JL Audio Portable Speaker Mobile Subwoofer User Manual

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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: 32 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: 46.0 Hz F3: 41.3 Hz Qtc: 0.797
Front Baffle Thickness: 0.75 in. (19 mm)
Wall Thickness: 0.75 in. (19 mm)
Driver Specifications
Enclosure Specifications
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
14.0 in.
(356 mm)
External Height
11.875 in.
(302 mm)
External Depth
14.0 in.
(356 mm)
External Width
27.0 in.
(686 mm)
External Height
10.0 in.
(254 mm)
Slot Height
8.5 in.
(216 mm)
External Depth
12.0 in.
(305 mm)
Extension Length
13.25 in.
(337 mm)
Slot Width
1.5 in.
(38 mm)
Slot Length
26.0 in.
(572 mm)
Slot Width
1.5 in.
(38 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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