Alpine R-Series RS-W12D2 12" Shallow Mount Subwoofer with Dual 2-Ohm Voice Coils
RS Line – Mosconi America / Gladen Audio America
Amazon.com: Soundavo PSB-1000DSP Class D 1000W RMS Subwoofer Amplifier for Home Theater with RS-232 / IR Remote Control, Dual Sub Speaker Outputs : Electronics