2009, 14:04
by himister
A mess! :?
Didn't find anything useful there. Just another pcb drawing and it's inconclusive.
Guess the guy didn't want to upload whole material there.

I also guess that this project there was inspiring for you a.narloch?
It's a shit loads of work as I see. :lol:
Are you really into this Ritchie Blackmore preamp or any Engl variant, 'cause there are few other Engl preamp adaptations with complete pcb's!? I have downloaded complete pcb layout and schematic from the Russian site, link posted above.
Or some other 3 tube preamp? I work on this one https://www.freestompboxes.org/viewtopic.php?f=10&t=6847

Let me what you think.

Cheers :thumbsup

Re: engl rb100 flour pedal preamp

Posted: 08 Sep 2009, 18:46
by dimych
there is a lot of info on russian forum: http://forum.gtlab.net/cgi-bin/yabb2/Ya ... 1193308123 - this is about Engl mod but there is many other devices

Re: engl rb100 flour pedal preamp

Posted: 14 Dec 2021, 03:54
by rcustoms
i found this Image
Mr. Ritchie 1.2.JPG