I have b2 rampage 8" v2 Carbon on 1000w at 2 ohm. It sounds great, plenty of power, shaking my car badly but after braking in for around 50-70 hours of playing loud. Before breaking in i was little disapointed. Sundown its on 1000w at 4 ohm. Its not even break in, very stiff and almost impossible to move it by hand. I already feel that x8 is more powerful, sounds really good, shaking car even more than b2 and it kicks you in chest :D dont know if my car will survive after break in. Im happier with x8. B2 is ok but x8 its better even freshly installed from box.
X8 v4
Sascha Donner
Housing 130 liters
The subwoofer cabinet is good so far, it just needs to be built more solid but otherwise a great cabinet for the money, I can only recommend it.
BR15-130 Slot
Kilian Lothe
Reception nickel colis propres sans qu'il soit piqué ou autre parfait