My airbreeze wind gen has a particular sound
I had a rutland 913 fitted before the airbreeze.
The airbreeze is several KG's lighter, and a lot more powerful.
the sound it gives is a pretty distinctive and I quite like it.
When im becalmed or ghosting along and the airbreeze starts, I get all excited and start mucking about with sails n stuff. the point where the air breeze starts to spin is the point where the boat starts to drive under sail (8kts of wind)
it doesnt start charging until the wind is a bit speedier though.
I don't notice it most of the time. but thats probably because I mostly sleep in the forward cabin and I also have music playing most of the time. I rarely turn the turbine off.
unless its proper howling wind and then I pull the bit of string round to stop the blades when it's too windy for the automatic braking system.
also, just to add to that, I used a rutland mounting pole kit then added my own "shim" to the pole to fit the larger collar of the air breeze. I made the plastic shim out of a bit of a plumbers tubing.
the Rolls batteries:
https://goo.gl/photos/R13HmQPq2J1LgnaY8