AudioPipe TXX-BDC4-12D2 12 Inch 2,200 Watt Dual 2 Ohm Subwoofer Car Audio System | Walmart Canada
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
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AXTON ATW16 - Subwoofer 16 cm 2x2 Ohm 75 W RMS EUR 62,10 - PicClick IT
Rockford Fosgate P2D2-10
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How to Wire a Dual 2 ohm Subwoofer to a 4 ohm Final Impedance | Car Audio 101 - YouTube