Pioneer TSDR250PRO Pro Screw On Driver<div style="text-align: left;"><strong>[Product Information]</strong><br><ul><li>Size:   50 mm (driver) and 140 mm (horn)</li><li>Max. Music power nominal :   200 w (100 w)</li><li>Frequency response:    600 Hz to 10 KHz</li></ul></div><img src="http://ecx.images-amazon.com/images/I/51ifm1dn-mL.jpg" noproxy>