Crossover Design Chart and Inductance vs. Frequency Calculator(Low-pass)

PLLXO Crossovers

Jeff Vautin

Speaker Crossover Calculator + Crossover Building Tips

Filter Design Guide

Does a capacitor by itself act as a high pass or low pass filter

Vintage JBL for subwofer

A low-pass-filter-to-high-pass-filter transformation.

Crossover Design and Theory – Aperion Audio

Calculating RC Low-Pass Filter Cut-Off Frequency and Transfer

Where is a high pass filter the most effective in the signal chain

Lpad v single resistor, Page 4

Jamo dynamic D5e/D2e repairs, Page 2