My first finished diy crossover! (i'm only 14) : r/diyaudio
Adjustable HIFI Horn Treble Bass 2 Way Audio Frequency Divider Home Car DIY Speaker Crossover Filters Kits|Integrated Circuits| - AliExpress
Making The Crossovers For My Speakers PLUS Sound Test - YouTube
Humble Homemade Hifi - Crossover Design
How To Make A Speaker Crossover - IBUILDIT.CA
Resources - Building A Crossover | Diy amplifier, Diy speakers, Audio crossover
Speaker Frequency Divider Board Treble Alto Bass 3 Way High Power Hi-Fi Audio Crossover Filter Frequency Distributor DIY Module : Amazon.ca: Electronics