Hammond Skx PRO, Reference Manual, Page: 501 / 754

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Multi Effect 1
Ring Mod. (Ring Modulation)
“Ring modulation” is a signal-processing effect whereby two different frequencies are mixed together in
such a way as to eliminate, as much as possible, the individual frequencies themselves, leaving only the
sum and the difference of the two frequencies. In analog circuits, this is accomplished by arranging diodes
in a circle or ring, giving rise to the term, “ring modulator.” The result is a sound rich in overtones and
typically having somewhat of a bell-like or metallic quality. Because of this, the sound is sometimes called
a “Klang tone.”
From the screen shown on the previous page, use the DIRECTION buttons to move the cursor to the
box to the right of “TYPE and turn the VALUE knob so that the highlighted box displays “Ring Mod.”
Make sure the box to the right of “SWITCH” displays “On,” otherwise you will not hear the selected
MULTI EFFECT or the changes you make to it.
You can now select and hear the changes to the characteristics for the Ring Modulator MULTI EFFECT as
you make them.
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SKX PRO Reference Guide