highest I've done with a single 8, is 134.3dB, dB Drag style, Street A legal setup, cheapo 8inch sub, and about 200watts //content.invisioncic.com/y282845/emoticons/smile.gif.1ebc41e1811405b213edfc4622c41e27.gif in a station wagon //content.invisioncic.com/y282845/emoticons/crazy.gif.c13912c32de98515d3142759a824dae7.gif it was at 44Hz.