Niles weatherproof rock loudspeakers consists of two series, each having three distinct styles. The RS6 Series features a 6 1/2 in. injection molded TCC woofer and a 1 in. Teteron tweeter. The RS8Si Series features an 8 in dual voice coil injection molded TCC woofer and dual 1 in. Teteron tweeters and can be used in mono, stereo or single-speaker stereo input "Si" modes. Speakers are available in sandstone, coral (pictured) and granite.