stable MDF cabinet with complex strutted and low resonant 22mm baffle fmax tweeter with very light 1� high quality cloth dome for extended frequency and dynamic range for SACD and DVD-audio reproduction woofer / midrange with �deep-space�- technology stiff and light cellulose cone with resonant damping coating elaborate voice coil ventilation for high capacity high quality connection terminal with Bi-wiring/Bi-amping option and gold plated screw connectors bass reflex construction with double side rounded airflex ports complex crossover with high quality parts adjustable spikes elective rubberspikes