JBL has pulled out all the stops with the creation of their top-of-the-line GTi series. The JBL 508GTi component system delivers an amazing combination of stunning clarity and powerful mid-bass. The super-rigid deep anodized aluminum mid-bass drivers feature optimized nitrobutylene rubber (NBR) surrounds and combine with integrated phase plugs for smooth, efficient bass response. The pure titanium tweeters with rubber surrounds offer remarkable clarity and can be flush, angle, or surface mounted for optimal imaging in any application. The laboratory-optimized 2-way crossover system features high and low-pass 3500 Hz filters at a super-steep 24 dB / octave with Linkwitz-Reily alignment for accurate response, and includes tweeter attenuation for user-selectable optimization. Includes mounting hardware and grilles.