Quick view Niles Audio RS6Si PRO - Shale Brown RS6Si-PRO Shale Brown Stereo Input Rock Loudspeaker; 6-in. Two-Way Can be used in mono, two-speaker stereo, or single-speaker stereo input "Si" modes. Features: NoFade Protective Paint Weatherproof design that surpasses military standard 883 for... MSRP: Was: Now: $360.00 Add to Cart Compare