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Vintage threads from the first ten years

info on sustainiac thing

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4/23/1997 5:16 PM
eth	info on sustainiac thing Does anyone know or have any idea how the   fernandez sustainiac works or might work.   I have heard of infra- red in the e-bow (?)   but haven't thought of how that might work   either. Any guess's would be appreciated.   thanks- eth

 

7/22/1997 11:26 PM
Don	ETH,   I'm not a tech, but I do know a   little about the workings of the   original sustainiac; Basically, the   bridge pickup picks up the signal   from the vibrating string, sends   it through a circuit which   amplifies the signal, and the sends   it BACK to the string at the neck   PU. Hope that helps.   don

 

7/27/1997 10:31 PM

Austin C

ETH,     I think Don's pretty much nailed it.     The signal (picked up from the vibrating string passing through the P/U's magnetic lines of flux)   is sent to the guitar jack and also to the Sustainiac unit (looks like a P/U).     A sneaky process then occurs, the excact opposite of what happened on the way in......     Instead of the string providing energy by passing through lines of flux, the Sustainiac provides the energy with modulated lines of flux which in turn move the string at the modulation frequency.     The signal chain forms a feedback loop to track the note being played and the Sustainiac outputs the corresponding frequency to keep the string vibrating.     Well this is how i'd do it anyway, i've never actually played one or pulled one apart. Unless there is a small canister of magic fairy dust involved I can't see any other way this could be done.     Hope this has helped     see ya     Ozzie

 

7/28/1997 6:48 AM
R.G.	I got something like this running once using a coil of wore wound on a small magnet, an opamp and an LM386 to drive a second coil on a piece of iron. Ugly, but it worked a little.

 

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