Usher 8137A Kevlar/Carbon Fiber 7″ Woofer

Usher 8137A Thiele & Small Ported Box=100 liters. F3=30Hz Ported Box=75 liters. F3=30Hz Ported Box=55 liters. F3=40Hz Ported Box=45 liters. F3=40Hz Sealed Box=55 liters. F3=55Hz, Q=0.71 Bandpass Box=55 liters. F3=40Hz-105Hz… Read more >