eMagTech 2x 2.5-Inch Piezo Tweeter Ceramic Speaker Driver 18TPI Thread Compatible with Motorola KSN1142A

Compatibility: Compatible with Motorola KSN1142A Featuring an 18TPI thread (1-3/8 inch thread, 34mm thread opening), this unit requires unscrewing the old driver, screwing on this one, and reconnecting the wiring to restore operation. Materials: A ceramic piezoelectric element bonded to a lightweight copper voice coil is encased in a PP housing; suitable for touring, outdoor installations, or marine mounting. This driver is 2-1/2 inch (65 mm) in diameter and 68 mm in height, making it lightweight. Electrical specifications: Impedance: 4-8 ohms; Power: 75-150W; Withstand voltage: 12-18V; Frequency response range: 2.2K-27KHZ