Matt The Modulator
sx_150_schematic
Gakken SX-150 analog synth. The filter circuit is pretty good for noise machines and circuit bent tings. To use 9V you need to apply less inicial voltage to the base of the two transistors and other resistors could do with being changed for better performance.
It is possible to overirde the resonance feedback resistor (1k) to make the filter self oscillate when the resonance is turned on.
sx_150_schematic
Gakken SX-150 analog synth. The filter circuit is pretty good for noise machines and circuit bent tings. To use 9V you need to apply less inicial voltage to the base of the two transistors and other resistors could do with being changed for better performance.
It is possible to overirde the resonance feedback resistor (1k) to make the filter self oscillate when the resonance is turned on.