The noise complaints are numerous. So why doesn't Spondoolies address this issue and make an alternate version in a 2U rack size? I'm sure they would sell more units if they weren't so loud.
I thought my cointerra was obnoxious. Unless you have a room at the far end of your basement, this is not for you. I was really hoping to let it vent out the window. It's just to damn loud.
My SP10 is in a quiet rack cabinet:
http://www.acoustiproducts.com/en/ucoustic_active.aspI can't hear the SP10 at all, even standing next to the cabinet.