
PM3.M POLE MOUNT BRACKET
INSTALLATION GUIDE V 2.00
The One Systems PM3.M pole mount system is an easy to install and flexible system that allows
specific One Systems loudspeaker models to be mounted to pole structures. The only products
approved for use with the PM3.M are: 108.HTC, 108.HSB, 108.HTH and 208.HTC."
NO OTHER LOUDSPEAKERS SHOULD BE SUBSTITUTED!
The following actions MUST be performed PRIOR to beginning the installation of the PM3.M:"
#"
1. This installation guide must be completely read and understood!"
2. The installation manual “Rigging and Suspension of One Systems Products” must be read
and understood. This guide can be found at www.onesystems.com."
3. The structure of the mating surface MUST be capable of supporting the combined weight
of the pole mount bracket, the loudspeaker, and all associated rigging and cabling.
The mounting structure must satisfy the required safety factors specified by local and national
codes, as well as safe rigging practices. The PM3.M weighs 4.16 kg / 9.2 lb. "
4. The PM3.M pole mount bracket should only be installed by someone experienced in the
overhead suspension of items. They should be familiar with applicable local / national codes
governing the installation of these types of products and those governing the attachment of these
types of products to specific pole structures."
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5. Heed all safety warnings."
6. # As a backup to the main mount, we recommend the use of another PM3.M or other type
of secondary safety mount. "
NOTE: Caution should be exercised when connecting One Systems Marine-Grade speakers and
Marine-Grade rigging to other dissimilar metals. The potential for galvanic corrosion is high in
marine environments, where the One Systems Marine-Grade enclosures and rigging are specified
or required. Compatible metals and appropriate anode to cathode area ratios must be
maintained. A structural engineer with galvanic corrosion experience should be consulted prior to
installation of ANY One Systems products in marine environments. "
CAUTION: All structures outdoors are subjected to wind forces. These forces must be
considered when suspending any product outdoors. It is necessary to know the “Effective
Projected Area” (EPA) of the loudspeaker prior to installation of the loudspeaker and the PM3.M.
The effective areas are shown in Appendix 1. Periodic inspections of the rigging, loudspeaker
enclosure and installation are strongly recommended."
IMPORTANT NOTE: All products in direct weather installations can be subjected to high wind
speeds. The working load limit and safety factor ratings are provided for static vertical
(gravitational) loads only. For use in high wind areas, One Systems recommends consultation
with a licensed structural engineer to calculate an appropriately re-rated safety factor. For wind
speed exposure over 74 miles per hour (119.1 kilometers per hour, 64.3 knots) the loudspeaker
enclosure, bracket, banding and link assembly or secondary safety must be inspected for signs
of damage or fatigue!"
INSTALLATION
The PM3.M may be used on round or square poles. "
For square / rectangular poles, the minimum flat dimension must be 3.75 inches (95.25 mm) at
the speaker’s mounting height and for round poles, the minimum required diameter is 4 inches
(101.6 mm) at mounting height. The PM3.M was designed for use with the 108.HTC, 108.HSB,
108.HTH and 208.HTC only. NO SUBSTITUTIONS ARE ALLOWED!"
NOTE: One Systems does not imply suitability of specific pole diameters. Each pole must be
verified by the pole manufacturer or others, as to the structural suitability of the pole for use with
the total load of the PM3.M, the loudspeaker, as well as all required safety factors. "
THE PM3.M is designed for pole mounting ONLY! DO NOT wall mount the PM3.M. "
The PM3.M is shown below. The PM3.M allows a down tilt adjustment of up to 40 degrees in 8
degree increments. "
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The PM3.M consists of three parts: the pole bracket, the loudspeaker bracket and the
Link. The PM3.M pole bracket is shown below:
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Prior to mounting the pole bracket to the pole, the speaker mount section should be
removed. To remove the speaker mount section, remove the pan pivot bolt and pan aiming
bolt. See the figure below and refer to page 10 for the location of the pan pivot bolt and
pan aiming bolt.
