Quantity | Component name | |
1 | × | XH-M548-B TPA3116-based bluetooth amplifier module (£10) |
1 | × | JBL CS-742 coaxial 4" car speakers (£20 for two) |
1 | × | (optional) solar MPPT 3S Li-ion charger module CN3277-based board from eBay |
1 | × | Visaton KT 100V 4" subwoofer (£20) |
1 | × | Passive radiator 85x59mm (£3 for two) |
1 | × | 11.1V (6 cell) Li-Ion laptop battery or 22V vacuum cleaner battery e.g. aftermarket batteries from Lenoge (£9) |
1 | × | 3S protection circuit module e.g. HX-3S-01 from eBay (£3) |
1 | × | Carry handle e.g. £2.50 from eBay |
12 | × | Disc magnets 5mm dia x 1mm thick neodymium £3 for 25 |
1 | × | TL431A Precision programmable voltage reference (£1) |
1 | × | Various offcuts of 9mm and 12mm plywood, screws, glue, etc. |