Better is hardly!

Have no knowledge of the installation of such devices, has but then worked quite well using.

Installed, connected and turned on, and what can you say? More than I would have wanted in my dreams!
Of course, this is not a Double 30cm Subwoofer with 1000Watt but for the size and the price, it is probably the best thing you can get!
I use it more as bass support and he carries out his work perfectly and although I have set him only half power.
And if you take turns on a Bass song Let term the car vibrate so strongly that you can not see much in the rearview mirror.

This subwoofer is more than worth its money and I recommend to everybody looking is this subwoofer!