Features Edge-enhanced steel frame for added structural strength. Black anodized voice coil former for superior heat dissipation. Linear double-roll surround for precision cone movement. Complex FEA-designed high-efficiency motor. Rigid poly mica-coated cone for optimized sound reproduction. Rear dampened hybrid silk dome tweeter for extended frequency response. Concentric point source design for a seamless transition from midrange to tweeter. Sonic diffuser and radiant collar for better off-axis frequency response. High-quality mounting hardware included. DescriptionGet ready for an unparalleled audio journey with AudioControl's PNW Series 5.25” High-Fidelity Coaxial Speakers! Elevate your music game by combining these speakers with AudioControl's legendary amplifiers. Featuring an edge-enhanced steel frame, black anodized voice coil former, and linear double-roll surround, the PNW line optimizes sound reproduction like no other. And that's not all - the rigid poly mica-coated cone adds depth to your audio experience. Worried about installation? No need to be! This speaker set comes with high-quality mounting hardware. Plus, with the tweeter's point source design, both drivers align perfectly for better speaker alignment and impressive sound quality.WHAT'S IN THE BOX (2) 5.25” High-Fidelity Coaxial Speakers User Guide Mounting Diagram SPECIFICATIONSAudio Crossover Type Butterworth DC Resistance (Re) 2.6 ohms Filter Type HP System Frequency (Fs) Response 75-20k Hz XO Frequency 5250 Hz Slope (Octave) -6 dB Tweeter Voice Coil Diameter 20 mm Midrange Voice Coil Diameter 35 mm Dimensions Overall Diameter (w/o Grille 5.23 in/ 133 mm Cut Out Diameter 3.60 in/ 91.5 mm Mounting Depth 1.66 in/ 42.2 mm Height (w/o Grille) 0.16 in / 4.1 mm Height (w/ Grille) 0.64 in / 16.5 mm