The C173 – 6 – 191E is a 6.5 inch bass-midrange driver with ultra hard ceramic dome. Anti - resonant cutout fills in the ceramic dome provide for damping of the 4 kHz dome resonance. A FEA optimized overhung motor design with 38 mm titanium voice coil former guarantees very low energy storage and good heat transfer. The high shape rubber surround and a thin fabric spider center the moving parts with high linearity. As a typical home stereo bass - midrange driver, we recommend our C173-6-191E for an application from 35 Hz - 2800 Hz.