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March 28, 2014

One Systems Natatorium (Indoor Swimming Pool) Speaker Products Installation Manual

One Systems has developed a narrow focus, application specific set of products designed for use in Natatorium (indoor swimming pool) environments. The 108IM/NAT and 112/NAT are constructed using very high molybdenum content stainless steel for all internal and external structural rigging members.

Indoor swimming pool environments can present very high relative humidity and harsh chemical atmospheres. The combination of humidity and airborne chemical composition restricts the mounting of the 112/NAT or 108/NAT to wall mounting in solid concrete or grout filled block (CMU) concrete walls ONLY! One Systems does not allow wire rope suspension of its products in Natatorium environments. Call One Systems regarding direct mounting to the structural steel of the indoor swimming pool building (Galvanic isolation is required!). One Systems offers recommendations for installation on solid concrete and grout filled block walls. Contact One Systems for additional information. Commonly used stainless steels such as 304-grade and 316-grade, known as austenitic steels, offer good corrosion resistance and strength in harsh environments. Marine-grade (specifically known as 316-grade stainless steel) offers additional protection in salt spray, ocean front, and cruise ship applications. Unfortunately, these austenitic materials are susceptible to chloride stress corrosion cracking (SCC). Both 304-grade and 316-grade are susceptible to SCC. SCC is a particular problem in indoor swimming pool environments and can result in structural failure of the rigging components. The chlorine based chemicals in the water react with “human” by-products, such as sweat, and produce chloramines. These chloramines and hydrolyzed byproducts pass into the atmosphere and are deposited on all surfaces in the Natatorium. They are transported throughout the space via the air handling system of the venue. This is particularly problematic in areas above the pool surface that are not routinely washed down or cleaned. Loudspeakers and their associated rigging are typically mounted far above the “splash zone” and these chloramines are left to settle on structural surfaces, so that SCC can progress to critical levels. Unfortunately, there are no established thresholds for chloramine exposure and associated stress levels in the structural members, so SCC can be a significant concern in Natatorium environments. Additionally there are no visual inspection methods that will detect SCC, so careful monitoring will not insure that structural members are free from this effect. One Systems cannot recommend the use of stainless steel wire ropes for suspension because of the issues discussed above.

Alternate structural materials, such as aluminum or plated steels, can also suffer from chloramine attack and other corrosion mechanisms. Fortunately, there are several grades of stainless steels that are extremely resistance to Chloride SCC. Super austenitic stainless

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steels consisting of 6% molybdenum are excellent choices. There are several super austenitic grades that are very strong and well suited for structural members due to their excellent SCC resistance. These grades are recognized by several European countries as being the only acceptable stainless steels for use in Natatorium environments where they are load bearing and above the “splash” zone and not routinely washed or cleaned. One Systems uses AL6XN (N08367) material. Other materials are 1.4547 and 1.4529 6%Mo stainless steels.

NOTE: ONE SYSTEMS DOES NOT RECOMMEND MOUNTING

IT’S PRODUCTS DIRECTLY TO THE NATATORIUM

STRUCTURAL STEEL DUE TO THE

COMPLEXITY OF THE GALVANIC

ISOLATION DESIGN AND THE CORROSIVE NATURE

OF THE ENVIRONMENT! (Contact One Systems for

additional information.)

NOTE: THIS MANUAL DOES NOT COVER THE USE OF WIRE

ROPES OR OTHER SUSPENSION METHODS

CONNECTED TO THE STRUCTURAL STEEL OF THE

BUILDING!

NOTE: STAINLESS STEEL WIRE ROPES ARE NOT

RECOMMENDED FOR USE IN

NATATORIUM (INDOOR SWIMMING POOL)

ENVIRONMENTS FOR LOUDSPEAKER SUSPENSION!

NOTE: DO NOT ATTEMPT ANY OF THE OPERATIONS IN THIS MANUAL IF YOU DO NOT FULLY UNDERSTAND THEN! ALWAYS CONSULT AN EXPERT WITH EXPERIENCE IN THE OPERATIONS NOTED IN THIS MANUAL!

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NOTE: THIS MANUAL CONSISTS OF FOUR (4) SECTIONS:

1. GENERAL ASSEMBLY OF THE LOUDSPEAKER Page 4

2. MOUNTING TO SOLID CONCRETE WALLS Page 6

3. MOUNTING TO CONCRETE BLOCK

A. GROUT FILLED CMU BLOCKS Page 13

MOUNTING TO HOLLOW CORE BLOCK IS NOT PERMITTED!

4. General NAT product specifications Page 25

NOTE: DO NOT ATTEMPT ANY OF THE OPERATIONS IN THIS MANUAL IF YOU DO NOT FULLY UNDERSTAND! ALWAYS CONSULT AN EXPERT WITH EXPERIENCE IN THE OPERATIONS NOTED IN THIS MANUAL!

