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 NV Series 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 
