Author Topic: "Sonic Death Ray" Phaser - a phase insurrection!  (Read 55077 times)

doc_drop

Re: "Sonic Death Ray" Phaser - a phase insurrection!
« Reply #60 on: July 29, 2010, 12:52:55 PM »
So, I was told this thing goes, "Swwwwwwwwwoooooooooooooooooooosssssssssssssssssshhhhhhhhhhhhhhh! "
But, it sounds more like "WooooooowWoooooooooooooowWoooooow" to me. What's up with that? :icon_twisted:

Rick, I know the ROG Tri-Vibe has a sweet sine wave shaped LFO. Maybe you should look at that one?

I am definitely going to build one of these. It is too sexy not to!

slacker

Re: "Sonic Death Ray" Phaser - a phase insurrection!
« Reply #61 on: July 29, 2010, 01:12:45 PM »
That sounds great, I like the flangerish ringing in the first clip, almost like it's on the verge of self oscillating.

igerup

Re: "Sonic Death Ray" Phaser - a phase insurrection!
« Reply #62 on: July 29, 2010, 05:30:39 PM »
wow, that sounds cool and far out.

frequencycentral

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Re: "Sonic Death Ray" Phaser - a phase insurrection!
« Reply #63 on: July 31, 2010, 08:46:52 AM »
I had another idea about how to implement parity modulation. What if we add a single phase stage in the regen path, not fixed, but modulated by a single FET driven by it's own LFO? That way the regen signal would get flipped over between in phase and out of phase thus creating parity modulation?
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earthtonesaudio

Re: "Sonic Death Ray" Phaser - a phase insurrection!
« Reply #64 on: July 31, 2010, 08:57:49 AM »
I had another idea about how to implement parity modulation. What if we add a single phase stage in the regen path, not fixed, but modulated by a single FET driven by it's own LFO? That way the regen signal would get flipped over between in phase and out of phase thus creating parity modulation?

Implementing that as a phase shift stage would be interesting; because the "polarity" would be frequency dependent.  An alternative idea, somewhere between this and the LED/LDR method posted eariler, would be to modulate a JFET instead of the switch in a polarity reverser type circuit.

frequencycentral

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Re: "Sonic Death Ray" Phaser - a phase insurrection!
« Reply #65 on: August 05, 2010, 10:20:53 AM »
Parity modulation LFO redesigned, perf'ed and tested, home-made vactrols rolled. And the main PCB arrived today from my PCB man.....



......and some perf-porn for Slade:

« Last Edit: August 05, 2010, 10:56:03 AM by frequencycentral »
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frequencycentral

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Re: "Sonic Death Ray" Phaser - a phase insurrection!
« Reply #66 on: August 05, 2010, 07:48:33 PM »
Here's the new parity mod circuit and layout. A little more graduated than the previous version. Incidentally, this circuit can also be used to replace pretty much any pot configured as a voltage divider, though you might want to limit the dark resistance of the LDRs by using resistors in parallel. Imagine - LFO control of BM tonestack, or of mixing between two signals, or..........





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frequencycentral

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Re: "Sonic Death Ray" Phaser - a phase insurrection!
« Reply #67 on: August 12, 2010, 10:08:43 AM »
PCB layout verified! Just hooked it up! This thing sounds awesome - even quieter than on breadboard. I can't wait to get it boxed up now......

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Questo Ŕ il fiore del partigiano morto per la libertÓ!

frequencycentral

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Re: "Sonic Death Ray" Phaser - a phase insurrection!
« Reply #68 on: August 12, 2010, 12:23:39 PM »
The more observant amongst you will have noticed that the FETs are having sex. This is the secret of good phasing IMO.
http://www.frequencycentral.co.uk/

Questo Ŕ il fiore del partigiano morto per la libertÓ!

Slade

Re: "Sonic Death Ray" Phaser - a phase insurrection!
« Reply #69 on: August 12, 2010, 12:24:04 PM »
Fet-sex, ha?! You vouyerist cyborg!

Brymus

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Re: "Sonic Death Ray" Phaser - a phase insurrection!
« Reply #70 on: August 12, 2010, 02:13:51 PM »
Not just sex.
It looks like a full blown orgy  ;D
Are you sure El H didnt do that layout ?  :icon_twisted:  :icon_wink:
I'm no EE or even a tech,just a monkey with a soldering iron that can read,and follow instructions. ;D
My now defunct band http://www.facebook.com/TheZedLeppelinExperience

frequencycentral

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Re: "Sonic Death Ray" Phaser - a phase insurrection!
« Reply #71 on: August 13, 2010, 09:29:14 AM »
This is how I am proposing to implement the (quite complex) regen options:



The two regen inputs are on the left, one stage apart. The DPDT selects either parity modulation (from the parity modulation board) or fixed odd/even parity (selected by the SPDT). Then the regen pot and limiting resistor. Finally the 6 regen taps (each two stages apart) selected by the 1P6T rotary switch.
« Last Edit: August 13, 2010, 09:37:05 AM by frequencycentral »
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Questo Ŕ il fiore del partigiano morto per la libertÓ!

Slade

Re: "Sonic Death Ray" Phaser - a phase insurrection!
« Reply #72 on: August 13, 2010, 01:29:35 PM »
Hey, why don't you make the switch to select manual parity or parity modulation into a 3pdt stomp?
Would be nice to have that option while you're playing ;)

frequencycentral

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Re: "Sonic Death Ray" Phaser - a phase insurrection!
« Reply #73 on: August 13, 2010, 01:32:21 PM »
Hey, why don't you make the switch to select manual parity or parity modulation into a 3pdt stomp?
Would be nice to have that option while you're playing ;)

Wow what a good idea, how could I not have thought of that?  ::)
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Slade

Re: "Sonic Death Ray" Phaser - a phase insurrection!
« Reply #74 on: August 14, 2010, 01:40:19 AM »
Because it's a young'n idea.

tuckster

Re: "Sonic Death Ray" Phaser - a phase insurrection!
« Reply #75 on: October 05, 2010, 01:04:42 AM »
Is it possible to get a ultra long sweep like one can get out of a Whetstone Phaser? http://www.youtube.com/watch?v=zLKvcuQSyHY

tuckster

Re: "Sonic Death Ray" Phaser - a phase insurrection!
« Reply #76 on: October 05, 2010, 05:10:47 AM »
Is it possible to get a ultra long sweep like one can get out of a Whetstone Phaser? http://www.youtube.com/watch?v=zLKvcuQSyHY

I think I'm going to tinker around with my causality4 instead of building a new phaser. But is it technically possible to get such a long sweep with both "Rick Phasers" (without substituting the whole PCB)?

frequencycentral

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Re: "Sonic Death Ray" Phaser - a phase insurrection!
« Reply #77 on: October 25, 2010, 10:00:44 AM »
Box drilled, graphic applied, panel populated. Now for the off-board wiring nightmare to come.....

http://www.frequencycentral.co.uk/

Questo Ŕ il fiore del partigiano morto per la libertÓ!

Slade

Re: "Sonic Death Ray" Phaser - a phase insurrection!
« Reply #78 on: October 25, 2010, 12:52:15 PM »
Awesome looking pedal :icon_cool:
Love those nippleds...

deadastronaut

Re: "Sonic Death Ray" Phaser - a phase insurrection!
« Reply #79 on: October 25, 2010, 01:22:22 PM »
Hmmmm,, nice phasers on stunning.. :)
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chasm reverb/tremshifter/faze filter/abductor II delay/timestream reverb/dreamtime delay/skinwalker hi gain dist/black triangle OD/ nano drums/space patrol fuzz//