DIY Subwoofer

*List of Materials - 4ohm Subwoofer: - TPA 3116 2.1 Bluetooth Amplifier: - Speaker Box Terminal: - AC 250V Socket: ; - Power Cable: ; - 12-24v Metal Power Switch: - USB 2.0 Male to 4P DIP Switch Module: - USB 2.0 Female to 4P DIP Switch Module: - Anti - Shock Rubber for Speaker: h