D100 Compression Phenolic Driver is designed for medium and high frequencies in acoustic boxes for general sonorizations. Product Specifications Throat Diameter (in) – 1” Impedance (ohms) – 8 RMS (W) – 60 Watts Musical Program (W) – 100 SPL 1W @ 1m (dB) – 107 Frequency Resp. @ -10dB (Hz) – 1500 to 15,000 Rec. X-over, 12dB/oct min. (Hz) – 2000 Voice Coil Diameter – 1″ (25mm) Magnet weight (g) – 10 (290) – Barium Ferrite Housing material – Plastic Horn Connection – Screw on Weight (lbs) – 2.00