These subs are worth every dollar and when wired and set up CORRECTLY, peform flawlessly. Very flexible and can hit a wide range of frequencies for different kinds of bass to your taste. As an installer for over 15 years I cannot stress enough how important it is to match your gains on your amps to the rated watts based on your head units pre-out voltage. MOST people fail to do this and then complain they sound like crap or they blew it.