A:AnswerThere is a single shelf in the middle behind the doors that is adjustable, but it can only be adjusted up or down one inch. To accommodate your receiver you would have to remove (or omit) this shelf. Without the shelf, there is about 11.8 inches of clearance behind the doors.
A:AnswerThe back panel is already pre-assembled on the product, it does not come as a separate part. Unfortunately, we do not sell replacement parts for this unit.
A:AnswerIt is actually for a TV less than 65 inches wide. It's a very sturdy stand, and would definitely support the weight but I think a larger TV would be too wide to be safe on the 54" table top.
A:AnswerYou would have to place the speaker on the shelf before installing the top glass and probably try to hook up most of the wires as it’ll be difficult to work in the limited space when the glass top is permanently in place. The shelf height is 7” but the front of the cabinet has a bar that is 1.5” (l) x .75” (d) which runs the length of the cabinet (54”). So conceivably the 6.5” speaker can fit. Remember if you need to repair or replace, removal of the glass top would be necessary.
