Extended Bass Response & High-Frequency Projection are Key Features of this Fantastic Set of Speakers! 6 x 9" 3-Way Coaxial Speakers - Pair The Audison APX 690 (Order Code APX690) features an exclusive 40 mm horn-loading dome tweeter that contributes to maximizing efficiency up to 96dB SPL and an acoustics lens specifically designed and applied to the tweeter to increase dispersion in the high-frequency range. To strengthen the emission of very high-frequency ranges otherwise affected by off-axis positioning compared to the listening point, the APX 690 features a super tweeter. Features: Horn Loaded Tweeter: 40 mm horn-loaded dome tweeter contributing to its incredible efficiency of up to 96dB SPL. Acoustics lens applied to the tweeter, specifically designed to increase dispersion in the high-frequency range. PEI (Polyethylene injected) super tweeter employed to strengthen emission of very high-frequency ranges otherwise affected by off-axis positioning common to rear deck installations. Water repellent treated paper cone, featuring a profile developed with FEM (Finite Element Method) simulation technology and optimized with the Klippel Scan Vibrometer. Pure copper mobile voice coil, wound on Kapton former, for better thermal and mechanical capacity. TPU (Thermoplastic Polyurethane) surround, featuring the exclusive shallow "Triple Wave" profile, for maximum excursion linearity. Polycotton spider material ensures reliable performance and linear response to musical transients. Large motor assembly, optimised with FEM (Finite Element Method) technology, for stable control and linear excursion. Low carbon content plates for maximum magnetic permeability and high heat dissipation. Compact basket, protected by abrasion-resistant and scratch-proof coating, the motor is affixed with damping epoxy adhesive. High current fast-on terminal with temperature-resistant plastic cover, protecting it against accidental short circuits. Developed with the KLIPPEL suite. Grille Included Specifications: System: 3-Way Coaxial Woofer Size: 6 x 9" Tweeters Size: 40mm + 15mm Power Handling - Continuous: 100W Power Handling - Peak: 300W Impedance: 4-Ohm Frequency Response: 40 - 23kHz Woofer Magnet Size: (D) 90mm x (D) 32mm x (H) 15mm Woofer Voice Coil: 25mm Tweeter Voice Coil: 20mm Xmax: 3.5mm Cone: Water-Repellent Treated Paper Cone Grilles Included: Yes Packaging Type: Giftbox Weight: 1.23kg