I'm curious if it's just me or is anybody else bothered by a very high pitched electronic sound coming from the Xantrex Inverter during charging, float charging or inverting. Hunter has placed these in the settee of the main cabin and to me the sound is so intense that I need to shut it down to be able to occupy the cabin. It's like ringing in your ears to a very high intense level. I have been told that Pure Sine Wave inverters do not act in this manner ( and the stock Xantrex is not a Sine Wave model) and I'm baffled as to why Hunter would install it in the middle of the main cabin.