Propust

A triple passive filter in 2 HP from Bastl's first Eurorack line: three fixed RC filters, each a 2-pole highpass then a 1-pole lowpass, no power needed.

Key features

• Filter A: highpass at about 7 kHz, lowpass at about 1.5 kHz
• Filter B: highpass at about 3.5 kHz, lowpass at about 4.1 kHz
• Filter C: highpass at about 220 Hz, lowpass at about 880 Hz
• Through both stages, a bandpass
• Passive: the signal drops, and it can be passed through the stages in any direction