The Propust by Battle Instruments is a triple passive filter module in a compact 2HP.
The filter features fixed cutoff frequencies and both high- and low-pass stages. The high-pass filter has two stages while the low-pass filter has one, when a signal is processed through both stages it creates a band-pass signal.
The module does not require power for operation.
This is the ALUMINUM version of the Propust.
- Triple highpass 2-pole filters (cutoffs are cca 7kHz, 3.5kHz and 220Hz)
- Triple lowpass 1-pole filters (cutoffs are cca (1.5kHz, 4.1kHz and 880Hz)
- Passive design > signal drop + no power connection