Akai EWV2000 - Rear Panel Overview; Rear Panel Connections and Switches

B. ADJUSTMENT OF STRING & BASSOON FILTER. "
1) Connect the EWIIOOO to the EWV2000. Connect an oscilloscope to the LINE OUT terminal, and set the output level control
to maximum.
2) Follow steps 2 to 5 of the ADJUSTMENT OF VIBRATE CONTROL AMPLIFIER section.
3) Without touching the EWIIOOO touch sensor, confirm that the sawtooth waveform shown in fig. 5-3 is output.
Fig. 5-3
4) Display [FILTER OFF] on the LCD using the EFFECT key, then press the "VALUE UP" key and select [FILTER 1].
5) Adjust the STRING & BASSOON FILTER PCB VR1 so as to obtain the waveform in fig. 5-4.
Fig. 5-4
6) Press the "VALUE UP" key again, and select [FILTER 2.]
7) Turn the STRING & BASSOON FILTER PCB VR2 AND VR4 fully clockwise, and VR3 fully counterclockwise.
8) While looking at the oscilloscope, adjust VR2 so as to obtain maximum oscillation frequency.
* Take care not to turn VR2 excessively, otherwise oscillation may stop. (fig. 5-5, 5-6).
5*5 Fig. 5-6
9) Turn VR3 to stop oscillation, then adjust it so as to obtain the waveform in fig. 5-7.
Fig. 5-7
10) Output C, from the EW1000, then adjust VR4 so as to obtain the waveform in fig. 5-8.
v*
Fig. 5-8
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