It didn't take long after we first opened the theater before one of our children asked if she could connect her game console to it. This was such a great idea that I immediately came up with a plan to make it happen. The cabinets at the front of the theater have three compartments. One is used by the subwoofer and another by the center speaker. That left one position open for a game console, and the obvious choice for adding external connections to the theater.
I used black panels and inserts to fit in with the room decor. I opted to use the keystone system to build the panels exactly as I wanted. Keystone panels provide 2, 4, or 6 holes and a large collection of jacks to fill those holes. With this system it was easy to create what I needed. Since the DE-15 connector is too large to fit in a keystone hole, I searched and found a plate that has this connector pre-mounted with two keystone holes underneath (in black).
Some time after I finished this project I turned my attention to the subwoofer. Unlike a conventional speaker, a subwoofer is a powered device,
so its input is line-level via an RCA style jack. Subwoofers typically
power on automatically when they sense something on the input, then
power themselves off after a period of no signal. But powering on is not
instantaneous: it can take up to a second before the subwoofer is ready
to make noise. For most movies this arrangement is not a problem.
One night I was watching Breaker Morant and I noticed that the subwoofer turned itself off in the middle of the movie. Breaker Morant only has a 2.0 soundtrack and the subwoofer is used very little. The period of time between uses was enough for the subwoofer to shut off. But that meant a lag between when it received a signal and when it was ready, so some of the low level effect was lost. This simply would not do.
receiver provides three 12-volt triggers. A trigger is an output that
can be used to tell another device when to power on. So I connected one
of the triggers to the subwoofer. When the receiver turns on, it sends a signal on the trigger, the subwoofer turns on and stays on until the receiver shuts off.
Today I have a clean front wall in my theater. Connecting a game console to the theater is easy, and the results are just as impressive as any movie.