The ultimate in subwoofer quality, available to Demo via appointment only
By introducing our ‘M'-profile 'W' cone to a subwoofer for the first time, our engineers were able to develop an unparalleled product, integrating, amongst other things, a 4.7” (120mm) diameter double voice coil and a powerful neodymium motor. These innovations allow it to be integrated into a small sealed enclosure (10L minimum) whilst keeping exceptional dynamics and inimitable audiophile sound.
https://www.focal.com/en/car-audio/car-audio-kits-solutions/elite/utopia-m/subwoofers/sub10wm