https://www.ebay.com/sch/i.html?_nkw=18+Sound+Hf+Compression+Driver+W+1+Inch+Exit+Throat+8+Ohms+High+Power&_sacat=0&_dmd=2

18 Sound Hf Compression Driver W/1 Inch Exit Throat 8 Ohms High Power

Regular price
$157.00
Sale price
$103.00

* 107 dB SPL 1W / 1m average sensitivity * 44 mm (1 3/4 inch) voice coil diameter * 100 Watt program power handling * Titanium dome over PEN suspension * Proprietary phase plug design * Throat Diameter 25.4 mm (I in)* Rated Impedance 8 Ohm*