The Low Pass Filter removes high frequencies, or for use as a single band crossover for creating feeds for sub-bass drivers.
Low Frequency Optimization: Defaults to yes. Optimized IIR filter for improved low frequency performance. This is optional to maintain backwards compatibility with existing designs.
Frequency control: Adjusts the low-pass frequency.
Filter Type: Selects the filter shape (or crossover alignment) and cut-off slope.
Bypass: Removes the filter from the signal path.