Axiom Home Page Forums General Discussion Advice from Axiom Owners Receiver positioning

I am just putting together my shelving unit I am going to have my components in. I have two options for receiver placement, I am worried a little bit about heat.

Option 1: 3" air space above the receiver, about 5" to each side, about 6" to the back.

Option 2: 6" air space above (really I could go up to 12" if I had to), 3" to each side and 3" to the back.

I MUCH prefer to place it in option 1 if I can... Just worried if 3" will be enough seeing as how most of the vents are up there. I could wire in a fan easily enough but I don't want any noise from it.

BTW it is a Denon 2310.

Thanks!