HEY PEAKE... the 258

numbernone · Joined: Aug 16, 2006 Posts: 477 Location: new york city

Mike,

While wading thru the intense bitch session over at Modularsynth.net, I couldnt help but notice you mentioning your intention to loose your PCB design for the 258 oscillator on the world.

I think you will find a much more pleased audience over here, where everyone is hungry to explore, and not get overly stuck on trying to crush others opinions and spirits.

Let me be the first to sing praises to the heavens for this bounty!!!

Peake · Posted: Mon Aug 04, 2008 9:08 am Post subject:

http://ebolatone.blogspot.com/2011/05/buchla-258b-remake-project.html

See my post on page two for a complex Buchla soundbite.

There are at least two other new DIY projects related to the 258 going on at this moment; I don't know if both or either will be publicly available, or if they're solely for the individuals building them. One of them replaces the uA726, which I can understand, but that might well change things. Most of my favorite oscillators use that IC... I don't know about the other project.. I have enough 726s to take care of myself, but do other folks?

Since I'm doing this for myself regardless, it wouldn't be a problem to simply post the artwork, if Don has no problem with my so doing. It's also not a problem to me if he says no, if no one wants to use them after I post them, or if others release finished or DIY projects.

Oh, and you're going to need a vintage power supply Wink

bubblechamber · Posted: Mon Aug 04, 2008 11:26 am Post subject:

elektro80 · Posted: Mon Aug 04, 2008 11:30 am Post subject:

Right... uh... the Behringer Convolution Pro PSU ? Shocked

Blue Hell · Posted: Mon Aug 04, 2008 11:35 am Post subject:

elektro80 · Posted: Mon Aug 04, 2008 11:38 am Post subject:

elektro80 · Posted: Mon Aug 04, 2008 11:39 am Post subject:

The Deluxe model has something they call "The Tesla Surprise" Shocked

elektro80 · Posted: Mon Aug 04, 2008 12:28 pm Post subject:

A convolution power supply that can mimic old and nasty power supplies?

Blue Hell · Posted: Mon Aug 04, 2008 12:41 pm Post subject:

It wouldn't be vintage ... likewise I was thinking we needed internet hum servers, 60 Hz for Buchlas and Moogs ... but not vintage either ... no other way than to import your own power plant I'm afraid ... there could be some CO₂ emission issues, but with a bit of money that shouldn't be a real problem.

Peake · Posted: Mon Aug 04, 2008 8:14 pm Post subject:

You can do what makes you giggle- I have a vintage Buchla power supply, and I'm not afraid to use it. You'd best cover your sensitive ears, as they might likely be offended beyond repair Shocked

Peake · Posted: Mon Aug 04, 2008 8:56 pm Post subject:

Wait- I have absolutely horrific news- If you have listened to my track "Impart/Tangent_Buchla200", you have heard a vintage power supply. Same with "Sunday in the Park with Borg".

You may require therapy Shocked

Edit: virb.com/peake

bubblechamber · Posted: Mon Aug 04, 2008 10:11 pm Post subject:

speaking of ua726... anyone ever tried them from HSS? any other sources? i've been looking for a while and i've come up empty

Peake · Posted: Mon Aug 04, 2008 10:30 pm Post subject: Re: HEY PEAKE... the 258

Luka · Joined: Jun 29, 2007 Posts: 1003 Location: Melb.

im interested.

buchla just uses some switching psu eh?

is it a problem just to using rectified psu and then dropping voltage down to specified range? i really have no clue of the power specs buchla runs on

mono-poly · Posted: Tue Aug 05, 2008 2:19 am Post subject:

Peake · Posted: Tue Aug 05, 2008 3:12 am Post subject:

BTW, regardless of any amount of distraction, I will continue, even if only for myself. I have another "clone" in the works which I cannot share because it is of something currently in production. Do YOU have anything like that in your list of projects?

bubblechamber · Posted: Tue Aug 05, 2008 10:13 am Post subject:

thanks mono-poly. Soundukdave has never come up on my ebay searches. now i just need to suck it up and order a few.
d

scriptstyle · Joined: Jan 22, 2008 Posts: 250 Location: nj

Peake · Posted: Tue Aug 05, 2008 11:22 am Post subject:

I'm typing this from the 13th floor.

How lovely that people are interested in the things that I most like: Trine phasers, Solina chorus, Dimension D, SEM oscillators, Roland filters Laughing

and now the Buchla gear. I feel better about my years of pointing out Buchla gear as the diamond mine that it is, if it has helped raise interest and even helped along modules based upon it (even if you completely lose the Buchla tactile experience). The world is becoming more of what I like Very Happy

Peake · Posted: Tue Aug 05, 2008 2:12 pm Post subject: Re: HEY PEAKE... the 258

Blue Hell · Posted: Tue Aug 05, 2008 4:38 pm Post subject:

Peake · Posted: Tue Aug 05, 2008 7:25 pm Post subject:

Blue Hell · Posted: Wed Aug 06, 2008 2:19 am Post subject:

verbos · Joined: May 09, 2007 Posts: 15 Location: new york

paults · Joined: May 08, 2006 Posts: 21 Location: Fort Worth, TX

A clever tip that Neve uses in the Portico mic preamps is to use a 9V wall wart, to a +-18V switcher, then use linear post-regulation for the +-15V op amps (NE5532). The hard part is finding an off-the-shelf switcher that is not preset to either +-12V or +-15V. A compromise would use a +-15V output then regulate to +-12V via linears.

There are many useful app notes on low-noise switchers at Linear Technology's website: www.linear.com