Meyer Sound DS-4P - Manual (Page 7)

7
Two types of rigging hardware are
available to fly the DS-4P loudspeaker
system: Aircraft pan fittings and the
optional L-Track system. Additionally,
weather protective treatment is available
for the DS-4P. With the exception of the
optional rain hood, all rigging hardware
is installed and tested exclusively at
Meyer Sound Laboratories. The DS-4P is
available with aircraft pan fittings only,
L-Track only, or with both aircraft pan
fittings and L-Track rigging hardware.
A IRCRAFT P AN F ITTINGS
The DS-4P with only aircraft pan fittings
weighs 163 lbs (74 kg), or 169 lbs (77
kg) when carpeted. The maximum
recommended load for a single cabinet
with these fittings is 600 lbs (273 kg).
This working load is based on a 5:1
safety factor. The DS-4P has six rigging
fittings (three on top and bottom). Each
fitting is capable of supporting the full
working load of the cabinet.
There are four types of interchangeable
rigging fittings, each fastened by six
Phillips screws:
• aircraft pan fittings (ring and stud)
• 3/8”-16 nut plates
• M-10 x 1.5 metric nut plates
• blank plates (if no rigging fittings are
requested)
NOTE: Units with nut plates are rated for
the weight of one cabinet only.
Rigging load ratings assume a straight
tensile pull and that the cabinet is in
new condition with aircraft pan fittings.
If these conditions are not met, the load
ratings can be reduced significantly.
Load ratings can also be reduced by age,
wear, and damage. It is important to
inspect the rigging hardware regularly
and replace worn or damaged
components immediately.
T HE DS-4P WITH O PTIONAL L-T RACK
R
IGGING
S
YSTEM
The DS-4P equipped with the L-Track
rigging system weighs 182 lbs (83 kg).
The carpeted version of a DS-4P with L-
Track weighs 188 lbs (86 kg). The
maximum recommended load for an L-
Track-equipped DS-4P at vertical pull
using any 2 points is 1500 lbs (682
kg). We strongly recommed using all
four rigging points per end. This working
load is based on a 5:1 safety factor
1 .
L-Track provides eight rigging points
(four on the top and bottom end of
each cabinet); the maximum working
load of each individual point is
dependent on the direction in which the
cabinet is being pulled at each
particular point. Figure 1 on the
following page shows the working loads
for each point as they vary depending
on cabinet pull angle.
When flying the DS-4P using
the L-Track system, it is
absolutely imperative that you
do not exceed either the
maximum recommended
working load for an entire
cabinet or the working load of
any individual rigging point.
All working load limit ratings assume
the cabinet, fittings, and L-Track are in
new condition. If not, the load ratings
can be reduced significantly. It is
important to inspect the rigging
hardware regularly and replace worn or
damaged components immediately.
RIGGING
!
!
1. Depending upon your geographic location a different safety factor may be required. All
Meyer Sound products must be used in accordance with local, state, federal, and industry
regulations. It is the owner’s and/or user’s responsibility to adhere to local regulations and
evaluate the reliability of any rigging method for their application. Rigging should be done
only by experienced professionals.
2. Results from tests of the L-Track rigging system using the New Haven Part #NH47556-12.