Built for loud, clear vocal performance in tight, compact spaces, PRV Audio’s MT8MR400CF-NDY-4 SLIM midrange features a sensitivity of 95 dB and weighs about 1.63 pounds! 4 ohm impedance. MOTO Series is dedicated to delivering outstanding pro audio performance to your motorsports application. Everything about this speaker has been designed for reliable and consistent high output levels in a wide frequency bandwidth between 120 and 12,000 Hz, giving you the option of eliminating the need for a super tweeter on your system!