The planned quadrature VCO will also work as an LFO (probably a switch to
select between VCO and LFO mode) and output perfect sine, cosine, inverted
sine and inverted cosine - or in other words four sine waves with 90 degree
phase shift between each other.

We also think about pure quadrature LFO based on this technique without the
(expensive) thru-zero function and frequency controls (multi-turn pot and/or
octave switches). This LFO design would be ready and we could manufacture
such an LFO very soon but we are not yet sure if we will manufacture two
modules (low-cost LFO and high-cost thru-zero VCO) or only one (high-cost
VCO with LFO switch). Low-cost means in this connection clearly less than
100 Euro, high-cost clearly more than 200 Euro.

Best wishes
Dieter Doepfer

> -----Ursprüngliche Nachricht-----
> Von: Doepfer_a100@yahoogroups.com
> [mailto: Doepfer_a100@yahoogroups.com ]Im Auftrag von David Marino
> Gesendet: Montag, 18. September 2006 19:22
> An: Doepfer_a100@yahoogroups.com
> Betreff: Re: 1 A-143.3
>
>
> what mod has the best sine waves
>
> Richard < richardscott@... > wrote: speaking of
> sine waves which aren't.... the price is right but I notice this
> low cost A-143.3 quad LFO lacks a sine wave. I wonder if users
> find the triangle wave is satisfactory substitute Is the peak of
> the triangle obviously audible if you use it to modulate a VCO,
> VCA or VCF
>
> in general any opnions of the success of this module
>
> Richard