You have a great idea going. You have isolated the listening room entirely, and have been very good at planning this whole idea. Having had some experience with batteries and converters, I would say that as long as you have what you need in battery power to begin with, the only other concern would be a decent sine wave converter. Most of what I have heard is that these devices usually provide an inferior (spikey) sine wave compared to commercial power. It might be a thought (and yes, more power needed) to run a PS Audio regenerator to make right that which will be imperfect from your AC power source.
Off the Grid Listening-HELP!
In the next year, I am going to have to move my dedicated listening room to being off-the-grid. I would love to hear from anybody with experience in this area.I am just in the beginnings of doing research, but if anyone can accelerate this process I would appreciate it. I would need to power my turntable, a phono pre, tube pre amp, tube mono blocks and a couple of class D sub amps. I know that I need a pure sine wave inverter (how big, what brand?) and a couple of deep cycle batteries. Is there any easy way to calculate the size of the inverter and batteries needed? 12 or 24 volt system? Would something like a PS Audio regenerator be helpful too? This would only best used about 8 hours per week in four hour sessions. Thank you!