|| Site Under Development ||
of the Subwoofer Box
· 4' x 8' sheet
of ¾" MDF
· Two pieces of Plexiglass, ½" x 15" x 9"
· 4' x 8' sheet of ¼" MDF
· 6 tubes of Liquid Nails construction adhesive
· 1 tube of clear silicon caulk
· About 200 1 ¼" drywall screws
· Two linear yards of vinyl upholstery
· 2' x 4' sheet of 1/8" MDF
· Two cans of 3M aerosol adhesive
· 20 beige screw covers
· Four 12" Alpine Type-R Subwoofers
· Two 15" neon tube lamps
· 15' of 10 gauge wire
· One SPDT 12 Volt Relay
· 7 ½"
· Electric drill
· Drill bits of various sizes
· Phillips screwdriver
· Caulk gun
· Tape measure/Ruler
| Design criteria: The
box must accomodate four subwoofers, and each subwoofer needs 1 cubic
foot of air. Dimensions must be less than 15 inches high, 38 inches
wide, and 28 inches deep. The back must be slanted to fit snugly behind
the rear seats.
|Each chamber houses two
subwoofers, and will have a volume of 2 cubic feet. Design considerations
would not allow for each subwoofer to have its own chamber (due to
the dimsensions of the mounting surface: the base piece).
|The cutouts for the subwoofers
are made using a jigsaw, and the interior is spray-painted flat gray.
The paint looks bad in this picture because it is still wet in some
|This is the box with the
countersunk plexiglass frames installed. Half inch plexiglass will
be used, so a 1/4 inch 'washer' is made and installed so that the
plexiglass will be even with the 3/4 inch MDF on the outer surface.
|The top is installed,
and T-nuts will be used to mount the drivers.
|The plexiglass has been
installed along with the four 12" Alpine Type-R drivers, and
the MTX 225HO amplifier. 10 guage speaker wire was used. The thin
wires are for the two 15" neon tube light which are inside of
|The four subwoofers
can be seen through the plexiglass. The plexiglass plates are screwed
in and caulked with clear silicone caulk.
cut out of 1/4" MDF, which received beige vinyl upholstery that
matches the interior of the SUV. These took 4 hours to measure and
cut out correctly. The vinyl was attached using 3M aerosol adhesive
| Here is the finished product.
You are looking at about 45 hours of work. The whole thing contains about
200 drywall screws, 6 tubes of liquid nails, and weighs around 140 pounds.
It is extremely loud as well (much louder than the landcruiser), and there
are almost no audible vibrations of the vehicle (very clear bass). I designed
and constructed every part of this, so I am very glad that it sounds good!