[. . . ] (liter) -3dB Point (Hz) Enclosure Damping Height -inch (cm) Width -inch (cm) Depth -inch (cm) 0. 5 (14. 16) 45 0. 76 14 (35. 56) 23 (58. 42) 5 (12. 70) Vb F3 Fb H W D P Ported Enclosure Recommendation Internal Area cu. [. . . ] (liter) -3dB Point (Hz) Tuning Frequency (Hz) Height -inch (cm) Width -inch (cm) Depth -inch (cm) Port Diameter and Length -inch (cm) 0. 5 (14. 16) 36 40 14 (35. 56) 23 (58. 42) 5 (12. 70) 2 x 9 (5. 08x 22. 86) NOTE: Internal volume is measured before speaker and/or port displacement. External dimensions are based on the use of 3/4" (1. 9cm) material. Proper enclosure design is one of the key components to subwoofer performance and should be handled by experienced installers. Please contact your authorized Clarion dealer for the best results. 8-29/32''DIA [. . . ] Proper enclosure design is one of the key components to subwoofer performance and should be handled by experienced installers. [. . . ]