Originally Posted by Mark Seaton
Don't assume the UPS is a huge benefit. It's nice to not have a projector randomly shut off on you, but many UPS products, while likely regulating Voltage, can produce a lot of noise on the line in the process of re-creating the sine wave. The systems I've seen use a UPS for full system power all used an isolation transformer on the output.
Personally I'd insure you have an effective ground for the system & service and dedicated power isolated from lighting circuits, and save for a quality isolation transformer. Protection wise, the best would be series mode protection from companies like SurgeX, Torus Power (paired with premium isolation transformer), and some Furman devices (not all).
For actual load, the 4kW capable amplifiers idle at the same power (17-20W) as the 2400W versions. More importantly, the F2+ & F2-slave unit actually require ~1/2 the power to produce the same level as a single F2. The pair only draws more power when asked to deliver 3-6dB more than a single unit. The average power draw is often rather low, where 1000W is a safe design power level per amplifier if you aren't pushing really hard into the limits, 2000W if you want to really get silly and never worry.
Yea, it's one of my attempts to stage into my equipment. What's specked is the 6 kva UPS powering a step drown transformer, which has isolation and a whole lot more (A/V wise) included, but I was trying to get some protection short term and then stage up to the full protection/isolation later.
I may just hold off on the full rack mount, and just go with a UPS for the projector with an isolation transformer built in, and then just go with good surge protection for the rest of the equipment.
How does Submersive amp and/or surge protectors you mentioned do with brownout conditions? Lots of thunderstorms around here, and two things that happen pretty commonly is power going off for 3-10 seconds, or power going off and then coming back with 5-20 seconds of brownout conditions, or power never going off, but lights dimming for 5-20 seconds or so.
It's the on/off and brownouts that always worry me. In my current house, every TV/projector, DirecTV reciever, and in a couple cases AVR, are on UPS's. That's the reason I was leaning towards a 6kva unit to power it all and bridge the brownouts and quick off/on's.