The CT Sounds HD-1 is a 300-watt compression horn driver engineered for mid-frequency audio reproduction. The universal 1-⅜” screw-on connection provides easy installation in midrange applications or small PA systems. Crafted with precision and innovation, this horn driver features a professional-grade electrical system engineered for exceptional clarity and detail, thanks to the ferrite motor and copper-clad aluminum voice coil. Furthermore, the phenolic diaphragm reproduces every nuance of your favorite track with pristine accuracy. General Specifications: Product Type: Compression Horn Driver Product Size: 1" Impedance: Single 8-Ohm RMS Power: 150 Watts MAX Power: 300 Watts Tweeter Specifications: Voice Coil Size: 1" Voice Coil Winding Material: CCAW Voice Coil Former Material: KSV Diaphragm Material: Phenolic Magnet Type: Ferrite Output SPL (@1w/1m): 108 dB Frequency Response (@SPL -10dB): 500 Hz - 13 kHz Sweep Voltage: 3V Recommended Crossover Circuit: 3.3 μF capacitor / 100 V Recommended Crossover Filter: 12 dB / octave Recommended High Pass Crossover: 2.5 kHz Mounting Info Install Specifications: Overall Diameter: 4.41" Overall Height: 2.95" Horn Exit: 1.00"