I used 1 1/8" MDF for the front of the cabinet
and 3/4" MDF for the rest of the enclosure. The front has insets
for the drivers (so they are flush mounted) and the rear of the
driver holes is routed down to minimize early reflections. In addition,
the top and bottom are rabbeted ( 1/4" ) so that the sides
have additional support. The entire loudspeaker is assembled with
just glue (I use Titebond 2) using butt joints and rabbets.
Here's a picture of the glue up process. It uses 16
The glue up - click the image for
a larger view
Here's a view of the panels (press any image for a
The inside shelf, the top (or bottom)
showing the rabbet and the front.
The side with port holes and the
rear with hole for posts. The other side is blank.
Here's a closeup of the front of the enclosure showing
the inset (front) and the routed area with screw keepers.