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NOTE: There are three M8 forged shoulder eyebolts supplied with the PM3.M. Make sure
that two of them are mounted to the PM3.M back plate (pole bracket) as shown on page 3
BEFORE attempting to mount the PM3.M pole bracket assembly to a pole structure!"
NOTE: Instructions for mounting the Band-It bands and buckles are supplied by Band-It.
The PM3.M has three slots for mounting the pole bracket assembly on a pole. ALL THREE
slots MUST be used. Each slot MUST be DOUBLE WRAPPED (two independent bands per
slot!) using the specified Band-It straps ONLY! DO NOT substitute any other straps. IT IS
NECESSARY TO USE ALL MOUNTING SLOTS TO INSURE A SAFE AND SECURE MATE TO
THE ASSOCIATED SURFACE!"
IMPORTANT: It is REQUIRED that each of the three band slots be wrapped TWICE (TWO
INDEPENDENT SINGLE WRAPS PER SLOT). This should not be confused with “double
wrapping”, which is two wraps of banding through a single buckle. This means that a total of
6 bands and 6 buckles are required for a single PM3.M bracket. Two independent single
wraps per slot will ensure a strong and secure mounting of the bracket to the pole. Insure
that the two buckles are separated from each other in each slot! The image below illustrates
the double wrapping required for each of the three slots."
Note the TWO
independent bands
and buckles per slot

IT IS CRITICAL THAT THE MATING SURFACE (Pole) BE CAPABLE OF SUPPORTING THE
LOAD OF THE PM3.M BRACKET, THE LOUDSPEAKER AND ALL SUSPENSION
HARDWARE, AS WELL AS PROVIDING THE PROPER SAFETY FACTORS. DO NOT
ATTEMPT TO SUSPEND THE BRACKET AND LOUDSPEAKER UNTIL THE STRUCTURAL
CHARACTERISTICS OF THE MATING SURFACE (Pole) ARE UNDERSTOOD. DO NOT
INSTALL THE POLE MOUNT BRACKET AND LOUDSPEAKER IF THE MATING SURFACE
(Pole) IS NOT CAPABLE OF SUPPORTING THE ENTIRE ASSEMBLY’S WEIGHT, AS WELL
AS PROVIDING THE REQUIRED SAFETY FACTORS!"
IMPORTANT: There are 3 slots indicated by the red arrows in the image below. Each of the
3 slots must be utilized to insure a secure mount to a pole. ALL 3 slots must use double
wrapped bands (Two independent bands wrapped in each slot)! The image below shows the
PM3.M mounted to a round pole. As shown, ALL three band slots must be used and all
locations MUST be double wrapped (two independent band assemblies per slot per the
image on the previous page of this manual!)
The red arrows indicate the 3 slots used to band the PM3.M to a pole structure
The PM3.M showing ALL three band locations being used
Mount the PM3.M bracket assembly to the pole at the desired height on the pole. The
bracket is mounted to the pole using BAND-IT stainless steel bands. DO NOT
SUBSTITUTE bands of other material or widths. There are 3 slot locations for the PM3.M
and ALL 3 of them MUST BE USED.
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The required materials are: "
#"
###BAND-IT # C206R9 stainless steel bands; "
###BAND-IT # C25699 buckles; "
###BAND-IT # C00169 tensioning tool."
The stainless steel band is Type 201SS 0.030 inches (0.762 mm) thick and 0.750 inches
(19 mm) wide. These banding materials should be used for “inland” environments.
NOTE: For oceanfront and marine environments, the only approved materials are:
###BAND-IT # C406R9 stainless steel bands (316 stainless steel)"
###BAND-IT # C45699 buckles; "
###BAND-IT # C00169 tensioning tool."
The stainless steel band is 316 grade stainless 0.030 inches (0.762 mm) thick and 0.750
inches (19 mm) wide."
