Alpine BRV-S40 BassRev™ 4" 2-Way Car Speakers Motorcycle Subwoofers an operating frequency of 42

an operating frequency of 42 to 65 kHz and 130 to 210 kHz

GPS 24xd NMEA 2000®

Equipped with BLUETOOTH wireless technology and the Qualcomm® aptX™ HD audio codec

93 Grilles Both White & Charcoal Crossover (rec

Alpine BRV-S40 BassRev™ 4" 2-Way Car Speakers Motorcycle Subwoofers an operating frequency of 42High res audio certified The Alpine BRV S40 4" coaxial speakers are an excellent way to add life to your sound. In fact, they're Hi Res Audio Certified by the Japan Audio Society (JAS). These coaxial speakers combine rigid, high excursion woofers with 3 4" tweeters in a combo that Alpine has designed and tested to maximize the Optim DSP output from select Alpine amplifiers. The woofer features Alpine's new H. E. D. G. E. multi roll surround with a