Visaton FR 7-4 2-1/2' Full-Range Driver 4 Ohm 20159.71Buy!$Newegg.comDelivery: in USA ReportThe FR 7-4 2-1/2' full-range has a mounting depth of only 1-1/8' making it ideal for situations where space is at a premium. With useful response up to 20,000 Hz this driver is a great choice for port more→able speakers, line arrays, and even industrial applications.