Originally Posted by MichaelJHuman
People have hooked their entire home theater including multiple amps up to a 15 amp circuit and not popped . I have a plasma TV, receiver, and two amps plus some other sources like PS3 and Tivo AND lights, and have no issues on a 15 A circuit. Never blown a breaker, but I have dimmed lights, I think mainly if I turn on gear at same time. I am no expert, but a single 20 A circuit for your amps would likely ensure no dimming of lights and such under any inrush conditions.
Michael - thank you for your reply. Below is the wiring diagram for our commercial dinner theater. At max SPL, I may be pulling as much as 4,200 Watts from my eight Crown XLS amplifiers. Add to this a (1) DVR (TV), (2) Blueray, (3) DVR (Security), (4) 7.2 Preamp, and (5) server case fans.
Also, your lights can only dim if they are on the same circuit as something else that suddenly pulls a large load, similar to a circular saw plugged into a convenience receptacle that is tied to the lights. I plan to run a dedicated 20A circuit to the server case; so it would be impossible for the load to dim any lights. My issue is that I just have no idea what the power requirements are of the setup below and do not want to risk tripping a breaker if everything is cranked for a movie or a live band.