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During box construction, temporarily assemble the box to make sure all pieces line up properly.
Then assemble all pieces before cutting out the holes for the woofers. Once the box is fully
assembled, connect an oscillator/amplifier to the woofer, sweep it through 20-100 Hz, and listen
for strange air whistling noises, buzzes, and rattles. Since the box will eventually be mounted in
a car it should be firmly fastened down. Simple 'I" shaped brackets work well.
BASIC MATH CALCULATIONS
To build a subwoofer box some very basic math calculations must be made accurately
referencing the formulas and drawings below:
Speaker parameters and box calculations often need some kind of math conversions in order to
make the numbers easy to work with. Some common conversions are listed below:
VOLUME AND AREA CONVERSIONS
TO CONVERT FROM:
Inches
Meters
Square inches
Square feet
Cubic inches
Cubic feet
Liters
MULTIPLY BY:
39.37
0.007
144
0 00058
0.035
c d -
TO GET:
Meters
Inches
Square feet
Square inches
Cubic feet
Cubic inches
Cubic feet
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