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DIY Stompboxes => Building your own stompbox => Topic started by: JimRayden on April 16, 2006, 06:09:10 PM

Title: Super speed tremolo?
Post by: JimRayden on April 16, 2006, 06:09:10 PM
I remember listening to a soundclip of a really flexible tremolo. One could turn up it's speed to the point it sounded like a ring modulator.

So, I need a schem of a tremolo that goes to few hundred herz. It would be fun to reach kHz too. :D Perhaps mod the EA?

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Jimbo
Title: Re: Super speed tremolo?
Post by: no one ever on April 16, 2006, 06:11:53 PM
Pulsar?



Title: Re: Super speed tremolo?
Post by: Ge_Whiz on April 16, 2006, 06:26:30 PM
Any tremolo would do it. Reduce the value of the timing capacitors in the LFO until it reaches the range you want.
Title: Re: Super speed tremolo?
Post by: JimRayden on April 16, 2006, 06:30:16 PM
Quote from: Ge_Whiz on April 16, 2006, 06:26:30 PM
Any tremolo would do it. Reduce the value of the timing capacitors in the LFO until it reaches the range you want.


Thanks. Well, Lazy as I am, I'm going for the lowest part count. Is there a simpler tremolo than the EA?

---------
Jimbo
Title: Re: Super speed tremolo?
Post by: puretube on April 16, 2006, 06:32:00 PM
Quote from: Ge_Whiz on April 16, 2006, 06:26:30 PM
Any tremolo would do it. Reduce the value of the timing capacitors in the LFO until it reaches the range you want.


any non-LDR - tremolo...
Title: Re: Super speed tremolo?
Post by: Processaurus on April 16, 2006, 09:59:10 PM
Maybe the EA, but ditch the LFO section, with its limited range.  You could easily graft the 555 LFO that the Tremulous lune uses on there, before the depth pot.  A reverse log pot or a faked one with tapering resistors would be neccessary for the rate control, otherwise the LFO would be super speed for 3/4 of the pots rotation.

if you just wanted super speed, though, and wanted to keep it simple, you could just make an EA trem with the 3 caps in the LFO section much smaller.  The LFO section is so small and simple, its easy to make a couple of them on the same board (say regular speed, and ring mod speed), with a speed pot for each, and switch between the them.  Easy. 

Transmogrifox just posted this clever mod for getting better depth from EA too:   
http://www.diystompboxes.com/smfforum/index.php?topic=43902.0 (http://www.diystompboxes.com/smfforum/index.php?topic=43902.0)
Title: Re: Super speed tremolo?
Post by: R.G. on April 16, 2006, 10:37:43 PM
JEN Modulator. CJlectronics.