The Pyle PDS182 1.5" Titanium Screw On Horn Driver may be small, but it packs a big punch, providing 240 W peak power. It's all because of the 13.5 oz. neodymium magnet with titanium diaphragm, ultimately achieving a frequency response of 1500 Hz to 20 kHz. The 1.5" flat aluminum voice coil provides rich mids and sweet highs. It fits horns with 1-3/8" x 18 TPI threads.