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Davesax1965 
Forum Senior Member 
Joined: May 23 2013 Location: UK Status: Offline Points: 2839 |
 Topic: The mighty audio generatorPosted: December 17 2016 at 07:08 |
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The generator effects are housed in the top wooden box. You can see the power supply and transformer in it.
The box below contains some electrickery I've built and will be used for another project - the Uber Theremin. ;-) |
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Davesax1965
Forum Senior Member
Joined: May 23 2013 Location: UK Status: Offline Points: 2839 |
Posted: December 17 2016 at 07:06 |
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Update. ;-)
After a lot of hammering noises in the garage, we're getting very close to a "mains on" test. ;-)  |
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2dogs
Forum Senior Member
Joined: December 03 2011 Location: England Status: Offline Points: 705 |
Posted: October 25 2016 at 12:03 |
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LOL I assume you are a true expert
 . The photo is Cluster around 1972 and appears in the book "Krautrock, Cosmic Rock and its Legacy". |
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Davesax1965
Forum Senior Member
Joined: May 23 2013 Location: UK Status: Offline Points: 2839 |
Posted: October 24 2016 at 05:57 |
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Blimey - where DID you find that photo ?
That's a Bruel and Kjaer Beat Frequency Oscillator, model 1024, in the middle. ;-) |
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2dogs
Forum Senior Member
Joined: December 03 2011 Location: England Status: Offline Points: 705 |
Posted: October 22 2016 at 09:20 |
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Ooh those generators make some lovely sounds, and I also enjoyed ImaginaryLandscape. Do make sure to also provide your audiences with a memorable visual spectacle
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Davesax1965
Forum Senior Member
Joined: May 23 2013 Location: UK Status: Offline Points: 2839 |
Posted: October 15 2016 at 09:18 |
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More of this rubbish at
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Davesax1965
Forum Senior Member
Joined: May 23 2013 Location: UK Status: Offline Points: 2839 |
Posted: October 07 2016 at 05:15 |
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Audio generator coming on. This is one of a pair I'm building, the other is slightly different.
The sub frame is nearly built (that's Eurorack on the bottom) - there's a 5U rack shelf to add to carry the weight of the generator and scope. I've got to build a power supply / distribution board for the Eurorack modules (got the PCB's, waiting for parts and a toroidal transformer.) A nice custom wooden rack case is also on order. So this effectively has a hand built modular synth attached to it. Just add oscillators and you've also got a full fledged analogue modular synthesizer.  Edited by Davesax1965 - October 07 2016 at 05:16 |
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Davesax1965
Forum Senior Member
Joined: May 23 2013 Location: UK Status: Offline Points: 2839 |
Posted: October 04 2016 at 08:56 |
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It's an Advance J1-B, on top with the big vernier dial. This is a later model and a development of the H-1, below.
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Davesax1965
Forum Senior Member
Joined: May 23 2013 Location: UK Status: Offline Points: 2839 |
Posted: October 04 2016 at 08:55 |
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We are a two oscillator household now.
I got a brand spanking new one from 1965. ;-)  |
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Davesax1965
Forum Senior Member
Joined: May 23 2013 Location: UK Status: Offline Points: 2839 |
Posted: October 03 2016 at 07:12 |
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Silver Apples did indeed use audio generators. There were a dozen in a home made rack which was.... sort of a synthesizer.
A lot of newsprint has been generated about them, but the albums were... er. ;-)
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Davesax1965
Forum Senior Member
Joined: May 23 2013 Location: UK Status: Offline Points: 2839 |
Posted: October 03 2016 at 06:43 |
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Half of the synthesizer graveyard, a few synths missing off the video.(Korg and Minibrute) Audio generator and scopes I wonder what all this stuff does ? Edited by Davesax1965 - October 03 2016 at 06:44 |
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Atavachron
Special Collaborator 
Honorary Collaborator Joined: September 30 2006 Location: Pearland Status: Offline Points: 65239 |
Posted: October 02 2016 at 19:25 |
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Love those old machines, they remind me of the German stuff from the 1930s conspiracists think were used to distort time, de-materialize people, and soften the atomic structure of solid objects.
