New house built 5 years ago. I have a basement theater room with 12 foot drywall ceilings that have HVAC conduit and recessed lighting (in other words there is some space behind/above the drywall). I have a projector I need to ceiling mount and a surround sound system to run front and rear speakers.
I plan to have the projector in the ceiling and the other electronics (receiver, etc) off to the side of the room on the ground (receiver cabinet). So I need to run power and HDMI from the receiver cabinet to the projector as well as speaker wire from the receiver cabinet to the four corners of the room. I have a 25 foot HDMI, speaker wire and an indoor/outdoor extension cord.
My primary concern is how to run the HDMI and power to the projector. Should I run some sort of conduit or channel in the ceiling (exposed or hidden) -- like a server room runs ethernet cable? If behind the wall, is it safe/code to run an extension cord behind the drywall in the ceiling to power the projector?
I may run the speaker along the baseboard simply to avoid extensive wiring/holes in my ceiling so I'm less concerned about how to do that.