Atlantic Technology - THX Select Certified Dipole/Bipole Surround Channel Speakers - 4400SR-P-BLKFeatures: Physical Characteristics Weight (Approximate) 11. 00 lb; Atlantic THX Certified Dipole Bipole Surround Speakers (Pair) Atlantic Technology 4400 SR Speaker 2 way Black THX Select Certified Switchable dipole bipole speakers Unique use optimized design A single pair can replicate the sound of the large array of surround speakers found in the best commercial movie theaters Has detachable magnetic grille Packaging: Carton Unit Of Measure Id: 10 *