There are Maggie owners already using GR/Rythmik OB subs. You don't HAVE to put them under the panels, they can sit next to them just as well. If you put an H or W frame under your 1.6's, the panels might be a little too high in relation to the height of your ears. A vertical H-Frame with 12" woofers will put the bottom of a 1.6 panel at least 27.25" off the ground. Then there is the matter of keeping the energy from the H-Frame out of the panels, made all the more difficult if they are physically attached to each other.