Slate is correct. You need to wire each individual sub in series and then connect it to its own channel. Connect one of the '+' to the opposite '-' then the remaining '+' and '-' to the amp. Repeat for the second speaker. Also, your amp doesn't require a 2 ohm load, it is rated for as low as a 2 ohm load. You can always go higher, but not necessary in your case. With two 2-ohm stable channels and your subs connected as 2 ohm loads, you will be maximizing your power transfer. The picture you posted is not the correct configuration. Good luck!