This RDCARSHOW RD-MB444 Slim Professional Midrange Speaker boasts a powerful neodymium magnet that delivers top-notch sound quality. With a sensitivity of 95 dB and a frequency range of 115-8500Hz, this mid-range speaker is perfect for those who want to enhance their car audio system. Its KCCAR voice coil material and 44.4mm voice coil diameter ensure that the sound is clear and crisp. The 6.5in. speaker size and 8 ohm nominal impedance make it compatible with most car audio systems, while its maximum power of 400W and RMS power of 200 provide a great balance between power and sound quality. This speaker is a great addition to any car audio system, and its model, RD-MB444, is sure to impress any audiophile.