DS18 2x 6.5" Mid-Range Loudspeaker and 2x 4x6" Coaxial Speakers with Tweeters. All New DS18 products are sold with a 1-Year Limited Manufacturer Defect Warranty. based in Miami, FL. Black Diamond 2-Way Component Speaker Set, 2 Speakers, 2 Tweeters, 2 Crossovers.