The correct amount of sound absorbent material (fiberglass) comes in the cabinet. This should be left in and NO
more material should be added.
The MDF cabinet is designed to be installed in between two 2x4’s mounted on 16” centers. If 24” centers are used,
add a 2x4 to make a 16” center wall.
No matter what, the front of the MDF cabinet MUST be flush with the front of the wood 2x4’s.
The cabinet is only 46 high so we suggest mounting a 2x4 cap vertically above the location of the cabinet. This will
allow you can secure the cabinet on the bottom, sides and top. You may want to add a 2x4 under the enclosure as
well to get it higher off the floor, depending on the finish base to be used. Check with the home owner or contractor.
Make sure that all electrical wire is run above the cabinet cavity and no holes are drilled in the cabinet. Also, make
sure ALL wire and cable located in the same wall (not just the same wall stud bay) as the subwoofer are secured to
prevent a buzz or rattle from vibration.
This subwoofer will produce a LOT of vibration to which some will transfer to the wall. This can cause the MDF
cabinet to rattle and or even come loose from the wall. To prevent this, we strongly suggest that the drywall is
screwed and GLUED to the studs on both sides of the MDF enclosure and also the studs on both sides of that. We
also suggest that the drywall is glued to the front and back of the actual enclosure. Use a construction adhesive and
make sure to follow the instruction of the adhesive.
Choosing the Location
Choosing the location for the in-wall subwoofer is very important. Because these subwoofers mount into the wall,
they can not be moved once they have been installed. A good “rule of thumb” is the most efficient transmission of
bass frequencies is accomplished when the subwoofer is located in the wall, close to a corner. This will create good
reflective bass waves into the room. It can however also create a “boomy” sound that can be too much bass. This can
be somewhat adjusted with the subwoofer “frequency control” and the “level control” on the amplifier. Make sure to
consider all this before deciding on the final location
Some mounting location suggestions are:
• Locating one subwoofer in the front of the room and one in the back.
• Locating both subwoofers in the same wall. Each unit should be mounted about 1/3 way toward
the middle of the wall.
• Locate one subwoofer in one wall and the other in the opposite wall (facing each other).
Installing the in-wall MDF Enclosure
PLEASE NOTE: This MDF cabinet and subwoofer MUST be firmly secured to the wall. This
model produces a LOT of bass and will rattle the walls if not installed properly!
Carefully remove the MDF enclosure from the packaging. Note: there is a bag of 30, 2 1/2” wood screws. Make sure
these aren’t thrown away with the box.
Finalize the location of the subwoofer (which should have been determined already).
Cut the one piece of 2x4 which will fit in between the two studs. This is the piece that mounts above the MDF
cabinet. You may need to cut additional 2x4 pieces in order to get the MDF cabinet higher off the ground.
Now make sure the two studs that will be on both sides of the MDF cabinet are straight and not crooked one way or
another.
Place the MDF cabinet into the wall cavity and put in a few screws so it stays in place. Check to see how the cabinet
fits into the wall. Make sure it sits flush with the edge of the studs.
Proceed to put the rest of the screws through the studs into MDF cabinet. Try to center the screws in the middle of
the studs. Be careful not to over-tighten or strips the screws.
Do not put any screws in that will interfere with the opening of the cabinet for the subwoofer. Put the screws above
and below the opening in the MDF cabinet.
