Lol, this is similar to my living room. In the fall we don't even need to turn the heat on until it gets below 40 degree's outside. The heat generated by all the HT equipment while listening to music, as well as our track lighting, does the trick just fine. ;\)
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My Stuff :

M80's
QS8's
VP150
EP800
Denon 4802
Emotiva XPA-3
Samsung BD-P3600
Sharp 65 Inch Aquos LCD