If your in the closet (no pun), then you likely have no ventilation if the doors are closed. And, if movies only, that sounds like a perfect candidate for a DIGITAL AV RECEIVER! That equals low heat, and likely no fan or issues. Again, since it's movies only, any pickiness on ultimate sound quality preferences would be more of a moot point, as long as it's clear sounding and offers good enough dynamics and power for the speakers you're driving.
The Panasonic SA-XR55 and JVC RX-D20 are Class D digital Amplifier units, and will do what you need, likely.
If you go the tradiational Class A/B type power amp route, you can also go with very efficient horn loaded Klipsch loudspeakers, and that will draw much less current from your AV reveiver, making it run cooler than standard 86-88db loud speaker designs. It's a thought.
What gear are you using besides the receiver?
The Panasonic SA-XR55 and JVC RX-D20 are Class D digital Amplifier units, and will do what you need, likely.
If you go the tradiational Class A/B type power amp route, you can also go with very efficient horn loaded Klipsch loudspeakers, and that will draw much less current from your AV reveiver, making it run cooler than standard 86-88db loud speaker designs. It's a thought.
What gear are you using besides the receiver?