Improve the clarity and bass extension of the music in your BOSE-equipped ND Miata! The factory BOSE system leaves a lot to be desired in terms of audio quality. The cheap paper cones and plastic chassis of the factory units is half-rate quality at best. You could upgrade with many different brands and models of aftermarket car audio speaker, but the BOSE system is designed for door speakers with a 2 ohm impedance, while almost all the offerings out there have a more traditional 4 ohm impedance. Put simply, you might get a higher quality sound, but at a lower output… Not a compromise you want to accept, especially with the top down! These 2 ohm CDT woofers are a very rare find that fit snugly in the factory location using our included laser-cut aluminum adapter plates AND match the impedance of the BOSE system ideally. They feature a cast basket, kevlar/fiberglass cone, butyl surround, and all the features you’d expect in a high end, audiophile level driver. Rated at 100W each, these woofers can be powered by a dedicated aftermarket amplifier OR simply driven by the factory BOSE amp, using the included pigtail adapters. No harness cutting/splicing required!