FeaturesPaper Cone Diaphragm with Polypropylene CapProgressive Height Rate Double SpiderLong Excursion StructureRubber SurroundPaper Cone Diaphragm with Polypropylene CapA lightweight paper cone diaphragm directly connected to the voice coil reproduces tight low end. The injected polypropylene dust cap ensures rigidity and optimizes internal damping realizing powerful and responsive bass sound.Progressive Height Rate Double SpiderThe acoustically-optimized spider allows for higher power handling and airflow with a profile designed for more rapid and precise cushioning of the speaker cone. To increase signal integrity and prevent sound interference the lead wire from the voice coil is also sewn to the spider reducing wire movement.Long Excursion StructureThe voice coil is supported by the double-layered spider suppressing unwanted rolling while also ensuring long excursion to reproduce rich bass sounds.Rubber SurroundRubber surround reduces excessive vibration and supports cone excursion with less distortion. Result is solid bass response at high volume levels so that your system can play loud and clear.Environment In MindSony products are not only designed to be stylish but also with the environment in mind. For the individual packaging of the XS-W104GS 98% of the cushions are made of paper materials and compared to the prior model printed information has been carefully considered for simplicity and length to reduce printer ink usage by approximately 90% reflecting Sony’s commitment to reducing environmental impact.What's in the BoxXS-W104GS 10" SubwooferDetachable GasketWarranty CardSpecificationsSpeaker SystemConfiguration: Single Voice CoilSize: 10" (25 cm)General FeaturesPeak Power: 1500 WRMS Power: 350 WRated Power: 300 WEffective Frequency Range: 27-500 HzOutput Sound Pressure: 83 dB ±2dB SPL (1W1m)Impedance (ohms): 4Diaphragm Material: Paper Cone with PP CapMagnet Material: FerriteSurround Material: RubberSize & WeightWeight: 8.37 lbs