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I've followed the directions given by the manual, as quoted below:
When I turn up the Signal Level enough to hear any audio coming out of my speakers it seems to just reach the point where it will begin to clip. I realize the audio input must be ridiculously sensitive, but this is a little annoying. I'm thinking maybe I gotta spend more time tweaking things (perhaps turning up or turning down some other knobs would help?) or maybe I should run my drum loop throuhg a compressor before running it through the MS-20.Korg MS-20 Manual wrote:8) Using the External Signal Processor (E.S.P.)
To use the ESP module, follow the steps listed below:
(1) Connect the external signal source (e.g., electric guitar, microphone, electric piano, etc.) to the ESP's SIGNAL IN jack.
(2) Adjust the Signal Level so that the Peak Level indicator only flickers slightly when the external signal input reaches maximum volume.
(3) Turn the Threshold Level control clockwise while watching the TRIG OUT light, until it lights when playing at medium to high voltage levels.
(4) Connect F (inf.) V CV OUT to VCO 1+2 CV IN (or VCO 2 CV IN); connect TRIG OUT (ESP) to the TRIGGER IN jack, and the ENV OUT jack to the VCA's INITIAL GAIN jack.
(5) To adjust the Bandpass Filtering section for proper operation first set the LOW CUT FREQ to "10" and HIGH CUT FREQ to "0". Play the highest note the ESP is to pick up, and slowly turn the HIGH CUT control clockwise until the desired pitch is picked up.
Next play the lowest note and turn the LOW CUT control counter clockwise until it is registered on the MS-20. This completes the Bandpass Filter adjustments.
(6) Adjust the CV ADJUST control until the MS-20's pitch matches that of the input instrument.
(7) If desired, the original sound of the instrument may be mixed with the synthesized sounds by the ESP's PRE-AMP OUT to the EXTERNAL SIGNAL IN jack.
Once the above steps have been completed, the MS-20 may be programmed for different sounds in the same manner as when the keyboard is utilized.
Can anyone give me any advice specifically concerning the use of the external audio input on the MS-20? Any suggestions, methods, hints or tips would be greatly appreciated!
