The JBL / Selenium D200 is a Compression Driver that includes a phenolic diaphragm designed for medium and high frequencies. It features assembly without necessity of screws, providing great flexibility in exchanging and guaranteeing bigger protection against humidity. The basket is made of a high temperature resistant synthetic material. The voice coil is made of high temperature wire wound on kapton former to withstand high operating temperatures. Specifications: Power handling: 50 W RMS / 100 W maximum Nominal impedance: 8 ohms Voice coil diameter: 51 mm Frequency response: 500 - 7000 hz SPL: 107 (horn)/ 116 (plane wave tube) dB 2.8 V / 1 m DC resistance: 6 ohms Voice coil winding length: 5.7 m Voice coil winding depth: 3 mm Diaphragm material: phenolic Flux density: 1 T Volume displaced by tweeter: 0.5 L Throat diameter: 25 mm Minimum recommended crossover: 500 hz Magnet weight: 290 g Net weight: 1022 g Connectors: push terminals Horn connection: screw on 1 - 3 / 8"- 18 TPI Depth: 69 mm Magnet diameter: 102 mm Magnet height: 10 mm Package contents: D200 Selenium speaker Owner's manual