the two 12s wo Car audio...? I have two kicker 15s with 1800 mono d amp an two 300 rms 600 max 12s do you think the two 12s would sound better for highs an mids or my 800watt eclispe 10 in bandpass box with dynamatt that slamms just about like two 12s...there going to be installed into a fullsized van