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 Forum index » DIY Hardware and Software
[Order] Continuum Phase Shifter - Fabbed PCBs and Panels
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frequencycentral



Joined: May 25, 2008
Posts: 186
Location: UK

PostPosted: Wed Apr 24, 2013 6:16 pm    Post subject: [Order] Continuum Phase Shifter - Fabbed PCBs and Panels Reply with quote  Mark this post and the followings unread

This one has been a long time coming! Brand spanking new fabbed PCBs are now in stock. Panels are on order and should arrive within 4 weeks. The panels are 10HP and are basically the same as shown below, with the exception that the 'Frequency Central' logo will be in mirror image.

If you want just a PCB or two you can order now they'll be shipped right out.

If you want PCB + panel you can order now but please allow about 5 weeks for delivery.

Continuum PCB: £15 GBP
Continuum Panel: £15 GBP

Shipping:
Please add £3 GBP if you're outside Europe.

Paypal to:

payments(AT)frequencycentral.co.uk

....don't forget to replace the (AT) with @

Posted Image, might have been reduced in size. Click Image to view fullscreen.

Posted Image, might have been reduced in size. Click Image to view fullscreen.

Posted Image, might have been reduced in size. Click Image to view fullscreen.

Posted Image, might have been reduced in size. Click Image to view fullscreen.

Soundclips? First, let's phase some pink noise:

http://www.frequencycentral.co.uk/wp-content/uploads/2012/07/Continuum-Noise.mp3

So now, with a couple of VCOs as audio, let's send S/H into one CV input then an ADSR into the other, while slowly turning up the resonance:

http://www.frequencycentral.co.uk/wp-content/uploads/2012/07/Continuum-SH-Env.mp3

Now, a single VCO as audio, with ADSR to one CV input of Continuum, and slowly introducing a -1oct sub osc to the other CV input:

http://www.frequencycentral.co.uk/wp-content/uploads/2012/07/Continuum-FM1.mp3

Some Continuum ping action! Using a Roland ADSR to ping it, and a couple of tap tempo LFOs synced with a clock divider to modulate it. There's some serious bottom end going on there, better hook up your playback device to your nearfields...:

http://www.frequencycentral.co.uk/wp-content/uploads/2013/02/Continuum-Pings.mp3

Finally, here's how it sounds phasing my RS-09:

http://www.frequencycentral.co.uk/wp-content/uploads/2012/07/Continuum-RS09.mp3

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StephenGiles



Joined: Apr 17, 2006
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PostPosted: Thu Apr 25, 2013 10:46 am    Post subject: Reply with quote  Mark this post and the followings unread

Can it do Through Zero Phasing?
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Mongo1



Joined: Aug 11, 2011
Posts: 411
Location: Raleigh NC

PostPosted: Fri Apr 26, 2013 8:11 am    Post subject: Reply with quote  Mark this post and the followings unread

Very cool project - before I order it, I had four small questions.

[note - I feel like the Spanish Inquisition sketch - I started out with 2 questions, but I keep adding more. ]

[note 2- I looked around your website and found the answer to most of my questions - here is the link to the document: ]
http://www.frequencycentral.co.uk/wp-content/uploads/2013/02/Continuum-Build-Doc.pdf

1) I see LM13700s, but are the other ICs anything difficult, or just common op-amp stuff?
Answer - Nope - just plain vanilla components


2) Can this run on +/- 15v?


3) What does the "Even/Odd" switch do?
Answer Regenerates even or odd stages - This would be a nice thing for an audio demo...

4) How many stages does the phase shifter have?
Answer - 4 Stages

Thanks
Gary
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frequencycentral



Joined: May 25, 2008
Posts: 186
Location: UK

PostPosted: Sat Apr 27, 2013 2:28 am    Post subject: Reply with quote  Mark this post and the followings unread

1. Other ICs are TL084 and TL072, somehow the screenprint was missed.

2. Runs fine on +/-15V

3. Odd/Even refers to the number of stages in the resonance path, Odd is more pronounced, but Even has it's charms too. Example, first riff Odd, second riff Even:

http://www.frequencycentral.co.uk/wp-content/uploads/2012/07/Continuum-Odd-Even.mp3

4. Technically 6 stages, 4 swept, 2 fixed.

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StephenGiles



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PostPosted: Sat Apr 27, 2013 6:46 am    Post subject: Reply with quote  Mark this post and the followings unread

StephenGiles wrote:
Can it do Through Zero Phasing?


Are you still thinking about my humble question?
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frequencycentral



Joined: May 25, 2008
Posts: 186
Location: UK

PostPosted: Sat Apr 27, 2013 7:32 am    Post subject: Reply with quote  Mark this post and the followings unread

StephenGiles wrote:
StephenGiles wrote:
Can it do Through Zero Phasing?


Are you still thinking about my humble question?


Sorry Stephen, not TZ.

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Mongo1



Joined: Aug 11, 2011
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PostPosted: Sat Apr 27, 2013 9:24 am    Post subject: Reply with quote  Mark this post and the followings unread

Hi again,

I noticed in the documentation that you said R46 was related to regeneration, and should not be stuffed.

If I wanted to have a regen control, would it make sense to have a 10K pot in that position?

Thanks
Gary
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frequencycentral



Joined: May 25, 2008
Posts: 186
Location: UK

PostPosted: Sat Apr 27, 2013 9:44 am    Post subject: Reply with quote  Mark this post and the followings unread

Mongo1 wrote:
Hi again,

I noticed in the documentation that you said R46 was related to regeneration, and should not be stuffed.

If I wanted to have a regen control, would it make sense to have a 10K pot in that position?

Thanks
Gary


Already has a regen control, 'Res' on my panel = regen

The 10K resistor tames the regen in a somewhat musical way, however if you want wild self oscillation you can reduce the resistor, say 4K7.

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StephenGiles



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PostPosted: Sat Apr 27, 2013 12:43 pm    Post subject: Reply with quote  Mark this post and the followings unread

frequencycentral wrote:
StephenGiles wrote:
StephenGiles wrote:
Can it do Through Zero Phasing?


Are you still thinking about my humble question?


Sorry Stephen, not TZ.


Wouldn't it just need a few static all pass filters configured to give a few usec delay?
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StephenGiles



Joined: Apr 17, 2006
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PostPosted: Sat Apr 27, 2013 11:53 pm    Post subject: Reply with quote  Mark this post and the followings unread

http://www.diystompboxes.com/smfforum/forums.html?topic=25168.0

This old thread includes a circuit for a 0.5msec analog delay, intended for TZF using only one BBD. However there could be some mileage in trying this with a phaser.....a la Eventide!
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