I have a fairly large home theater system who power is regulated / conditioned by a Monster Power Signature AVS 2000. This Monster has large capacitors which kick in whenever there is a current rush from our Martin Logan Depth subwoofer, Martin Logan Vantage main speakers, Denon AVR-3311Ci receiver and Panasonic 65" plasma HDTV. It kicks in during every voltage dip (and we have a lot). The Monster has worked flawlessly in 2 homes for 10+ years, and both homes had sketchy power.
OK, not looking to go too far off topic (or turn this into AVS forum), and I have nothing against Monster or their products, but note that those power conditioners they sell are just very fancy line conditioners and/or isolation transformers with a few extra features. For a fraction of the cost of one of those, you can just get a line conditioner/isolation transformer (depending on the issues you are trying to solve). Tripp Lite is an excellent example:
Power Conditioners | Tripp Lite
Just, very boring looking compared to the Monster product.
I also switched to Blue Jeans Cable (
Blue Jeans Cable -- Quality Cables at Reasonable Prices), but I used to use allot of Monster cable in my setup.
Right now I am using an APC RT series double-conversion UPS. It actually out-performs some of the stuff I have tested that was "made for home theater" in so far as line noise and such. I put all the non-amplifier type stuff on it, especially the projector so that bulb doesn't explode in a power outage. The only issue with it is that it is noisy at high loads, so it is located in another room.
For the new theater I am currently building, I am going to have my electrician put in one of these:
ground1.com - Power Distribution
That will give me full isolation for the whole thing, and I will still use the UPS as well.
Needless to say a comparable home theater grade voltage regulating device would probably be a lower cost alternative than a power panel upgrade.
Note also that, in the scenario I am describing, a line conditioner type device would actually make things worse. Yes it could offer *some* dampening of the transients when you turn equipment on, but that is not specifically what they are designed to do. When you draw more load on the equipment side, they will draw more current on the mains side in order to maintain 120V on the equipment side. This protects your equipment, but it does also increase the draw on the breakers in your electric panel, not decrease.
I will only do the panel / line upgrade if the combined car+theater+central AC+everything else actually becomes a problem. I am going to buy one of these Sense power monitors (
Sense - Home Energy Monitor) to actually see how close I am. It would be great if I can fit everything into 100A service. And from the information provided on this forum, I am comfortable that I probably won't ever need the 78A charging for the car.
-JCL