Audiobahn - Subwoofer 30,5 cm (12"), 1000W, 2x2 Ohm, 180 Oz magnete allo stronzio, Fs 31Hz, Qts 0,34, VAS 33L, SPL 92,9dB, bobina da 76 mm : Amazon.it: Elettronica
How to Wire a Dual 2 ohm Subwoofer to a 1 ohm Final Impedance | Parallel Wiring | Car Audio 101 - YouTube