Or you could buy two SVS SB13 Ultra subwoofers at 1/3 of the cost of the Gotham and probably not be that far off the overall performance. In fact you can probably better it in some ways as you can seperate the SVS subwoofers and most likely acheive a flatter overall response. Then you can sit back and enjoy them safe in the knowledge that you have just saved over £7000.
Or if you were really serious about your bass you could go with a Quattro stack of DXD12012 subwoofers and still have over £3000 in your pocket and no doubt have performance way beyond what two Gothams could achieve.
I doubt that JL make bad subwoofers but they just do not seem like good value for money to me. Looking impressive does not help balance the price vs performance ratio.
No. No. Similar to who? Not quite sure what your getting at.
My comments are mostly based on spec comparison between JL and SVS as well as what seems the best value for money right now which is KK. The recent reviews say a lot more than I ever could but it seems that any one with an opinion on various models is better keeping that opinion to them selves.
But if you want more options there is Paradigm and Velodyne that could also be brought in to the equation. Sub15 .. Sub25 .. Sub1 .. Sub2 .. DD12+ .. DD15+ .. DD18+
There are even options from Seaton or Power Sound Audio or JTR that can be imported at much lower prices than the JL can be purchased for.