I was just a little curious, which would be more suitable for an SPL setup. One RE Audio 15" XXX 2 ohm with 4 cubic ft. ported enclosure tuned to 28hz or two Soundsplinter 12" RL-Ps 4 ohm with 3 cubic ft. ported enclosure tuned to 30hz. Both setups would be amped up with an Orion 2500D wired at...