Made these for a Mate's bedroom system, mids & tweeters from a Samsung 'HT' system, 4" woofers from discarded Sony speakers. Just as well they're plastic cones, the boxes had been saturated in the rain. 10L boxes made from an old 20L box I had in the shed, simplest xover ever: series, 3 components, 1mH across the mid, 38uF across the woofer, the tweeter with 12uf in series hung across the mid. Box tuned to ~ 50 Hz. Sound well balanced, remarkable bass, tweeters may be slightly hot, but I'll let my friend decide before I put any resistor in. Not particularly efficient, but pretty good for a couple of days effort and zero cost
