Check the listing for details. Pair of (2) Technical Pro Replacement Driver Horn Tweeter. Condition: New. Listed at 24.99 USD. Technical Pro Horn Driver Tweeter.Similar to PZ1188 Piezo Horn Driver and KSN1188A The TPPZ1188 is specifically designed and engineered to be a replacement for the KSN1188A piezo horn drivers and others. Using a 22 mm ceramic piezo element, follow 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. This 125 watt driver incorporates advanced protective circuitry which allows it to be used at power levels of up to 500 watts.Specifications: Power handling: 125 watts max Frequency response: 800-20,000 Hz SPL: 93 dB 1W/1mDimensions: Diameter: 4", Depth: 3"Price for 2 Weight : 6 ounces