So I have 4 of these Magnum 12 woofers seen here: https://www.diysoundgroup.com/magnum-12.html Tuned @ 45hz do these Magnum 12 woofers go good with a TC Sounds LMS-R Ultra 5400 subwoofer tuned @ 20hz for home theater? Should I only run the 18" @ 45hz and below? Or leave it at 80hz? And should the 12" be run up to 120hz or somewhere near 150hz?