Skar Audio SK3X12V Triple 12" Ported Universal Fit Subwoofer Box . Subwoofer Size: 12-Inch; Number of Chambers: 3; Port Type: Slot Ports (Bottom) Fit Type: Universal / Rear-firing Andled Design; Wood Type: 5/8" MDF; Total Gross Box Volume: 5.25 ft^3; Volume per Chamber: 1.75 ft^3; Dimensions: 38.50" W x 18" D x 16.50" H; Subwoofer Hole Cut-out You simply measure the height, width and depth (in inches), multiply them together and then divide that number by 1728. If the box has internal measurements of 6" high*18" wide*12" deep then the volume of the box is 1296/1728=.75 ft^3. The diagram below shows how you would measure the dimensions of the box. QPower QSBASS12 12" Vented Single Subwoofer Enclosure. (1) $52.99 New. $25.00 Used. QPower QBOMB12VL Car Enclosure Single Speaker. (49) $84.99 New. $78.56 Used. Q Power BASS124HOLET 12 inch Sealed Divided Speaker Box - Gray. Aug 18, 2022 - Explore Ben Ben's board "12 inch subwoofer box" on Pinterest. See more ideas about subwoofer box, subwoofer, 12 inch subwoofer box. Description. Skar Audio engineered this custom, vehicle specific, dual 12-inch, sealed subwoofer enclosure specifically to fit under the rear cab seat of 2007-2013 Chevy Silverado/GMC Sierra Extended Cab trucks. Unmatched by anything else on the market today, this subwoofer enclosure was engineered from the ground up by our master craftsman to Dual 10" Ported Subwoofer Enclosure. 114 Reviews. In Stock. MSRP: $219.99. Price: 139.99. HOLIDAY SALE PRICE: $118.99. Buy in monthly payments with Affirm on orders over $50. Learn more. So, if the sub has a 10-inch port, you can place it 10-20 inches away from a surface. How Wide Is A 12-Inch Subwoofer? A 12-inch subwoofer refers to the measurement of the external diameter of the circular metal frame in front of the speaker. It will require a subwoofer box of approximately 23.63” width, 13.78” height, and 16.42” depth. Let's say our 12-inch \small 12\text{-inch} 12-inch speaker driver's displacement volume is around 0.128 cubic feet \small 0.128\ \text{cubic feet} 0.128 cubic feet. Let's also say we wish to include two cylindrical tube ports that take up a total of 0.15 cubic feet \small 0.15\ \text{cubic feet} 0.15 cubic feet of volume in the box. 1. Ø285mm Ø285mm 36.00" 32.44" 16.74" 15.24" 16.74" 15.24" 17.50" 16.00" Top Top Bottom Bottom Rear Front Left Right Rear Front Left Right subbox.pro Open in Editor. 12 inch subwoofer box design Rockford Fosgate P2 12 Final BLU95, ported box plan, 3D model. Net internal volume 3.60 cubic feet, port area 45.00 square inches, tuning frequency Enclosure's design makes for an ideal spot for loud bass playing; Equipped with a tuning frequency of 53 hertz, offering a competitive quality against a bigger dual 12-inch subwoofer Equipped with a mounting depth of 11 1/4";QPower values cars with premium music; Measures 8 inches with a mounting depth of 11.25 inches; Color black design BG3lM.