Visaton sc 47 nd full range oval speakers 48 ohm magnetically shielded visaton 8048 a magnetically shielded 4 x 7cm full range driver from visaton featuring a highly compact construction due to the neodymium magnet system includes a balanced frequency response from 220hz and good omnidirectional sound distribution making it suitable for music and voice reproduction in multimedia applications such as tvs pcs etc visaton 8048 sc 47 nd oval speaker 8 ohm fullrange