Eminence ASD:1001 High Frequency Driver， 8 Ohms<div style="text-align: left;"><strong>[Product Information]</strong><ul><li><span class="a-list-item"> Throat Size 1"， 25.4mm </span></li><li><span class="a-list-item"> Nominal Impedance 8 ohms </span></li><li><span class="a-list-item"> Power Rating 50W @ 2.5kHz </span></li></ul></div><img src="http://ecx.images-amazon.com/images/I/41MGfPtOASL.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/513694%2BbbAL.jpg" noproxy>