Originally Posted by Erik Tracy
I'm budgeting out the AC Power connections for my HT set up via a dedicated 20 amp circuit I had put in my house when we moved in.
I'm looking at all the AC power requirements for the different components I've got in my set up and was wondering about the V1800.
The on-line specs say that it consumes a *whopping* 1100 watts!!
I'm wondering if that is inclusive of the two ac outlets on the back of the unit.
Assuming I choose not to connect any other components to these power outlets, is the power consumption of the V1800 a more moderate amount?
I'm using a Audio Power Industries "Power Wedge" AC conditioner for my components and plan on directly connecting them to this unit for the power.
But the 1100 watts of the V1800 is a hefty bite out of the overall power budget.
I can't imagine that the 1100 watts includes the accessory outlets on the back (these are rated at 100 watts apiece). Thing is, though... in order to pull the full 1100 watts from the AC line, you'll have to have all 7 amplifiers maxed out, and I doubt that would ever happen except for very brief moments during intense soundtracks, and even then you'd be driving things pretty hard. All that power is for headroom more than anything.
I sure wouldn't worry about it. Unless you're doing something weird, a 20 amp circuit is probably overkill for your whole system.
I run my 1800 a little above "theater" levels all the time with a 32" CRT TV, 250 watt subwoofer, and all the other junk that goes with it all on a 15 amp circuit. Never had a problem.
It'd be fun to measure it, but I'd be surprised if the Yamaha ever pulls much more than 4-5 amps off the AC mains. 1100 watts is almost 10 amps at 120V. At idle (volume all the way down), it's surely under an amp or two. The power consumption is directly related to how hard you drive the amplifiers (plus a little overhead for the display, onboard computer and other circuitry). It won't draw 1100 watts just by virtue of being powered up.