Since no one else has really answered your question, you can wire the Dual 4 ohm if you parallel the voice coils together to read 2 ohms. The dual 2 can only be wired at 1 ohm or 4 ohms (parallel, series). You can wire them both together to see 3 ohms at your amp but if it were me i would just use the dual 4 wired at 2 ohms and either get a matching woofer or just run the one.