Step 4Brace the Back
iImage Information

This design relies on four brackets to hold the entire baffle against the door trim, so it must be relatively stiff. To do this, 2 x 4 studs run 66.5" lengthwise down the middle and just outside of each column of woofers. 28" lengths run sideways at the ends of these with another 28" length 1.75" away from the first. This 1.75" channel will easily accommodate the mounting bracket 2 x 6 and keep them from spinning when tightening. In between the long spanners are short sections bracing directly around the large woofers. Everything is screwed in place with 3" multi-purpose screws.