Toying around with isolation systems; roller bearings and furniture cups are in use presently with marble bases and inner-tubes under the components. Suspended hardwood floor braced with jack-posts under speaker location.
Its presently a gas fireplace that doesn't get much use, and it doesn't seem to heat up at all below the firebox when it's on. I'm hoping to convert it back to wood burning this year, and I'll have to do something about the left cable. Thanks for the suggestion!