Jensen 200W Amplified Subwoofer - 8". This durable subwoofer meets ASTM B117 salt fog and ASTM D4329 specifications. The frequency ranges from 60Hz - 200Hz. Ohms: 4. Voice coil: 38.1 mm. 200 Watt power. Specifications for Jensen JMPSW800 200W Amplified Subwoofer: Manufacturer: Jensen Color: Black Battery Type: Sealed Lead Acid Battery Quantity: 1 Features of Jensen JMPSW800 200W Amplified Subwoofer Max Power Handling: 200 watts Power System: 12VDC Slim design Built-in amplification Black anodized all aluminum enclosure Mate-in-lock connectors for easy installation Adjustable gain and crossover Low (line) level inputs Frequency: 60Hz-200Hz Vertical and horizontal mounting provisions Dimensions: 13.6"W x 10.4"H x 2.9"D Package Contents: Jensen JMPSW800 200W Amplified Subwoofer Jensen JMPSW800: JMPSW800 200W Amplified Subwoofer - 8"