MOTM

--- In motm@egroups.com, "Dave Bradley" <daveb@e...> wrote:
> That's it for now, I'm eager to put them through their paces 
tonight.
> However, the first thing I must before I can test is to replace the 
jacks
> with 1/4" Switchcrafts.

Well, I lied. I was too impatient to switch out the jacks, not to 
mention it's prudent to verify your module works before you carve it 
up...

I settled for soldering a MOTM power cable on, and used alligator 
clips on the input and output jacks. I didn't play with CV bank or 
wave select at all yet, just swept through them with the knobs.

I like the Mini-Wave a lot. Once I got it calibrated (more later), it 
had a nice clean sound. It had a lot of interesting sounding static 
waves, some good sounding wave bank sweeps, the vocal formants were 
pretty nice, and the quantizer bank is awesome. Sweep it up and down 
with a triangle wave and vary the wave number, and you've got a fun 
arpeggiator. I'll probably buy a second one as well.

OK, so to get the best performance out of this system you've got to 
calibrate it. The input waveform needs to be precisely -5V to +5V to 
play all the samples in any given wavetable. I found my 300s to have 
slightly less amplitude than that. I trimmed the Wiard's input gain 
and offset and watched the output on a scope to get a good clean sine 
wave output (using a sine wave sample, natch). You could do the same 
2 trims by ear, since you can easily hear when the sine distortion is 
at a minimum. I also found that using my 320 was not optimal after I 
had the Mini-Wave calibrated to the 300s, which were pretty 
consistant with each other. So I may look into some precision 
resistors around the 300 VCO and 320 LFO waveshaper circuits, to get 
exactly 10V peak to peak outputs for all modules which might drive a 
Mini-Wave.

All for now,

Moe