The Seismic Audio T Driver is a Titanium Compression Horn that is ideal for replacing old drivers or upgrading to a more higher end horn driver. The T Driver will give you the crisp clean highs you desire with a frequency response of 1.5K - 20K and 100 watts RMS each. These will fit all horns with a 1 3/8" thread.. The Seismic Audio brand was designed to make the professional musician, as well as the musician low on cash, sound great. With your purchase, you will receive four titanium compression drivers pictured and described above. So, put it in your cart today and get ready for years of trouble-free, crystal clear sound!