I have a JL Audio 13w7 driver which has two voils coils, each one at 1.5 ohms. They can be wired in series or parallel. I plan to run the xti4000 in parallel so each channel will see 1.5ohms. The total power handing of the speaker is about 1600 watts total. I only want these to be crossed at 40hz and on down. Is this a good amp for this situation? Would the 4002 version be any better, sonically?