dual 2 ohm voice coil

Hello guys, I want to buy a TRF M600.4AB amplifier (4 channels, 600 watt RMS max, max RMS power 4ohm 80W*4, max RMS power bridged 4ohm 300W*2) and a TRF VLSW123D2 Subwoofer (12'', 350 watt RMS, dual 2ohm voice coil) for my car. And i want to connect the "2 voice coils" of the sub in series (so...