There's a shop near my house and they have a show car they built with 4 mojo 15s in a ported plexi box. looked nice but when I asked what it was tuned to the guy said " I'm not sure, I think like 80hz........" //content.invisioncic.com/y282845/emoticons/crazy.gif.c13912c32de98515d3142759a824dae7.gif