Focal SUB P 25DB

Polyglass series 
The Performance line’s P 25 DB subwoofer has a nominal power of 250W RMS. It is ideal for using with sealed or bass-reflex enclosures. Its 2 x 4 Ohm double voice coil gives you various options for hooking it up to an amplifier.
The Sub P25 DB really gives your car audio system an upper edge. It offers high power handling thanks to the 2″ (50mm) voice coil with a Kapton frame, and to the 511/16″ (145mm) double ferrite magnet. The butyl suspension gives the subwoofer more durability, and the decompression of the spider ventilates the voice coil. This enables your system to achieve extreme performance with pronounced and tight bass.