Someone asked me if I could build one. I have what looks to be a scan of a factory schematic, but it's kind of fuzzy and the values aren't shown too clearly. Anyone have something a little clearer or more complete?
Looking over it, it had never occurred to me before that there is a Green Ringer built in. When one presses the "Ringer" switch on the unit, that's actually what you get!
There is a vague outline of a switch that seems to be part of the power supply, which could be the "Stabilize" switch ( http://filters.muziq.be/model/musitronics/octavedivider ) but it is not clear enough in the scan to give many clues as to what it does.
did some 'Googling' while the tools were going through yet another yo-yo cycle ...
The Octave divider seems really difficuly to find, you can buy them it seems ... the only other thing I found, was link to hand drawn one here,
http://www.basslinks.nl/xmb/viewthread.php?tid=5092
Not very clear either ...
A member was kind enough to send me a drawing. Looks feasible.
I used to have one of those I used with bass. They are really nice and track great.
Worth knocking one's self out over instead of merely muying a Micro-Pog?
Quote from: Mark Hammer on May 23, 2008, 09:07:16 AM
Worth knocking one's self out over instead of merely muying a Micro-Pog?
Depends on how much you'd like the bragging rights!
In the Art Thompson stompbox book, I believe Dan Armstrong takes credit for suggesting the Green Ringer be added to the Octave Divider. Octave down and a GR does sound cool - I've used my Blue Box with one and I think there are even some clips if you search here.
that schematic would be nice to see. the effect sounds great in this clip: http://www.youtube.com/watch?v=NSiACMzEKRM
Quote from: birt on May 23, 2008, 10:01:57 AM
that schematic would be nice to see. the effect sounds great in this clip: http://www.youtube.com/watch?v=NSiACMzEKRM
Agreed, shure would love to see it, if it's possible :)
/Krister
Heres a copy of the factory service manual someone from here gave me a few years ago. It's got parts lists, layout, and a readable schematic. No pcb pattern unfortunately.
Mutron Octave Divider Service Manual (http://homepage.mac.com/sonicvi/mutronoctave.pdf)
Quote from: SonicVI on May 23, 2008, 11:00:01 AM
Heres a copy of the factory service manual someone from here gave me a few years ago. It's got parts lists, layout, and a readable schematic. No pcb pattern unfortunately.
Mutron Octave Divider Service Manual (http://homepage.mac.com/sonicvi/mutronoctave.pdf)
Oustanding!! Thanks so much. Very very useful.
What the hell does the "Stabilize" switch do? ??? ???
Quote from: Mark Hammer on May 23, 2008, 11:36:55 AM
What the hell does the "Stabilize" switch do? ??? ???
I have no idea. I had one of these back in the 90's and I could never tell any difference with the stabilize on or off. I also couldn't really tell much difference with the ringer on so mine might have had problems. As far as I can remember it was a very good sounding octave divider but I remember at the time not thinking it was significantly better than the EH or Boss Octave dividers, but then many people seem to disagree with that. I definitely don't think they're worth the $750 theyre going for now.
Nice!
I want one really bad, wish there was a pcb to buy :)
Quote from: SonicVI on May 23, 2008, 11:00:01 AM
Heres a copy of the factory service manual someone from here gave me a few years ago. It's got parts lists, layout, and a readable schematic. No pcb pattern unfortunately.
Mutron Octave Divider Service Manual (http://homepage.mac.com/sonicvi/mutronoctave.pdf)
Thanks!
/Krister
A friend of mine has been wanting me to clone his forever. The schems I was able to find gave me a headache though!
--Brad
The service manual that SonicVI links to above shows a component view of the boards. It would appear that:
a) there are many components shown that are much smaller today than they were in 1977 or whenever,
b) the power supply doesn't need to be as complex as shown, and
c) the transformer can easily be an AC wallwart (with regulation in the pedal itself).
If one used SIP dual op-amps, and toggles instead of rocker switches, this could easily fit in a much smaller case than it did back then.
this sounds like a challenge for some brave diy-ers.... ::)
Quote from: Mark Hammer on May 23, 2008, 11:36:55 AM
What the hell does the "Stabilize" switch do? ??? ???
Helps with the tracking.
Here's a recording done with one. It's subtle, but you can hear it on the bass, especially on the last lick played. It was actually the guitar players, but I used it the whole time until that version of the band broke up.
