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8W7AE Subwoofer:
Driver & Enclosure Specifications
Grille Clearance: 2.3125 in. (25 mm) from the bottom of the
mounting flange to the lowest inside surface of the grille.
Displacement: 0.06 cu. ft. (1.7 ltrs)
Net Weight: 17 lbs. (7.8 kg)
Mounting Hardware:
Twelve #8 x 1.00
long clear, zinc-plated
steel Phillips pan-head sheet metal screws (included) or twelve
#8-32 long steel Phillips pan-head machine screws with
#8-32 T-Nuts, each at least 1/2-inch (12.5 mm) longer than the
thickness of the mounting baffle (not included).
Unpacking/Mounting: Please refer to the “W7 Installation:
Mounting System sheet for detailed, step-by-step instructions.
PORTED ENCLOSURE:
Recommended Net Volume: 1.0 cu. ft. (28.3 ltrs.)
Recommended Port Tuning: 36.8 Hz
Port Type: “Slot ports are recommended. See information above.
The port recommendations listed above are derived through actual tests and
measurements (not computer simulations).
Front Baffle Thickness: 0.75 in. (19 mm)
Wall Thickness: 0.75 in. (19 mm)
Net volumes given below do not include the air volume displaced by the speaker
(Driver Displacement). This value must be added to the net volume along with the
displacement of any braces and/or ports (if applicable) to arrive at a gross internal
volume. Air inside a port is not part of the effective net volume. Calculate ports as
solid, not hollow objects.
The dimensions given for the enclosure examples below take all applicable
displacements into consideration.
SEALED ENCLOSURE:
Recommended Net Volume: 0.875 cu. ft. (24.8 ltrs.)
Fc: 45.9 Hz F3: 41.3 Hz Qtc: 0.798
Front Baffle Thickness: 0.75 in. (19 mm)
Wall Thickness: 0.75 in. (19 mm)
Overall
Depth
8.32 in.
(211 mm)
Mounting
Depth
6.83 in.
(173 mm)
Overall
Diameter
8.5 in.
(216 mm)
Bolt Hole
Circle
7.39 in.
(188 mm)
12 Holes
Magnet
Diameter
5.79 in.
(147 mm)
Mounting
Hole
Diameter
6.94 in.
(176 mm)
External Width
12.875 in.
(327 mm)
External Height
12.875 in.
(327 mm)
External Depth
14.0 in.
(356 mm)
External Width
18.75 in.
(476 mm)
External Height
12.875 in.
(327 mm)
Slot Height
11.375 in.
(289 mm)
External Depth
14.0 in.
(356 mm)
Extension Length
13.1875 in.
(335 mm)
Slot Width
1.375 in.
(35 mm)
Slot Port Depth
27.875 in.
(708 mm)
Slot Width
1.375 in.
(35 mm)
SAFETY NOTICE!
It is absolutely essential that the completed subwoofer enclosure
is mounted firmly to the vehicle with heavy steel bolts (1/2 inch
diameter) and large steel washers on both sides of the bolts. This
will reduce the likelihood of occupant injury in the event of a
collision or sudden deceleration.
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