Q9 is always either on because the base is positively biased by R70, or off because of the comparator IC8b. I *think* I got it (someone please correct me otherwise): Removing it from the circuit would make the current fluctuate, affecting the saw wave. Would like to know the source of those mods. Then, pins 5 and 6 will have to be put to work. Turns out there's a comparator after it to convert the modulation triangle into a pulse wave followed by a saw converter of which C46 is at its hart, which is then followed by another comparator that converts the saw wave into pulse signals for the clock divider (thanks Korg). So try replacing C44 with the 10p capacitor and report back, please. And a resistor, later turned variable, to change its time constant at the player's will.
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There has to be a timing capacitor of a small value for the clock alone, leading to pin 7. But pins 5 and 6 were left floating because Korg decided to run the 3102 in separate excitation mode. Pins 5, 6 and 7 are meant to control the clock frequency.
KORG POLY 800 BATTERY MOD MANUAL
So I just read the service manual more carefully as well as the MN3102 datasheet. If the delay is too short, it makes up for the ringing, metallic tone so characteristic of flanger effects. Because the effected signal gets processed over and over.
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When the delay time is long enough, feedback determines the number of audible repetitions.
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Although it can be either positive or negative. Feedback in a delay line works much like resonance in a filter.