Check out the pics in my sig. I'm sure my solution isn't for everyone. Especially those with WAF issues. My HK AVR630 is 42 lbs, so not as big as the 7300. It wouldn't fit into the entertainment wall unit without cutting holes in the back. My solution was to just put it on top and I haven't changed it since. I never have to worry about it over heating since it is out in the open.

Just throwing in an extra idea.

Shag