Looking for exciter schematics

[The Dark force of dance]

Y-ellow Jules 'n' y'all.

At 10:28 AM 08/25/98 +0000, Jules Ryckebusch wrote:
>Based on the response to this thread, I will re-draw the schematic 
>in a postable format and do it that way. As a side note, it really 
>does sound like the Aphex device. I believe Aphex came up with 
>varitaions, including the cross modulation of the high frequencies 
>with a multiplier AND the distortion method I used (which is in one 
>of their patents, alebiet probably "bustable") Give me a couple days 
>ont this and I'll post it. I always wanted to use a tube section for 
>the distortion end of the circuit... Maybe now would be a good time. 
>One final note, the Aphex patent using distortion expired in 1997.

This all sounds more plausible. At the time I tried to reverse engineer the
box I had no clue as to how these things work. Which always makes things
harder to understand. The thing that stumped me was that the amplitude
control of the 13600, IE: Iabc, was derived directly through a resistor
from it's input. At which point I threw my hands up and said. "Nar this is
too weird." Upon reflection though it could have been simply trying to use
the OTA for distortion. I don't know if anyone has noticed but an LM13600
in just the _Wrong_ configuration makes one wicked distortion unit.

I don't know exactly but it could also stand to reason that it provides
some sort of cross modulation circuit. Unfortunately all these things crop
up at just the wrong time for me. Bogged down as I am at the moment in a
VGA system that won't. But I've downloaded some of the patent information
and will chew threw it at my earliest possible time. I also want to look
into how they do their bass enhancement as well.

Thanks y'all and I look forward to your re-drawn enhancer circuit Jules.

Be Absolutely Icebox.

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