I love this sub. It produces unbelievable amounts of deep bass. For comparison I have a 18 inch tc sounds Lms 5400 in a sealed box and the earthquake can produce deep bass almost as loud at 1000 w. I wouldn't have bought the tc 18, if it weren't for the fact that it can take four times the power and sounds amazing. I had a large ported box sitting around ( 3.5 cu.ft. plus a 2.5 by 16 by 36 inch long slot port). I highly recommend this sub in a ported box tuned to around 25 hz. I run 750w rms to this sub for hours on end and it is still going strong.

this sub pounds so hard i would rec amend this sub to everyone never had a problem but the depth is wrong its says 6 3/8 but its really 7 7/8

pros giving two of these things 450 watts each very loud. excursion is actually 30.48 mm xmax.. super low lows . respectable highs and earth shaking bass only with 900 watts on 2. also got a ported box here to . works perfect if you invert them. Sonic Sub Box: 2SV15 (Black. i got some air moving . i listen to rap and dub step. sound amazing . Highly recomend this sub. looks and feel and sounds high quality con i tryed rock and they were not great. Con made in china

Wow this sub hits harder them any single subwoofer I have ever heard. I had this hooked up to a Boss ce3500 watt amp. Not much else to say besides earth shattering base.

Cons: ear damage

Pros: 5 year warranty.