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Section 8. - SYSTEM TRANSPORT AND TRUCK-PACK
INFORMATION
The HLA system is a global product. It is in use on nearly every continent, and is transported in a wide
variety of ways including trucks, railroad cars, sea containers and air cargo modules. While the new product is
often received packaged on a pallet for ease of handling, system users will develop their own unique ways of
transporting HLA systems based on available transportation modes.
Each speaker rides on four wheels that are attached two to each side on the bottom. Wheel dollies add
20 pounds (9 kg) to the weight of the speaker. Wheel dollies are two heavy-duty castors attached to a 34-inch (86
cm) L-shaped aluminum bar. Each Wheel dolly slides into a track on one side of the speaker's bottom, from the
back. Wheel dollies slide in at the same angle as the speaker's side, so they must be removed or attached one at a
time, sliding into the track from the back of the speaker. If the speakers are rolled backwards, the wheel dollies
won't slide out.
The wheels at the front are 28 inches (71 cm) apart. Ramps that are 30 inches (76 cm) or wider can
be negotiated. It is easier to maneuver the speakers by pushing on the front, with the back away from you. HLA
speakers can be lifted by as few as two able-bodied loaders or stage-hands. The aluminum struts on the sides of
the 4895 frame offer convenient handles. Care should be taken to not lift the speakers facing upwards with the
wheels on them, as they will want to slide out.
HLA speakers are 52 inches (132 cm) high. Wheel Bars add 4 inches (10 cm) to the height and HLA
speakers on their wheel bars are 56 inches high. HLA speakers can travel stacked two-high on one set of wheels
with clearance of more than 108 inches (9 feet) (2.75 m) through doorways and in trucks. Door widths of less
than 34 inches (86 cm) can prove impassable.
Truck box and trailer widths
Straight Trucks (smaller 'bobtail trucks' such as are often obtained from rental agencies) typically
have 92 to 95 inches of internal width. Fleet rental trucks are usually equipped with slats or track on the side
walls for load restraint, offering as little as 92 inches of internal width. Lighter-weight one-way or moving type
vans will usually only have light-duty load restraint rings on the walls but offer up to 95 inches of width.
HLA speakers can pack in a 95-inch wide truck body with an alternating row along one wall and
alternating pairs in rows of two at 90 degrees in the remaining space. HLA units pack better in a 91-inch width
truck body with tight-packed rows of three speakers. Straight trucks can be loaded with wheels remaining on the
speakers. Smaller rental straight trucks usually have less than the 105-inch minimum height required to double-
stack, even without wheels attached. A top layer of speakers can be placed on their face with several inches of
ceiling clearance. Placing them on their face keeps their wheels from falling out and keeps their waveguides in
the forward position. Carpeted plywood is recommended to minimize wear to the grilles when speakers ride
horizontally on top. One speaker can ride face-down on top of two dove-tailed speakers on their wheels. In this
manner 16-18 speakers can occupy only 12 feet of truck space.
Typical 45-ft. (13.7 m) rental trailers used in the UK and Europe have a maximum box width of 8 ft.
(2.4m, 96"), with an interior height from the main deck to roof of 9 ft., 8 in. (2.9 m, 116").
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