MOTM

>>>>
Say I have a 310 uVCO and a 300, can I run the output of the 310 into 
the "hard sync" jack on the 300? If so, the CV going into the 310 
controls the pitch, whereas the CV going into the 300 only controls 
the timbre of the sound? (they could both track the main CV i'm 
playing with the coarse adjustment on the 300 set to give me a 
specific sound)
<<<<

You have the right idea. To do the classic 'hard sync' sounds, be 
sure and run the 300 at higher frequencies than the 310 (using your 
patch example). Use a pulse wave output from the 310 to connect to 
the 300's sync input.

>>>>
The resonant sound, naer sine wave, of the filter *tracking* the 
harmonic content of the source wave. So, say if this patch were set 
with no oscillator, and the filter self oscillating, you'd here a 
continuous pitch shift. That's not what I want. With the oscillator 
going, I'm looking for that resonant peak to follow the content of 
the wave... so what you hear as the filter's cutoff increases, is the 
resonant sound "jumping" from one frequency to another. 
<<<<

I just patched up both a MOTM-420 and a MOTM-440 to check this, and 
was able to get the 'jumping harmonic series' effect with either one. 
The 440 sounds more pure, the 420 more buzzy. The secret is adjusting 
the resonance to just BELOW hard oscillation. Also remember that 
there is a certain range (starting from the fundamental VCO frequency 
and moving upward through the first 10 harmonics or so) that the 
harmonics of the VCO are far enough apart so that this effect is 
pronounced. As you sweep further and further up into the high 
harmonics, they become so close together in frequency that the effect 
disappears, and it sounds continuous instead of stepped.

Moe