Before starting this kit, prepare the following tools: Soldering iron (15-20W will do), multi-meter, protective eyewear, flush cutters, n2. hex screwdriver or allen key, phillips screwdriver and some coffee. Also briefly go through this guide and make sure that you understand all the steps, if you are having any troubles don’t hesitate to seek help at the forum.
We suggest that you work in a clean and a well lit environment to avoid accidents or losing any of the small components.
Tripple passive filter.
Propust is a compact tripple passive filter with with fixed cutoff frequencies for highpass and lowpass stages. It is a simple RC filter with 2 stages for HP and one stage for LP. There is a drop in signal loudness. No power connection is required. Simple fixed filters can help you to clean up your final mix and make room for each sound, or they can be used for filtering noises and other signals when generating drum sounds, for instance. When the signal goes thru both HP and LP stages, it creates BP.
tripple highpass 2-pole filters (cutoffs are cca 7kHz, 3.5kHz and 220Hz)
tripple lowpass 1-pole filters (cutoffs are cca (1.5kHz, 4.1kHz and 880Hz)
passive design > signal drop + no power connection
passive design – no power needed