>The other waveforms have to be derived by waveform
> converters from the core waveform which always leads to imperfections
> (except rectangle which is easy to generate by a comparator). The A-143-4
> uses a triangle core. A voltage controlled oscillator with a perfect sine is
> already available: A-143-9

dieter, is it possible to convert the waveforms after they have left the module i would have thought that would make an interesting and valuable module.

>
> If we expand the A-143-4 by everything that is available in other
> oscillators (additional waveforms, range or octave switches, hard sync, soft
> sync, linear FM, additional CV inputs, LED display ...) the front panel
> width and the price will increase and the advantage of a compact module with
> only the most important functions is lost. The problem is to find the right
> compromise between functions and price.

i'm also in favour of less-is-more (and uses less space). but i guess the range switch would be essential for those using the module as tuned vco's, otherwise tuning it would be somewhat clumsy, as it is when using a self-oscillating filter. on the other hand, one huge sweep from top to bottom is a fine thing :)

octave switches can be realized externally,

led's: hmm, the pros and cons are obvious enough. but i think i'd come down on the side of space and cost saving, although i can imagine forgetting which lfo is going where :) but my main interest is having four vco's.

how bad does the tuning get without temperature compensation

thanks,

stu