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 Forum index » DIY Hardware and Software
Buchla 259
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sanssoma259



Joined: Mar 10, 2013
Posts: 3
Location: Spain

PostPosted: Sun Mar 10, 2013 3:03 pm    Post subject: Buchla 259 Reply with quote  Mark this post and the followings unread

I just wanted to start a thread to open up interest in remaking the 259.

There seemed to be some progress awhile ago, but nothing as of late.

The 258 has come a long way, but the trail seems to lead to a dead end in
regards to the 259.

Has anyone made any progress???

Would be awesome to get the 259 up and running! Razz
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phdinfunk



Joined: Jun 04, 2008
Posts: 115
Location: Taiwan

PostPosted: Sun Mar 10, 2013 6:59 pm    Post subject: Reply with quote  Mark this post and the followings unread

Been working on this for a couple of years.

I have a specimen in which all circuits work and it sounds very nice.... part of the problem is that I've never had my hands on an original.

However, an E-Mer was kind enough to send me some audio from an original and I'm comparing with the functions of mine to make sure the ranges and everything are within normal...... This is the stage I'm currently at.

--Jonathan
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n.d



Joined: Dec 15, 2011
Posts: 20
Location: Argentina

PostPosted: Fri May 17, 2013 7:37 pm    Post subject: Reply with quote  Mark this post and the followings unread

So, no news?
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phdinfunk



Joined: Jun 04, 2008
Posts: 115
Location: Taiwan

PostPosted: Tue May 21, 2013 12:20 am    Post subject: 259
Subject description: Still working....
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Mine is SMT, and sounds like this:

http://soundcloud.com/phdinfunk/syncing-princ-osc

http://soundcloud.com/phdinfunk/timbre

http://soundcloud.com/phdinfunk/symmetry-effect

You can see a few other clips on my soundcloud. We're simultaneously improving a few bits here and there, while making these PCBs.

It's been remarkably difficult to know if I should keep posting, or just wait until the run is done, post pics of PCBs. There are always setbacks in R&D.

I get a lot of requests for information about these every month, and I keep a list of people who PMed me.....

Regarding the corrections to the schematic... ahah, actually, I've been meaning to keep a log of those and try to post more info. There are so many little errors. For example, just the switching arrangements for the modulation section are setup wrong... when I first built that, only Sync worked. The mod section is messed up. I couldn't get Symmetry to work correctly until LAST WEEK, when I happened to see an error I had made in redrawing the schematic at the sine wave output on the principal oscillator.....

If you ever wonder how R&D goes so slow, even at gigantic, well-funded companies, and how no one ever meets deadlines.... I recommend trying to R&D a big project some time. This also explains why no one should EVER sell anything if it's not on hand, in stock, ready to go...

--Jonathan

http://phdinfunk.com
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