homemade subwoofer

Please check out my new video at the basket is made from hardboard (wood-based panel) and universal glue. it’s very lightweight, but a bit flexy. there are two stacked magnets from two old loudspeakers. the voice coil: (25 awg), 58m length, 6cm diameter, 4 layers, apr. 75 turns per layer, 6 ohm DC resistance, don’t know the impedance. wound on varnished paper cylinder. the cone is 8“ and weighs about 120g. the speaker sensitivity is poor because on the sa