DESC: The Boss Audio D57.2 2-way 5x7-inch speaker is designed to compliment any in-vehicle audio system. Equipped with a 1-inch aluminum voice coil and a 1-inch mylar dome tweeter, this speaker will sing with the best of them. DIABLO speakers utilize high quality poly injection cones with rubber surrounds for top performance. A custom tooled bridge houses midranges and tweeters for outstanding mid and high frequency response.