This 25cm Subwoofer has a robust thermal management system, implemented with an Aluminum Bobbin, Closed Yoke Design, and Advanced Airflow Control. The X-Motif Cap (Injection Molded Polypropylene) controls resonance frequency and cut away unnecessary high frequency sound to deliver powerful, solid bass.
The New Kenwood KFC-PS2517W is an awesome looking subwoofer. Double stacked magnets help for improved power handling and cooling for extend use without fatigue. The new X-Motif Cone design not only looks cool but actually is light and stronger resulting in a fast and more accurate detailed bass response, lows are lower and kicks are harder and faster. The steel basket has new forced air cooling design so the voice coil is cooled by the air pumping from the speaker, neat technology! Overall the new woofer gets my support as one of the best in its price category, take a look at the In Phase XT-10 as an other option.