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Uncle Krunkus
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Joined: Jul 11, 2005 Posts: 4761 Location: Sydney, Australia
Audio files: 52
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v-un-v
Janitor
Joined: May 16, 2005 Posts: 8933 Location: Birmingham, England, UK
Audio files: 11
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Posted: Fri Sep 16, 2005 1:22 am Post subject:
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r u gonna connect that to the vanity case ?!? ;D |
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Uncle Krunkus
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Joined: Jul 11, 2005 Posts: 4761 Location: Sydney, Australia
Audio files: 52
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Posted: Fri Sep 16, 2005 2:39 am Post subject:
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No, this will be for the bigger SL. _________________ What makes a space ours, is what we put there, and what we do there. |
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Loscha
Joined: Sep 03, 2005 Posts: 6 Location: Bendigo Australia
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Uncle Krunkus
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Joined: Jul 11, 2005 Posts: 4761 Location: Sydney, Australia
Audio files: 52
G2 patch files: 1
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Posted: Fri Sep 23, 2005 4:34 am Post subject:
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Yeah definately,
Mine came with the legs/speaker box too.
That was the first thing to go. Takes up too much space for my setup.
I did some research on the circuitry and it seems it produces notes using a master clock feeding a tone generator which has it output "divided" depending on which octave you are playing. There's no CV or Gate signal (which is what I want) So I've already begun completely re-building the guts. I've removed everything except the two keyboards and the "spring" switches which they operate. I'm looking at building the keyboard based on a constant current source which Ray designed
http://www.musicfromouterspace.com/analogsynth/keybrdcontroller.html
That's not to say that the original ciruitry can't be put to good use, I'm also working on another project (in my head) which will convert that to what is basically a chromatic "noise box". And the original PSU is a practice amp just waiting to be teamed with a decent (new) driver in a cool box +overdrive circuit.
These are the plans,
I've got two weeks holiday, so I better go and make a start on it!!
I'm putting a new precision +/- 15V PSU in the Baleani box and plan to make it the hub of my DIY synth setup. _________________ What makes a space ours, is what we put there, and what we do there. |
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Uncle Krunkus
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Joined: Jul 11, 2005 Posts: 4761 Location: Sydney, Australia
Audio files: 52
G2 patch files: 1
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Posted: Fri Sep 23, 2005 4:59 am Post subject:
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I just had a look at the pics. That drum section looks interesting. If it's anything like the advanced circuitry I found in mine there'll be a separate PCB for each drum which would actually be very cool from a circuit hacking point of view.
The Orgatron looks even cooler. The sound it makes can't possibly justify the weight so warm up your soldering iron and start making space for a new DIY synth!!
I'm thinking about covering the woodgrain laminate with black carpet! And maybe some big chrome corner covers like you get on bass bins!!
Can't wait. _________________ What makes a space ours, is what we put there, and what we do there. |
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Pehr
Joined: Aug 14, 2005 Posts: 1307 Location: Björkvik, Sweden
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Uncle Krunkus
Moderator
Joined: Jul 11, 2005 Posts: 4761 Location: Sydney, Australia
Audio files: 52
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Posted: Sun Oct 02, 2005 3:41 pm Post subject:
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Hey Pehr,
Now that looks very sweet indeed!!
I'm gonna use mine as the base for my whole DIY synth.
That one looks even better. 2*3.5+1!!!
If you want a copy of the precision +/-15V supply let me know.
Have fun.
Andrew _________________ What makes a space ours, is what we put there, and what we do there. |
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Loscha
Joined: Sep 03, 2005 Posts: 6 Location: Bendigo Australia
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Posted: Sun Oct 02, 2005 4:22 pm Post subject:
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the orgatron is battery powered, and extremely light
it's 85% air
I had it going again last night, I should post samples when I get around to putting in an external out. |
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Pehr
Joined: Aug 14, 2005 Posts: 1307 Location: Björkvik, Sweden
Audio files: 2
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Posted: Mon Oct 03, 2005 3:33 am Post subject:
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uncle-krunkus wrote: | Hey Pehr,
Now that looks very sweet indeed!!
I'm gonna use mine as the base for my whole DIY synth.
That one looks even better. 2*3.5+1!!!
If you want a copy of the precision +/-15V supply let me know.
Have fun.
Andrew |
Yes, that is what I am going to do too, but before I build a huge modular I want to control my Sound Labs with it.
I would really like a copy of that power supply
I assume that it works fine with Rays single bus CV?
