Quantity   Component name
1 × Speaker enclosure Cut from particle board with a router and assembled with super glue.
1 × Subwoofer driver Testing several drivers from 3" to 5" diameter, from parts-express.com and custom samples from driver manufacturers.
2 × 2 inch full range driver https://wSurveying a few, include ww.parts-express.com/tang-band-w2-748sg-2-full-range-driver--264-861
1 × TDA7498 Class D 2X100W Amplifier Board https://www.amazon.com/gp/product/B016I799XM
3 × 2200mAh 3 Cell (11.1V) battery pack https://www.amazon.com/gp/product/B00WJN4LG0
1 × Custom CSR8670 PCBA (Bluetooth module) From a previous project
1 × Qualcomm/CSR ADK development license https://www.digikey.com/products/en?keywords=DL-BDEV-10002-1A-ND
1 × 1/8 inch aux to RCA adapter
2 × 6 x 6 x 1/16 inch rubber sheet For passive radiators
1 × 4 x 4 x 1 inch aluminum cup Testing with these: http://www.daisojapan.com/p-30433-stainless-steel-ledle-stand-10pks.aspx
1 × Clay Used to precisely change passive radiator mass