Function: 1. Wide-dispersion speakers: 2 piezoelectric horn tweeters, maximum power 75 or 150W, frequency 3‑20KHz, sensitivity 98dB, ceramic converter, wide-dispersion speakers. 2. Excellent acoustic performance: The Piezoelectric Tweeter has excellent acoustic performance and excellent smoothness in the operating range from 3 kHz to 20 kHz. 3. Upgrade Optimization: 75 or 150W power These high-end professional audio tweeters are optimized for all musical instruments, DJs, automotive audio equipment and professional applications. 4. Overall: The dual tweeter is the perfect replacement. Widely used in tweeters, scattered tweeters, teaching garden bird singing, bird-guided bird tweeters to equip birdhouses. 5. Application: for professional DJ speakers, Pro PA speakers, professional karaoke speakers, live audio speakers, fixed installation speakers, studio monitors and home audio speakers. Specification: Item Type: Speaker Material: plastic Size: approx. 160 x 94 x 103 mm or 6,3 x 3,7 x 4,1 inches Minimum hole size: approx. 124 x 54 mm or 4,9 x 2,1 inches Frequency: 3-20 KHz Sensitivity: 98 dB Maximum power: 75, 150 W Impedance: 4-8Ω List of packages: 2 x Horn