I found this set of speakers at a garage sale for $20 and though it would be fun to see if I could make it sound better than a $20 set of speakers.

The Yamaha AP4400M seems to have been a set of main speakers that originally came in a surround package with the 4400C being the center and the 4400S being the surrounds. I believe these are from the early 2000s.
Power Handling - 100w max at 6Ω
Frequency range - 55Hz to 28kHz

I used 18 ga air core inductors and polypropylene capacitors in the upgraded crossover, 14 ga OFC internal wire, soldered connections and banana connectors.

I'd like to give thanks to @AudioJudgement @Toid @GRResearch for the content they produce that allow for this hobby and community to learn and grow. Thanks guys.

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