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ENCLOSURE CONSTRUCTION
All enclosures should be constructed from 18mm (3/4”) Medium Density Fibre board.
Enclosures should be glued and screwed, because MDF is porous. FUSION recommends
sealing the internal sides with a polyurethane sealer prior to installation. To accurately cut the
subwoofer hole use the unique FUSION ruler guide included inside the FUSION Subwoofer
packaging
ENCLOSURE PLACEMENT
An important factor is to place the subwoofer enclosure as far back in the vehicle as possible,
so that the natural bass gain of the vehicle is utilised. If your vehicle is a hatch back, always
experiment with which direction the subwoofer is facing. Facing the subwoofer towards the rear
of the car, should enhance the low down bass that PowerPlant Subwoofers are designed to
produce.
ENCLOSURE TUNING
When tuning the system it is always a good idea to try running the subwoofer out of phase
(which means switching the speaker wires around) with your other speakers. Do this and listen
to the system to see if the perception of bass is more from the subwoofer location or the front
speaker location. Which ever way gives the better perception that the bass is coming from the
front speakers, would quite safely guarantee the subwoofer is wired correctly.
CALCULATING ENCLOSURE ‘BOX’ VOLUME
Cuft:
To calculate Cuft multiply the height (A), width (B), depth (C) in inches, then divide that number
by 1728.
Example: 10" high x 18" wide x 12" deep = 2160 inches³
Divide 2160/1728 = 1.25 ft³
Litres:
To calculate Litres, multiply the height (A), width (B), depth (C) in centimetres, then divide that
number by 1000.
Example: 25.4cm high x 45.72cm wide x 30.48cm deep = 3539cm³
Divide 35396/1000 = 35.39 litres
A
B
C