Four pole VCF and quadrature oscillator
The Feague is a 4 pole VCF and quadrature oscillator with 0, 90, 180 & 270 degree outputs. It is based on the design in Electronotes 41.
It features a Lo/Hi switch to run it at audio rates or LFO rates, plus a nonlinear Q pot which makes for interesting behaviour when using as a VCF.
When using as a QUO, the nonlinQ pot is used to increase the amplitude of the output signal, which is known to shrink somewhat at low frequencies in these kind of oscillators.
Available as an assembled Module and as a DIY project.
This Module is currently available.$210 Price in € submitted Jan 29th 2017, 02:13 by williamcarthief | last Change Jan 13th, 19:22 by ApolaKipso