DS18's SB12 is designed to bring earth-shattering bass to any tight space. DS18 PRO-FU8.8 8 Car Audio Mid Range Loudspeaker, 700 Watts Max, 350 RMS 8 Ohms. DS18 PRO-FU10.8 10 Car Audio Mid Range Loudspeaker, 800 Watts, 400 RMS, 8 Ohms.