you know they make dual 2 type Rs right? he can wire them into 4ohms //content.invisioncic.com/y282845/emoticons/wink.gif.608e3ea05f1a9f98611af0861652f8fb.gifHow much money do yo have to spend all together on the sub and amp?
Also, you know that wiring a dual 4 ohm subwoofer, such as the tyep R in parallel will give a 2 ohm load to the amp, right? That would give your tyep R 600W RMS to play with on the MRD-M605. A dual 4 ohm sub cannot be wired to 4 ohms, only 2 and 8.