4th Order Bandpass Build for Colby P. from New Mexico For this build, we chose 13-ply 3/4" Baltic Birch instead of MDF. This added significant strength for only a minimal weight penalty. Here is one method used for accurate cross-cuts. Building the outside walls of the sealed chamber. 13 plies, count them. Laying out the baffle position. Test fitting the baffles. Recessed subwoofer mounting holes. This allows approximately 1-1/8" of baffle, or about 15 plies. Installing the port sides. First top-plate installed, with access panel hole. Note the roundover on the vent to help create a flared opening. Close-up of seams, and recessed subwoofer holes. Aluminum tape applied to the second top-plate to help seal the opening. Closed-cell foam applied as a gasket. More aluminum tape and CCF on the inner top-plate. Subwoofer enclosure with removable top in place. Final delivery: roundover applied to corners, box shipped ready for sanding and paint. |
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