AL-4200 (5.1-ch Home Theater Speakes for Plasma TV. Hang on the wall and stand on the floor for your option ) Technology: Speaker driver size: 4"+1"+4" Driver component: Paper+Rubber edge Speaker frequency Range:75-20kHz Sensitivity (lm/W):87dB Impedance:6 Ohm System Power rating:50W Speaker terminal:Clip type Magnetically Shielded:Yes Cabinet material:Aluminium Dimensions (WxHxD):147*640*75mm Color:silver We are professional manufacturer of Home Theater Systems, All kinds of Speakers and Subwoofer with over 8 years' experience in this industry. OEM and ODM are welcome. We can offer a wide selection of quality products for your market, and sufficient supplies and on-time delivery are guaranteed. - International standards met:UL, CE, Iso9002 etc. - Employees: 1000 - Total Investment: USD3million Website: Email: Contact:Susan Tel:86 755 8386 0055 Fax:86 755 8386 7258