To prewire a room for a home theater system like the Klipsch Reference Cinema System 5.1.4, you will need to run cables for the following components:
- Front left and right speakers
- Center channel speaker
- Surround left and right speakers
- Surround back left and right speakers (if using a 5.1.4 configuration)
- HDTV or projector
In terms of wire type, it is generally recommended to use high-quality speaker wire for connecting the speakers to the receiver. The wire should be rated for in-wall installation and should be labeled as CL2 or CL3, which indicates that it is safe for use inside walls.
For the video connection, you will need to run an HDMI cable from the source (such as a Blu-ray player or streaming device) to the TV or projector. You may also want to consider running a separate audio cable, such as a digital optical cable, to connect the audio from the source to the receiver.
It is generally a good idea to use in-wall rated cables for all of the connections to ensure that the cables are safe and compliant with local building codes. You should also plan the cable routing carefully to ensure that the cables are hidden and out of sight as much as possible.