Hi im new to this forum and just fit a sub in my car which is a very small toyota aygo , my sub is a 10" Hertz Hi Energy (900w) and i have an Earthquake 2000w D1 amp (1000w RMS) It is fitted in a vented box. Its the loudest i have ever had! and with all the settings on the amp still on minimum it is still trying to push the front screen of my car off (really) what do you think would be the spl for my car ? and all i paid for them all new is 324 euros //content.invisioncic.com/y282845/emoticons/smile.gif.1ebc41e1811405b213edfc4622c41e27.gif