Other details... it's a '73 Ric 4001 with flatwounds, a Hi-A pickup at the bridge, and a Gibson Sidewinder (mudbucker) at the neck played with a pick. The signal chain was probably an MXR AC Limiter, the Mutron, then DI. This was from about 1984. :icon_mrgreen:
The Jetsonz - Beat the Clock (http://david-schwab.com/music/beat_the_clock.mp3)
Quote from: SonicVI on May 23, 2008, 11:00:01 AM
Heres a copy of the factory service manual someone from here gave me a few years ago. It's got parts lists, layout, and a readable schematic. No pcb pattern unfortunately.
Mutron Octave Divider Service Manual (http://homepage.mac.com/sonicvi/mutronoctave.pdf)
Cool! Another project I don't have time for! That and building a Maestro Bass Brassmaster. Wish I had at least kept my broken Brassmaster's case.
I had started working on a layout for this after I saw Larry Graham's display on youtube (like I'll ever sound like that! ;D). Anyhow, my layout is an attempt at duplicating from the svc manual, and by no means is smaller. I don't want to try to do that. My brain is working hard enough as it is... ;D At any rate, this is what I've got, for the 1st board (that connects to the 2nd through some pins/headers). I'll have to wire the dc to the chips with floating wires though, as I ran out of space. Maybe this will help someone who's thinking about redoing this one. I'd sure as hell like to get this pedal. Almost bit the bullet and tried to get one on ebay, but alas, it went outta my $$$ range. Back to the layout... I've got the routing ready for the lower board, just have to draw it up. I'm using CADStd to do all this work - seems really straightforward to me, and kinda ol skool. Besides, I don't have time or the will to learn a PCB layout program... Anyhow, enough chat... this is what i got:
(http://thumbs.villagephotos.com/22830323.jpg)
http://img.villagephotos.com/p/2006-3/1166256/attempt.gif (http://img.villagephotos.com/p/2006-3/1166256/attempt.gif)
PS, how the heck do you make a thumbnail link to the original sized image?
-- Jesus
if i´m not mistaken, our member hank reynolds 3rd did a layout for that years ago that was almost finished, no ? just the power supply was missing, and 2 or 3 people have actually built it if i understand everything right ??
http://www.diystompboxes.com/smfforum/index.php?topic=52169.0 (http://www.diystompboxes.com/smfforum/index.php?topic=52169.0)
http://www.diystompboxes.com/smfforum/index.php?topic=35377.0 (http://www.diystompboxes.com/smfforum/index.php?topic=35377.0)
http://www.diystompboxes.com/smfforum/index.php?topic=43881.0 (http://www.diystompboxes.com/smfforum/index.php?topic=43881.0)
cheers,
lowstar
hmm
the link seems to be dead on the layout hank did
If you're talking about these links: geocities.com/munkydiy/mubd1.jpg geocities.com/munkydiy/mubd2.jpg
...you have to "graft" them.
Thse links should bring up the images. They work for me.
http://www.geocities.com/munkydiy/mubd1.jpg
http://www.geocities.com/munkydiy/mubd2.jpg
Note that what you will see is not a ready-for-transfer pattern. They are pencil and paper drawings. The pattern may well work flawlessly for all I know, but it isn't quiiiiiiiiiiiiite ready just yet. Big head start, though.
a very good drawing to have near when you start doing the layout on the computer
Some work derived off the "munkydiy" layout. Audio section for now...
Schematic: http://img.villagephotos.com/p/2006-3/1166256/AUDIO_SCHEMATIC.jpg
(http://img.villagephotos.com/p/2006-3/1166256/AUDIO_SCHEMATIC.jpg)
Overlay: http://img.villagephotos.com/p/2006-3/1166256/AUDIO_pcb_OVERLAY.jpg
(http://img.villagephotos.com/p/2006-3/1166256/AUDIO_pcb_OVERLAY.jpg)
Wires/Hookups: http://img.villagephotos.com/p/2006-3/1166256/WIRES.jpg (http://img.villagephotos.com/p/2006-3/1166256/WIRES.jpg)
Next step - do the logic section and order some parts... put together and see what happens. Munky's logic layout seems a bit different from the schematic though. Anyone got any ideas about this?
Cheers,
Jesus
I was listening to Ritchie Blackmore's Rainbow from 1996 in the car this morning, and he appears to use an octave divider in one or two solos, which adds a new dimension to his incredible playing - I have to say that having listened to and watched this man play over the last 46 years, he is safely in the top 2 guitarists of all time - both of whom are English :icon_lol: :icon_lol: :icon_lol:
So what's happening with this? Jesus: did you get any further with the PCB layout? I'd be happy to finish it from the schematic if you could send me the file.
Hows this build going Mark,any luck yet?
Nope.
No further here - been busy. The schematic's on the 1st page, via a PDF link. Go for it. I'll build this thing some future day. Never started the logic section.