Solar charged battery system providing electricity for audio system

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The performance of the inverter is critical here, and these vary a lot.  one needs a true sine wave inverter, and hopefully one with very low distortion.  There are Plenty of bad inverters out there.  You would want a true sine with distortion at full output of (hopefully) less than three percent.  One might also be able to add a powerful regenerator to correct fro the effects of a less than perfect inverter, but one would want to consult with the regenerator manufacturer to be sure it will not be adversely effected by the output of the inverter.

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13 minutes ago, AudioDoctor said:

 

While yes a wood burning fireplace is romantic...  I think it is also an important safety backup in a Minnesota winter. Having an empty tank of propane and 4 feet of snow on the roads preventing a fill up is a real concern.

Indeed, same here at 9,300' in Colorado!  As well, sometimes there are power outages, and my boiler is electronic ignition, so it will not run if the electricity is out.  So a wood burning stove is an essential backup heat source.