Check the listing for details. (2) Two Replacement for Motorola KSN1142A Piezo Horn Driver. Condition: New. Listed at 12.99 USD. (2) Two Replacement for Motorola KSN1142A Piezo Horn Driver.Aftermarket Bullet Horn Driver Similar to KSN1142A. Product Details :This A Brand New specifically designed and engineered to be a replacement for the very popular KSN1142A piezo tweeters from days gone by. Using a 22 mm ceramic piezo element, Standard 1-3/8" 18-TPI threads facilitate use with 1" horns. With a wide frequency range and ample power handling, this is also a prime candidate for new designs, especially if the crossover requirements must be kept to an absolute minimum. Specifications: • Power handling: 400 watts max• Frequency response: 1,800-30,000 Hz • SPL: 92 dB 1W/1m • Dimensions: Diameter: 2-7/16", Depth: 1-1/2".PRODUCT SPECIFICATIONS: Mounting Type1-3/8"-18 TPIExit Diameter1"Diaphragm MaterialPiezo CeramicPower Handling (RMS)200 Watts PIEZO BULLET HORN DRIVER SIMILAR TO KSN1142A Model Most Orders Placed Before 3PM and Paid thru' PayPal Are Shipped The Same Day;Monday to Friday.