Selenium's D210Ti is recommended for use in monitor speakers, stage monitors and surround speakers in movie theaters. Compatible with 1-3/8"-18 TPI mount horns. Features Low-mass titanium dome diaphragm enables outstanding high frequency reproduction up to 20 kHz High temperature voice coil wound on a polyimide former for maximum reliability Precision engineered diaphragm structure and alignment mechanism Compatible with 1-3/8"-18 TPI mount horns Great replacement/upgrade for JBL Eon, Mackie, and other compact speakers' high frequency drivers Specifications Power handling: 80 watts RMS/160 watts program (with recommended 2,000 Hz, 12 dB/octave crossover) Minimum recommended crossover: 2,000 Hz (12 dB/octave) Voice coil diameter: 1.7" Throat diameter: 1" Impedance: 8 ohms Frequency response: 800-20,000 Hz (no crossover) SPL: 107 dB 1W/1M Magnet weight: 23.5 oz. Dimensions: 4.53" dia. x 2.83" D.