Engl RB100 floor pedal preamp

armkon · Post by **armkon** » 13 Apr 2009, 20:21

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

himister · Post by **himister** » 15 May 2009, 00:35

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!

Cheers!

a.narloch · Post by **a.narloch** » 04 Aug 2009, 19:14

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

bajaman · Post by **bajaman** » 04 Aug 2009, 21:21

none of the previous poster's links work

bajaman

a.narloch · Post by **a.narloch** » 05 Aug 2009, 11:38

i got few schematics of Engl RB:

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.

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..

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

greetings

himister · Post by **himister** » 05 Aug 2009, 18:25

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

himister · Post by **himister** » 05 Aug 2009, 19:16

http://www.schematicheaven.com/bargainb ... preamp.pdf

a.narloch · Post by **a.narloch** » 05 Aug 2009, 20:18

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

http://www.elektroda.pl/rtvforum/viewto ... =engl&sid= in this subject I find pcb

a.narloch · Post by **a.narloch** » 06 Aug 2009, 12:41

himister wrote:http://www.schematicheaven.com/bargainb ... preamp.pdf

I got this schematic too but I think it got erros becouse in the schematic missing cathode caps.

himister · Post by **himister** » 06 Aug 2009, 14:04

http://www.elektroda.pl/rtvforum/viewto ... =engl&sid= in this subject I find pcb

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.

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

dimych · Post by **dimych** » 08 Sep 2009, 18:46

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

rcustoms · Post by **rcustoms** » 14 Dec 2021, 03:54

i found this