I have had another set of these Alpine Type R in a different vehicle. Not the shallow ones like I am installing in my truck. I had the regular Type r 12" woofers. Man, these things pound hard We're going with them again. Boy these things rock. I am adding a new system to my drive to work truck. So, it's going to be stealth and great sound quality on this build Sundown 200.4 and a 1500.1 Salt amps and two sets of Sundown 2 way 6.5" components. AudioControl DM-608 DSP teamed to an Alpine ILX-409 Double din HU. This is going to be a monster system