Subwoofer Box Holder Remix

Imported and resized for speaker holes for 48mm (speaker OD is 50mm so left a lip and some slop/tolerance) converted the resultant .stl to .stp with freecad, imported to 123D and smoothed the internals and double double checked the speaker hole size)

Going to try and get [these speakers](https://www.aliexpress.com/item/2pcs-2-inch-4-Ohm-3-watt-speakers-small-louderspeaker-diameter-50mm-for-Mini-Amplifier-special/32717638213.html?spm=2114.search0104.3.90.3836e26fMjsYKf&ws_ab_test=searchweb0_0,searchweb201602_8_10065_10130_10068_10890_10547_319_10546_317_10548_10545_10696_453_10084_454_10083_10618_10307_537_536_10902_10059_10884_10887_321_322_10103,searchweb201603_51,ppcSwitch_0&algo_expid=debbb8e0-823f-4aa4-b611-5fca633e5d8f-13&algo_pvid=debbb8e0-823f-4aa4-b611-5fca633e5d8f)
or [these](https://www.aliexpress.com/item/IG-Audio-Equipment-4-Ohm-3W-50mm-Mounting-Dia-Horn-Midrange-Speaker/32975412173.html?spm=2114.search0104.3.30.3836e26fMjsYKf&ws_ab_test=searchweb0_0,searchweb201602_8_1