Let us know if your dog disappears and winds up in the basement. |
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"Too often we enjoy the comfort of opinion without the discomfort of thought." -- John F. Kennedy
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KingCrInuYasha
Forum Senior Member
Joined: September 26 2010 Location: USA Status: Offline Points: 1281 |
Posted: October 02 2016 at 18:50 |
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IIRC, didn't the Silver Apples use audio generators?
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He looks at this world and wants it all... so he strikes, like Thunderball!
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Mascodagama
Collaborator 
Honorary Collaborator Joined: December 30 2006 Location: United Kingdom Status: Offline Points: 5111 |
Posted: October 02 2016 at 10:55 |
They must have realised they have a mad scientist living next door by now though? 
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Davesax1965
Forum Senior Member
Joined: May 23 2013 Location: UK Status: Offline Points: 2839 |
Posted: October 02 2016 at 08:53 |
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PS Yep, Wien bridge. On the nosey, Dean. :-)
It's beginning to sound like Forbidden Planet here. https://soundcloud.com/brotherhoodofthemachine/generator To compound the insanity, I found a local lunatic selling the big brother to the Advance H-1 - a J1-B. So that should arrive this week. And I should be in the Macclesfield wicker man by about..... Wednesday. ;-) Thus.  Edited by Davesax1965 - October 02 2016 at 08:55 |
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Davesax1965
Forum Senior Member
Joined: May 23 2013 Location: UK Status: Offline Points: 2839 |
Posted: October 01 2016 at 10:10 |
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My brother didn't try circuit bending an old valve telly. He just assumed the capacitors had discharged.
Never seen anyone move so fast. ;-) Well, it's all coming along. This all goes into a 10U rack case, with a row of Eurorack modules on the bottom - nearly a whole modular synth. If interesting noises cannot be coaxed from that, I shall be most surprised. ;-) |
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Dean
Special Collaborator
Retired Admin and Amateur Layabout Joined: May 13 2007 Location: Europe Status: Offline Points: 37575 |
Posted: October 01 2016 at 09:53 |
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^ this is where the engineer in me conflicts with the wannabe electronic musician and the circuit-bending experimenter - the engineer thinks - Oh, I can fix that; the musicians say, Oooo - I can use that and the experimenter asks - Ah-ha, I wonder if I can make that happen at lower frequencies too?
 [not that I'd recommend anyone attempts to circuit-bend a valve oscillator even if they do know what they're doing and have the utmost respect for HT voltages - being thrown across the room tends to hurt no matter who you are].
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What?
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Davesax1965
Forum Senior Member
Joined: May 23 2013 Location: UK Status: Offline Points: 2839 |
Posted: October 01 2016 at 09:34 |
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Oh, it's everything between triangular and oval after 10k, Dean. ;-)
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Dean
Special Collaborator
Retired Admin and Amateur Layabout Joined: May 13 2007 Location: Europe Status: Offline Points: 37575 |
Posted: October 01 2016 at 09:23 |
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^ I can imagine - I presume that the sine generator is a Wien-bridge valve oscillator and the square is created from that by over-driving the output stage, so it will look pretty dreadful simply because of the technology used - I'd wager that the shape changes quite a bit with frequency too.
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What?
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Davesax1965
Forum Senior Member
Joined: May 23 2013 Location: UK Status: Offline Points: 2839 |
Posted: October 01 2016 at 08:43 |
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Oh, the square wave looks even worse. ;-)
File under "character". There's so much going on sonically that it's impossible to tell. Seems that a lot of ham radio users picked up H-1's, Dean. There are some J-1's out there as well. Might as well put them to a good use. Weighs a ton. It's like a T-72. |
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The mighty audio generator
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Davesax1965 wrote: