More on Amazon.com : http://www.amazon.com/gp/product/B00I9UFZ44?tag=purrfectcatdi-20 <br /> <br />Dayton Audio RSS210HF-4 8 Reference HF Subwoofer 4 Ohm <br /> <br />Extensively vented motor eliminates compression and allows quiet excursion <br />Lightweight black anodized aluminum cone for rigidity and lower moving mass <br />Suitable for sealed or vented enclosures <br />Triple shorting ring motor for ultra-low distortion <br />2-layer coil for reduced back EMF
