I have two of these in my car man do they hit if you sit in the back seat you can actually get a massage. It sounds really good I have them in a mediocre box right now but it doesn't hesitate to shake the house. I park down the street and I can still hear the bass shaking my house I feel bad for my neighbors for keeping me up with their music at night now it's my turn! But really these do not need much room to make themselves heard they are loud i like how they are made air suspended but these cannot handle more than one thousand rms for sure they will start smokin and eventually burn so keep it exact or less than 1000rms.