BUILDING YOUR ENCLOSURE
Your enclosure should be made of 3/4" wood, minimum. Avoid low density material such
as common particle board and low grades of plywood. The recommended materials are
MDF (medium density fiberboard), high density particle board or high quality void free 7 to
13 ply plywood such as marine plywood.
When assembling the box use a good grade of wood glue (such as Elmer’s Professional
or Titebond) on all joints. Do not use silicone, hot glue or caulk in place of glue. When the
glue has set, seal all the inside joints with a liberal application of silicone sealer. This is
important to ensure an airtight seal.
The use of terminal cups is the preferred means for getting wires to the woofer. If cups
are not available drill a hole slightly larger than the wire used and carefully seal around the
wire with silicone sealer. This is also very important to maintain a perfect seal in the box.
All the recommended enclosure specs require a 50% fill of polyester fiber. Commonly called
fiberfill, it is normally used as pillow stuffing.
If the woofer mounting hole is not cut exactly to specifications there is a good chance
that air can leak out through the screw holes. To remedy this problem you can use a non-
hardening sealer such as rope caulk or plumber’s putty.
DO NOT USE SILICONE PRODUCTS TO SEAL THE WOOFER TO THE ENCLOSURE AS THIS WILL
VOID YOUR WARRANTY.
Be sure to observe polarity when wiring up any speakers. Incorrect polarity will cause a
loss of sound quality and in the case of woofers it can decrease output dramatically.
RECOMMENDED ENCLOSURE VOLUMES
XPL™ C-Series Drivers
Model
Box Volume (cubic feet/liters)
X15c
1.8/50.9 Minimum
2.7/76.4 Maximum
X12c
1.0/28.3 Minimum
1.5/42.5 Maximum
X10c
0.8/22.6 Minimum
1.2/34.0 Maximum
