This thread is a great resource and it is a big relief for me to see just how much real-world gear you can run on a small number of outlets. My mind is a bit eased now; I've been a bit worried about this subject for awhile. I'm just beginning the painting and equipment install phase now.
I have three circuits going to my HT; 2 x 20-amp and 1-15 amp. This was spec'd out a year ago when designing this house which was built during 2015 and we moved into in August. The original equipment plan was:
2 x 20-amp circuits
for 2 x QSC RMX2450A for subs running 4-ohm stereo - these are old iron amps and current draw is high. I built dedicated 12v switched turn on boxes for each of the amps. Amps plug directly into the wall. This also allows me to step to bigger amps in the future.
1 x 15-amp circuit
for the PJ, AVR, cable box, BluRay player and HTPC
Pretty good plan right? I figured having dedicated circuits for the sub amps would really reduce the power draw for the 15-amp circuit that everything else was plugged into.
However my original plan did not account for dedicated pro amps for my seven main channels. Mid year, the price on the Gen I Crown XLS amps plummeted as the Gen II were released. Dealers were dumping stock quickly. Buying in quantity gave me a screaming deal on the XLS1500, so I bought five of them. I will bridge three for the LCR and run stereo for the side/back surrounds. The XLS are very efficient, so I'm not worried too much about steady-state power draw. It's turn-on I'm worried about. I know this much amplification is total overkill for a 3500 cf room, but that's the idea.
The amps will loaf along most of the time, but for those insane above reference level demos, the juice will be there.
In an attempt to negate the turn-on current inrush problem, I bought a Panamax M5300 power center which allows you to stagger turn ons. The five Crown amps, AVR, cable box, bluray will all plug into this. Hoping the Panamax takes care of my turn-on current inrush worries.