SDF Woofers & Subwoofers The Peerless SDF series is a line of high-performance woofers & subwoofers built for more bass in smaller-than-traditional enclosures. Each driver utilizes a 3″ voice coil and robust ferrite magnet system, enabling higher power handling, enhanced low-end response, and more linearity. Key Features: Size Range – 10″-15″ Diaphragm – Paper Motor – Ferrite Now shipping is the SDF-250F75PR01-06, a 10” subwoofer featuring a newly tooled aluminum frame, built for extra rigidity and heat dissipation along with a vented paper cone for reduced air compression. The driver is built for high-performance, high-excursion consumer and Hi-Fi applications. Optimum Vented Box Box Volume: 60L Vent Diameter: 10.2cm Vent Length: 37.81 Optimum Sealed Box Box Volume: 30.3L Find a distributor About Tymphany