INSTALLATION
VIBE recommends that the BLACKDEATH subwoofer is only installed in a ported enclosure.
PORTED ENCLOSURE INSTALLATION
A ported or vented enclosure is not much more complex than a sealed design, It consists of a box
with a hole in it. The vented enclosure has to be correctly designed in order to function correctly,
the vent in the enclosure interacts with the air in the cabinet and the woofer to increase output and
reduce cone excursion at and around the tuning frequency.
At the tuning frequency of the enclosure almost all of the bass is being produced by the vent, not the
woofer. It is more dif
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ff cult to achieve good performance as the enclosure volume and port volume
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are critical but the results are worth it as the ported box is up to 3 times as loud as the same woofer
in a sealed box, it is also possible with the correct tuning to add a “bump” in the response of the
enclosure to boost bass at a preferred frequency. Vented enclosures are best suited to dance, R&B,
electronically produced music, and high SPL applications.
ENCLOSURE CONSTRUCTION
Use at least 1 inch MDF (medium density
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breboard) or Birch ply to construct your enclosure and at
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least two inches is recommended for the baf
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ff e. It is recommend that the panels are glued, screwed
À
and braced with sections of the same material you have used to build the enclosure from, the
BLACKDEATH woofer is capable of producing internal pressures that can literally blow apart badly
made enclosures, great care needs to be taken with the construction and bracing of your enclosure
It is also worth sealing the joints with a Silicone sealer once the glue has dried to make a perfect
airtight seal.
NOTE- Do not screw the Subwoofer into the enclosure within 24 hours of applying silicone
sealer to the joints, the gasses given off as the silicone cures can perish the surround of the
Subwoofer causing a non warranty failure.
ENCLOSURE VOLUME
To work out the volume required for your enclosure please refer to recommended enclosure volumes
speci
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ed for your Subwoofer, these are listed in cubic feet, to convert cubic feet to litres multiply the
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cubic feet by 28.3 If you use this formula calculating your enclosure size will be easy 1 cubic foot is
expressed as 12” x 12” x 12” = 1728 cubic inches
If we require a volume of 2.5cuft then we multiply this by 1728 2.5 x 1728 = 4320 cubic inches
We now take 2 known enclosure dimensions that we will use (e.g. height and width) and divide this
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gure by them which will give us the depth, for example our height is 15”, our width is 20”
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BlackDeath 15 SPL ‘Bubonic’ Subwoofer
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Summary of Contents for BlackDeath 15 SPL
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