[sdiy] Ice Box questions

[mark verbos]

That's not cool.

;)



mark

med wrote:

>Heya! I have an Ice Box (DOD FX64) chorus pedal. From the looks of it,
>it modulates the clock of a short delay line (that's what the MN chips
>are, right)up and down in order to raise and lower the pitch in a
>"chorus"-ey manner. However, it doesn't actually *do* this much of the
>time, instead turning on and letting signal pass but not changing
>pitch. Some other times when it works, one can hear a noticable "thump
>thump thump" from the box, usually when the signal is at its lowest
>pitch.
>So the question is, anyone familiar with this pedal and how it works?
>Where's the "lfo" on it? If any the top-of-box pots (i think the one
>for "depth") show the waveform, then in the course of "scoping" out
>the pedal it's exactly half a sine wave. It's a pretty nice effect for
>"slight-vibrato" to "almost-ringmodulated" sounds when it works, but
>it seems to never want to work.
>
>-MED
>
>-P.S. Back when it still worked, I connected one of the outputs back
>to the input. It sounded very cool and siren-like. (even cooler was
>throwing a wah in the "feedback loop" -- if I had a delay i would've
>put that there too) But could this've been what killed it? I shudder
>to think of a stomp box without some kind of circuitry-protecting
>diodes on the input...
>
>