[. . . ] The user-friendly units also offer neat and flexible setup for your car. [. . . ] ✹Pure Sound from Hemp-Fiber Cone and Dustcap Eco-friendly Hemp-Fiber reduces unwanted mid and high frequencies in subwoofers – like a natural low filter. Internal Loss is reduced within the speaker diaphragm for pure fidelity sound. ✹Easy Installation Rapid Fire Impedance Selector Terminal - Changes the voice coil impedance with one easy motion. Switch between Parallel, Series, or Bi-Amp configurations without any additional wiring. Power RMS Power Sensitivity Frequency Response Impedance Fs Qts Vas Magnet Mass Hole Cutout Diameter Mounting Depth 10” (25 cm) 3000W 1000W 83dB 23 - 500Hz 4Ω + 4Ω 39. 5Hz 0. 957 0. 69 ft3 75. 52 oz Dia. 9 6/32” (233 mm) 6 28/32” (175 mm) CD-1635 12” (30 cm) 3000W 1000W 86dB 20 - 500Hz 4Ω + 4Ω 35. 5Hz 0. 73 1. 63 ft3 103. 24 oz Dia. 10 29/32” (277 mm) 7 23/32” (195. 8 mm) S m] h OLE 7 m nc 4 3 i m] H h [2 /2 . [. . . ] 10 29/32” (277 mm) 7 23/32” (195. 8 mm) S m] h OLE 7 m nc 4 3 i m] H h [2 /2 . [. . . ]