GLADEN GM-ZERO165 6.5″ 2-Way Component Speaker System – Pair

High-Quality Components are used for GLADEN Loudspeakers, Which are Based on the Highest Standards! ZERO 165 Component Speakers (165mm)High-end system consisting of a 165 mm woofer and a 25 mm dome tweeter (Always in Pairs). A passive crossover is included for the speaker system (Not for AC active version). The complete Gladen Zero speaker system is designed and built in Germany.  Please Note: For the installation of the tweeter in original mounting locations, the plastic housing can be disassembled. For optimal alignment of the tweeter, the optional Gladen PODs can be used. Specifications: DC Resistance RDC: 2.8Ω Nominal Impedance: ZN: 3Ω Resonance Frequency FS: 60.46Hz Voice Coil Diameter: 25mm Mechanical Q Factor QMS: 3.71 Electrical Q Factor QES: 0.58 Total Q Factor QTS: 0.50 Moving Mass MMS: 12.12g Effective Piston Area SD: 135cm2 Mechanical Resistance RMS: 1.24Kg/s Compliance CMS: 0.57mm/N Force Factor BL: 4.7 TM Equivalent Air Volume VAS: 14.63dm3 Efficiency η: 0.53% SPL 2.83V/1M: 93.84dB Weight: 3.54kg