I run a Bag End 18" subwoofer on top of the 2-10" amplified Bass rig but this is more of a stage issue that lead to multi-sub home experimentation.
Crawl testing for sub location has never been near a main speaker location in my rooms but one is elevated 25". Give it a try.
Crawl testing for sub location has never been near a main speaker location in my rooms but one is elevated 25". Give it a try.