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DIY Stompboxes => Building your own stompbox => Topic started by: tj7 on June 25, 2009, 09:57:10 PM

Title: how to get that classic vintage mutron III auto wah sound?
Post by: tj7 on June 25, 2009, 09:57:10 PM
hello,

i was looking into the byoc envelope filter / auto wah as a potential stand-in for the vintage mutron III (which is hard to find and very darned expensive).  i want that early police era andy summers 'hole in my life' sound (which he used a mutron III for).  i asked byoc about this and the reply from keith was 'not really' when i asked if the pedal would do the job.

any suggestions out there from those who know what i'm yabbering about?  ie potential mods to the byoc which would make it a closer representation, or even other pedals which are much more affordable...?
Title: Re: how to get that classic vintage mutron III auto wah sound?
Post by: Radamus on June 26, 2009, 03:02:15 AM
If you're looking for something to build (I know you mentioned buying in there) then I would recommend the meatball. It's a really variable envelope filter. I built one and I like it. Pretty complex, though. The Geofex site used to have a link to the mutron III schematic, but it is 404 right now. I may have the schematic sitting around to email to you if you'd like.

In terms of buying, a Qtron is probably close.

Hope that helps.

Conrad
Title: Re: how to get that classic vintage mutron III auto wah sound?
Post by: nosamiam on June 26, 2009, 03:31:43 AM
Quote from: Radamus on June 26, 2009, 03:02:15 AM
The Geofex site used to have a link to the mutron III schematic, but it is 404 right now.

Link seems to be working.
Title: Re: how to get that classic vintage mutron III auto wah sound?
Post by: tj7 on June 26, 2009, 05:16:01 AM
Quote from: Radamus on June 26, 2009, 03:02:15 AM
If you're looking for something to build (I know you mentioned buying in there) then I would recommend the meatball. It's a really variable envelope filter. I built one and I like it. Pretty complex, though. The Geofex site used to have a link to the mutron III schematic, but it is 404 right now. I may have the schematic sitting around to email to you if you'd like.

In terms of buying, a Qtron is probably close.

Hope that helps.

Conrad

hi, thanks for your tips.  i'll look into the qtron but i'd love to find that schematic.  the main site http://www.geofex.com/schemata.htm  is up but the mutron schematic is gone...  http://www.compassnet.com/~cjlandry/schems/schemdir.html     please do let me know if you have it -   
t j 0 0 0 7 @ g m a i l . c o m
cheers!!
Title: Re: how to get that classic vintage mutron III auto wah sound?
Post by: tj7 on June 26, 2009, 09:38:19 AM
how close is this to the mutron III...? 

http://www.geofex.com/PCB_layouts/Layouts/neutronpub.pdf

i found the original here - http://synthetizer-sche.chez-alice.fr/divers/mutron3.jpg

is everything i need to know there?  (i have a friend who builds pedals....)

plus some interesting stuff:
http://www.lynx.bc.ca/~jc/pedalsMutronIII.html
http://www.lynx.bc.ca/~jc/mutron3.gif
modded clone schematic:
http://www.lynx.bc.ca/~jc/moddedMutron3.gif
Title: Re: how to get that classic vintage mutron III auto wah sound?
Post by: chi_boy on June 26, 2009, 11:07:41 AM
Doesn't GGG have a Mutron III board for sale?  I thought I had one in my ToDo stack.
Title: Re: how to get that classic vintage mutron III auto wah sound?
Post by: R.G. on June 26, 2009, 11:50:45 AM
Quote from: tj7 on June 26, 2009, 09:38:19 AM
how close is this to the mutron III...? 
http://www.geofex.com/PCB_layouts/Layouts/neutronpub.pdf
The Neutron *is* a clone of the Mutron, part for part, with the exception that
there are added options for powering from an single power supply /battery instead
of the dual that the original required, and added options for the opto resistor part,
which is hard to find (but Small Bear has them).

GGG has PCBs from my layout for the Neutron. Hundreds of people have built
working clones from them.
Title: Re: how to get that classic vintage mutron III auto wah sound?
Post by: tj7 on June 26, 2009, 07:08:10 PM
Quote from: R.G. on June 26, 2009, 11:50:45 AM

GGG has PCBs from my layout for the Neutron. Hundreds of people have built
working clones from them.


ok!  i've googled 'ggg' but no joy - may i have the url please...?
cheers!!
Title: Re: how to get that classic vintage mutron III auto wah sound?
Post by: frequencycentral on June 26, 2009, 07:10:06 PM
http://www.generalguitargadgets.com/
Title: Re: how to get that classic vintage mutron III auto wah sound?
Post by: mdh on June 26, 2009, 07:11:38 PM
Beat to the punch, but here's the direct link: Mutron III Clone (http://www.generalguitargadgets.com/index.php?option=com_content&task=view&id=112&Itemid=26).
Title: Re: how to get that classic vintage mutron III auto wah sound?
Post by: petemoore on June 27, 2009, 11:24:34 AM
  Just back from the Shack, got cadmium sulfide LDR's, green LED's...hope that works out..
  Worth a try, I can order some NSL32's or something if needed.
  Buncha perfboard/sockets/caps...
  Here goes !
  Going to start a Neutron Filter build.
  About time...wish me luck !
Title: Re: how to get that classic vintage mutron III auto wah sound?
Post by: Ed G. on June 28, 2009, 12:27:27 AM
Good luck with the build! Start practicing those Jerry Garcia licks!
Title: Re: how to get that classic vintage mutron III auto wah sound?
Post by: petemoore on June 28, 2009, 12:35:51 AM
  The Penguine of course should have one of these effects on his guitar tone !