Power 16" T2 Single 1-Ohm Subwoofer | Rockford Fosgate
Compre Edge Rs10 Echo Série único 10 "500 Watts 1ohm Ventilado Subwoofer Pré-carregado Com Design Portado e Carro áudio de China por grosso por 0.01 USD | Global Sources
BOA121-N 12 inch Car Subwoofer | RMS Dual 1 Ohm Mega Neodymium Subwoofer
How to Wire Two Single 2 ohm Subwoofers to a 1 ohm Final Impedance | Parallel Wiring | Car Audio 101 - YouTube