WARNING: DO NOT substitute band materials or banding dimensions. Installation
instructions from BAND-IT should be precisely followed. Operating instructions are
supplied with the tensioning tool (All BAND-IT parts and tools must be purchased
separately. These parts and tools are not supplied by or available through One
Systems). The stainless steel banding material, buckles and tensioning tools are
available from the following locations (or through distributors recommended by these
business locations):"
#####BAND-IT IDEX, Inc. "
#####4799 Dahlia St. "
#####Denver, Colorado 80216 USA. "
#####1-800-525-0758"
#####FELIX PONCE "
### #Calle Ignacio Zaragonza No. 8 "
### #Colonia Ahuehuetes Atizapan 52953 "
#####Edo. de Mexico. "
#####(52) 555825 8502. "
#####BAND-IT Company Limited"
#####Speedwell Industrial Estate "
## ###Stavely, Nr. Chesterfield "
#####Derbyshire, S43 3PF England"
#####Home Sales (44) 1246-479479. "
#####Export Sales (44) 1246 479480. "
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# # # # BAND-IT Shanghai Sales Office "
####Wanbao International Business Center #207 "
######660 Xinhua Road "
#####Shanghai, China 200052. "
#####021-62826348-308"
#####BAND-IT Clamps (Asia) Pte Ltd. "
#####11 Second Chin Bee Road"
#####Singapore, 61877"
#####(65) 6265-8853"
Now the M8 forged shoulder eyebolt should be installed in the top rear of the loudspeaker
enclosure. Make certain that the eyebolt is seated on the enclosure’s surface. "
Note that the desired pan and tilt angles may be set either before or after the loudspeaker
is mounted to the PM3.M assembly. However, the pan and tilt angle adjustments must be
double checked and tightened after the loudspeaker has been mounted. "
Next, the loudspeaker should be mounted to the PM3.M speaker mount bracket using the
supplied M8 stainless steel bolts and internal tooth lock washers. DO NOT SUBSTITUTE
ANY PARTS."
BAND-IT Clamps (ASIA) Pte. Ltd.
11 Second Chin Bee Road
Singapore 618777
65-62658853
BAND-IT Shanghai Sales Office
207 room
Wanbao International Business Centre
660# Xinhua Road
Shanghai, China 200052
021-62826348-308
PM3.M Speaker mount bracket section
The PM3.M mounts to the bottom of the 108.HTC, 108.HSB, 108.HTH or 208.HTC using
the M8 locations on each respective speaker. The mounting locations are highlighted in red. "
NOTE: Remove all M8 cover plugs before installing the loudspeaker on the PM3.M’s
bracket plate!
DO NOT SUBSTITUTE MOUNTING LOCATIONS!
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PM3.M Mounting locations highlighted in red (bottom ONLY) for the 108.HTC, 108.HSB,
USE EXTREME CAUTION! The loudspeaker is heavy and it is likely that the desired mounting
location is high in the air. This process should never be attempted by a single person. "
TWO PEOPLE ARE REQUIRED TO MOUNT THE LOUDSPEAKER ENCLOSURE TO THE POLE
AND BRACKET. Safety harnesses should always be worn when working on an elevated
platform. The loudspeaker and loudspeaker section of the bracket may now be joined to the
pole section and the required pan and tilt angles selected. This is a two-person job and extreme
care should be exercised to avoid serious injury. "
The pan pivot bolt should be inserted first and secure but not completely tightened using the
nylon insert nuts supplied. The pan pivot is shown below in Figure 2d. Then the pan aiming bolt
should be inserted and nylon insert nuts applied. "
CAUTION: DO NOT REMOVE THE PAN PIVOT BOLT AFTER INSERTION!
Next, the pan angle may be adjusted by removing the pan aiming bolt and setting the desired
pan angle and then re-inserting the bolt. DO NOT REMOVE THE PAN PIVOT BOLT!
The tilt angle may be adjusted by removing the tilt aiming bolt and setting the desired angle. DO
NOT REMOVE THE TILT PIVOT BOLT!
After both the tilt and pan angles are set, make certain that all bolts are tight and secure.
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UNDER NO CIRCUMSTANCES SHOULD THE LOUDSPEAKER’S DOWN TILT EXCEED 40
DEGREES FROM VERTICAL FOR THE PM3.M!"
Now the Link must be installed."
INSTALLING THE PM3.M BRACKET WITHOUT THE LINK IS NOT ALLOWED!
