[. . . ] (liter) -3dB Point (Hz) Enclosure Damping Height -inch (cm) Width -inch (cm) Depth -inch (cm) 1. 25 (35. 40) 40 0. 81 14 (35. 56) 24 (60. 96) 10 (25. 40) 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) 2. 0 (56. 63) 28 32 13. 5 (34. 29) 16. 5 (41. 91) 23 (58. 42) 4 x 13. 2 (10. 16x33. 53) 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. 11-1/32''DIA [. . . ] Proper enclosure design is one of the key components to subwoofer performance and should be handled by experienced installers. [. . . ]