Soon I'm going to open it and remove unnecessary parts and hopefully cut of the top part with the 2*3.5 keyboards. Right now it is a little too big. _________________ YouTube channel
flickr photostream
http://loxodrom.blogspot.com
http://www.garageband.com/artist/loxodrom
http://soundcloud.com/loxodrom |
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Uncle Krunkus
Moderator
Joined: Jul 11, 2005 Posts: 4761 Location: Sydney, Australia
Audio files: 52
G2 patch files: 1
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Posted: Mon Oct 03, 2005 7:18 am Post subject:
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Well I'm starting with the +/-15V PSU. Which will cover another synth board I have that runs off +/-15V. These two rails I run through a 7812/7912 pair and some caps to derive the SL (+/-12V) supply. These rails can then be run through a 7805/7905 pair for whatever needs 5V (if anything). That's the idea.
The 15V circuit is a precision regulator where I can actually dial up exactly +/-15V to come out of it. If you only want +/-12V for the SL a suitable transformer, regulators, & caps should do it. I've already built this one so I want to put it to good use. _________________ What makes a space ours, is what we put there, and what we do there. |
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Pehr
Joined: Aug 14, 2005 Posts: 1307 Location: Björkvik, Sweden
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Uncle Krunkus
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Joined: Jul 11, 2005 Posts: 4761 Location: Sydney, Australia
Audio files: 52
G2 patch files: 1
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Pehr
Joined: Aug 14, 2005 Posts: 1307 Location: Björkvik, Sweden
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Pehr
Joined: Aug 14, 2005 Posts: 1307 Location: Björkvik, Sweden
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Uncle Krunkus
Moderator
Joined: Jul 11, 2005 Posts: 4761 Location: Sydney, Australia
Audio files: 52
G2 patch files: 1
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Posted: Tue Oct 11, 2005 11:42 pm Post subject:
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Hey Pehr,
Have a look at this site,
http://www.organservice.com/crm/topdividers.htm#tosindex
it's info on all the old Top Octave Synth Chips like the M087B which runs my (and your?) Baleani Organ.
Now combine this info with Daniel's Oz.pdf
http://files.electro-music.com/phpbb-files/oz.pdf
And you have a whole new synth project to build from the chip which you pull out of your organ.
[moderator: cleaned up a long link --mosc] _________________ What makes a space ours, is what we put there, and what we do there. |
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Uncle Krunkus
Moderator
Joined: Jul 11, 2005 Posts: 4761 Location: Sydney, Australia
Audio files: 52
G2 patch files: 1
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Posted: Tue Oct 11, 2005 11:52 pm Post subject:
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Just wanted to let you in on a thing I discovered yesterday.
The springs which contact the bus bar when you press a key normally sit on a second bus bar when they are off. This second bus bar needs to be insulated when you convert the keyboard, otherwise it will short out your resistor ladder.
You can remove the bus bars completely but I covered mine with 3mm heatshrink instead. Take out the other one and gently polish it with some 1200 Wet & dry paper to improve the switching action.
I've taken a photo which might clarify it. I'll attach it later if you want.
See ya,
Andrew _________________ What makes a space ours, is what we put there, and what we do there. |
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Pehr
Joined: Aug 14, 2005 Posts: 1307 Location: Björkvik, Sweden
Audio files: 2
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Posted: Wed Oct 12, 2005 12:44 am Post subject:
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Nah, I just have a SN7403N-chip. Don't know what I can do with it... it is soldered to the pcb without a socket too
uncle-krunkus wrote: | Just wanted to let you in on a thing I discovered yesterday.
The springs which contact the bus bar when you press a key normally sit on a second bus bar when they are off. This second bus bar needs to be insulated when you convert the keyboard, otherwise it will short out your resistor ladder.
You can remove the bus bars completely but I covered mine with 3mm heatshrink instead. Take out the other one and gently polish it with some 1200 Wet & dry paper to improve the switching action.
I've taken a photo which might clarify it. I'll attach it later if you want.
See ya,
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The bus system in my organ was really messy and the mechanical parts continued down into the lower part of the organ (the "foot" part), which I want to remove. So I will build a whole new bus system somehow... _________________ YouTube channel
flickr photostream
http://loxodrom.blogspot.com
http://www.garageband.com/artist/loxodrom
http://soundcloud.com/loxodrom |
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Uncle Krunkus
Moderator
Joined: Jul 11, 2005 Posts: 4761 Location: Sydney, Australia
Audio files: 52
G2 patch files: 1
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