The Link consists of stainless steel quick links, a stainless steel turnbuckle and several links of
stainless steel chain. The use of the chain pieces and quick links with the turnbuckle is based
on the tilt angle of the speaker. The turnbuckle should always be used. "
DO NOT SUBSTITUTE ANY PART OF THIS LINK ASSEMBLY!
The Link should be tightened by rotating the turnbuckle until there is VERY SLIGHT tension on
the Link assembly. DO NOT OVER-TIGHTEN. The purpose of the Link is to provide support for
the main Pole Mount System tilting bracket at the bottom of the assembly. "
WARNING: If the turnbuckle assembly is turned and the loudspeaker enclosure’s angle begins
to change (if the down tilt angle begins to move toward 0 degrees vertical) then the turnbuckle
has been OVER TIGHTENED. Turn the turnbuckle until there is VERY slight tension on the Link
assembly and the down tilt angle of the enclosure is set by the tilt bolts on the PM3.M.
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The back plate section of the PM3.M has two eyebolts attached to it. The figure below
illustrates the proper eyebolt to use for each down tilt angle of the bracket.
PM3.M EYEBOLT AIMING LOCATIONS
Be certain to use the appropriate combination of Link parts to insure proper connection
between the PM3.M and the specific One Systems speaker. The required combination of Link
parts is determined by the down tilt angle of the enclosure. "
The assembly may be configured with any combination of turnbuckle, chain link sections and
quick link in order to achieve the proper tension on the system, but the turnbuckle must
always be used. The figures below show a 108.HTH or 208.HTH and PM3.M at vertical, 24
degrees and 40 degrees using the eyebolt positions shown in the PM3.M BOLT AIMING
LOCATIONS shown above. Note that Figure 8a and 8b use the same Link and turnbuckle
combination but with different eyebolt locations; Figure 8c uses chain sections as well as the
quick links and the turnbuckle.
This image represents the Link assembly with the enclosure in a vertical orientation and the
Link using the lower eyebolt position.
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Figure 8B represents the Link with the speaker in a 24-degree tilt. The Link is using the top
eyebolt and the turnbuckle has been adjusted to provide VERY MILD tension.
Figure 8c represents the Link assembly with the enclosure in a 40-degree tilt. The Link
assembly uses the top eyebolt and the stainless steel chain has been added to achieve that
proper tension on the assembly. Notice the “dropped” chain links in Figure 8c.
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Warning: If the turnbuckle assembly is turned and the loudspeaker enclosure’s angle begins
to change (if the down tilt angle begins to move toward 0 degrees vertical then the turnbuckle
has been OVER TIGHTENED. Turn the turnbuckle until there is VERY slight tension on the Link
assembly.
Figure 10 is a close up view of the Link assembly. Certain down tilt angles may require a link to
be “dropped” from the chain as shown below. The lower quick link is positioned in various chain
segments based on the desired degree of down tilt. The turnbuckle should be adjusted, as
described in this section."
In any position, the turnbuckle must be adjusted to allow the proper amount of tension on the
Link. The Link should never pull the loudspeaker up towards vertical. The Link may be configured
with or with the chain section and quick link depending on the down tilt angle of the enclosure.
Secondary safety cables are STRONGLY recommended and should be secured to a
structural point NOT associated with the Pole Mount bracket or loudspeakers. The Link
assembly is NOT a secondary safety! One Systems does NOT supply a secondary safety.
APPENDIX 1
(PROJECTED AREA VALUES)
The values below should be supplied to the specific pole manufacturer for safety calculations.
These values were determined by adding the projected areas of the high frequency horns, the
woofer cones and ports to the cross-sectional area of the front of each enclosure listed. Each
enclosure will present a different EPA based on wind direction. The values listed below are for
wind loads directly into the front of the enclosure and represent maximum values. # # # "
####108.HTC . . . . . 169.4 in2 (109,278 mm2)
108.HSB . . . . . 188.4 in2 (119,331 mm2)
108.HTH . . . . . 250 in2 (161,290 mm2) (60o x 40o Horn)
208.HTC . . . . . 207 in2 (133,550 mm2)
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