Remember: measure once, cut once
It sounds basic
but it’s easier to double check a measurement than to cut a
new piece of wood
It is very
important when building a subwoofer or speaker enclosures
that proper materials and techniques are used in the
Due to its favorable characteristics.75”mdf
(Medium Density Fiberboard) should be used whenever
possible. Particle board, chip board and/or plywood are not
suitable materials for enclosure construction.
Once your board
is cut into the correct size/shape pieces, air-nail or screw
the box together. Be sure to always use a quality wood
glue in the seams, as it will prevent enclosure damage or
After the box is assembled
,seal the inside seams
using %100 silicone sealant (even in ported and band pass
enclosures). For ports, make sure to round off the inside
edge of the top of the port and both edges at the bottom.
reduce port noise, this applies to both round and slot ports.
In larger enclosures, internal bracing should be used to
help cut down on flexing and resonance. In the minimum
recommended box size adding dampening material such as Dacron or
fiberfill (1 pound per 3ft) will help” trick” the woofer into
thinking it is a slightly (approx.10%) larger enclosure.
For extremely odd shapes, fiberglass mat
may be used to contour your enclosure to a custom shape.
When constructing a fiberglass enclosure you should use as much MDF as possible and fill the spaces with fiberglass.(fig-1)
Fiberglass mat has a higher resonance than MDF and can cause
the enclosure to sound ”tinty”, spraying sound dampening
material on the
inside surface of the fiberglass walls, as it will help lower is
POINTS TO REMEMBER:
Screw or air-nail together
Use generous amount of wood glue
Seal all internal seams with silicone
Internally brace all moderate size
Radius port edges-ID for the top, ID&OD
for the bottom
Sound dampen all fiberglass walls