I was looking for some subs to put into my car. I had tons of offers and tons of choices, but I was on a low budget. I saw these 2 12" subs in a box, with a 1200 watt amp, and everything needed to install for 250. I bought them, installed them, then went deaf! These subs are INSANE!!!!! They are extremely loud, and are excellent for the buy. We had a test done, and it went a little over 100 DB. For 2 12's that's pretty good. The down side, is that there amp seems to overheat easily depending on the gain setting. I do suggest getting a cap, so they will hit a lot harder. I always thought MTX was just a name, but it proved me wrong. another down side (well, not really) is that it was a sealed box, and the box is very small for housing 2 speakers. everything in my car shakes. and everything around it shakes too. the last downside, is that it has a preset to 2 OHM's. you can get it changed, but i kept it the way it was. i will say, that if you get this system, and it doesn't have the 1200 watt amp, you will be missing out.