Orion CBW124D 12" 400W RMS Subwoofer DVC 4-Ohm

Orion CBW804S - 8" Subwoofer 200 Watts RMS SINGLE 4-Ohm

DS18 PRO-X 6.5" 4-Ohm Mid-Range Car Speaker - 1 Speaker

DS18 PRO-X6M 450W 6.5" Midrange Full Range Super Speaker Loudspeaker 8 Ohm

Rockford Fosgate P1S4-10 10” Subwoofer- SVC (4-Ohm), 250 Watts Rms, 500 W Peak

Audiopipe Pro Car Audio 15" 500 Watt RMS 2" SVC 4-Ohm Subwoofer

Orion CBW104D 10" 300W RMS Subwoofer DVC 4-Ohm

Audiopipe Pro Car Audio 12" 300 Watt RMS 2" SVC 4-Ohm Subwoofer