I second Tireguy's suggestion especially if you like Magnepans. A friend of mine hung his 1.6QR's by cables, angled them downward and toed into the sweet spot and secured them to the back wall with a brace at the bottom. He likes to sail so he got all his hardware stuff from a boat shop. It kept them safe from all sorts of kritters and sounded pretty good considering they were up off the floor by over three feet with the top angled downward approimately 30 degrees.
Good luck,
Lou
Good luck,
Lou