Another Syntecno post... DIY?

[cyborg0 at GlobalEyes.net]

ok, heres the deal.. 
I have found 2 things that I THINK may attribute to the TeeBee's
excellent but not perfect simulation of a tb303

Some of the things that sound different have to to with mainly the fact
that, with all knobs left except cutoff (full right) it doesnt sound
right..ie, it doesnt sound like any of the tb303s ive compared it to. It
doesnt have the same *raspiness* and *growl*(tm) :))
I think this may be the lack of the ol ba662 in the VCA..but it could
be...

1) that "aggressiveness" pot was, I believe, actually the other side of
the resonance pot on the 303..Ive yet to confirm this totally.
Perhaps hooking this up will the sound better at hi cutoff and give it
more grit.

2) the filter outputs a y-axis symmetrical voltage swings in the
waveform.
|\    |\     
| \   | \   
   | /   | /             
   |/    |/                 

 unlike the original tb303, where, at TP-6, the waveform is only
asymmetrical, ie the saw wave still looks exactly like the original saw
wave being fed into the filter.
|\ |\     
| \| \   



 Im sure the same harmonics are present, but I wonder what effect this
has on the input to the VCA?
This might also be it..

One other thing.. sometimes, esp when using SEQ303 (which is a GREAT
program BTW) I notice that I can program a sequence exactly the way it
is in a 303, and, for some reason, the sequence sounds exact, BUT, the
notes seem kinda *stiff*. Anyone know a reason for this?
i looked at wave files for each one playing the same sequence, and I
could find NO timing difference in either the start of the frequency
change (for slide) or the note start..
anyone care to comment?
Anyone notice any of these things?
rob