NOTE: All drilling operations in the manual require masonry bits. Consult and expert regarding the appropriate bit!

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U-Bracket Assembly of the 108IM/NAT and 112IM/NAT The One Systems 108IM/NAT and 112IM/NAT use high molybdenum content stainless steel for all structural and load bearing points. Both products are supplied with an external “U- bracket” mounting configuration. This is the only approved mounting method for the NAT loudspeaker series.

NOTE: There are ONLY three (3) mounting points on the NAT enclosures. Two points are used for the external U-bracket and the third point may be used as a secondary safety point.

Both the 108IM/NAT and 112IM/NAT are supplied with external U-brackets, bolts and washers that are required to mount the U-bracket to the enclosure. DO NOT SUBSTITUTE ANY PARTS USED TO ATTACH THE U-BRACKET TO THE ENCLOSURE!

The U-bracket (AL6XN material) and associated washers and bolts are supplied and attached to each enclosure. The bracket must be disassembled for installation.

The enclosure and attached U-bracket are shown in the image below. The enclosure is attached to the U Bracket using the supplied AL6XN bolts and Nord-Lock washers. The 108/NAT uses 5/16” bolts and 5/16” (M8) Nord Lock washers. The 112/NAT uses 3/8” bolts and 3/8” Nord Lock washers. DO NOT SUBSTITUTE THESE PARTS. The enclosure should be mounted to the U bracket AFTER the U bracket has been mounted to either a solid concrete wall or grout filled block (CMU) wall!

Each Nord Lock washer set consists of TWO parts and BOTH must be used on each bolt assembly. See the image below. The Nord Lock washer is shown in light blue color.

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Also note the supplied silicone washer. This large washer must be located between the NAT enclosure and the U-bracket. This silicone washer will help prevent rotation of the NAT enclosure once the desired aiming angle is achieved.

Silicone washer AL6XN bracket Nord Lock washer AL6XN bolt

NOTE: It is critical that the correct torque values be observed when assembling the U-bracket assembly.

The 5/16” bolts used on the 108IM/NAT U-bracket should be tightened to a torque value of 14ft lb. (19.0Nm)

The 3/8” used on the 112IM/NAT U-bracket should be tightened to a torque value of 24ft lb. (32.5Nm).

Full installation instructions for the Nord Lock washers may be found on the One Systems web site (www.onesystems.com) in the Technical Papers/Install Guides under the Natatorium section.

NOTE: Indoor swimming pools (Natatoriums) can be very harsh environments. It is necessary to perform a yearly inspection of all rigging elements. It is also necessary to perform a yearly visual inspection on the U-bracket silicone washers (see the image above). Any signs of degradation or corrosion will require replacement of any structural elements, including the silicone washers.

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Mounting to Solid Concrete Walls: (Concrete anchors are NOT ALLOWED for use with cinder block construction)

IMPORTANT: IT IS THE RESPONSIBILITY OF THE INSTALLER TO VERIFY THAT THE WALL SURFACE IS STRUCTURALLY CAPABLE OF SUPPORTING THE PRODUCT AND ALL ASSOCIATED SAFETY FACTORS AS REQURED BY ALL APPLICABLE CODES AND SAFE SUSPENSION PRACTICES. THE INSTALLER SHOULD CONSULT WITH A STRUCTURAL ENGINEER PRIOR TO INSTALLATION TO INSURE THAT THE WALL SURFACE CAN SUPPORT THE WEIGHT OF THE 112/NAT OR 108/NAT AND ALL ASSOCIATED RIGGING AND ALL REQUIRED SAFETY FACTORS. THE COMPOSITION OF THE WALL STRUCTURE MUST BE REVIEWED BY A STRUCTURAL ENGINEER PRIOR TO INSTALLATION!

STOP: The approved anchors (Fischer FAZ II 10/10 C) require a minimum solid concrete wall thickness of 3.937 inches (100mm). DO NOT mount the NAT loudspeaker to a solid concrete wall if the wall thickness is not at least 3.937 inches (100mm) thick!

The NAT products are approved for use with the FAZ II 10/10C for WALL mounting only! DO NOT MOUNT FROM A CEILING!

STOP: USING FAZ II 10/10 C ANCHORS REQUIRES A TORQUE WRENCH CAPABLE OF 33 FT-LBS (45MN) OF TORQUE. THESE ANCHORS MUST BE TORQUED TO THIS VALUE. DO NOT INSTALL IF YOU DO NOT HAVE A TORQUE WRENCH! NOTE: The anchors referenced below are for use in solid concrete ONLY!

DO NOT use with cinder block (CMU) wall construction!

NOTE: ALL installation instructions below are guidelines. It is necessary to read the additional installation instructions provided by Fischer. Additional instructions may be found on the One Systems web site in the Documentation section. The Natatorium section is found in the Tech Papers/Install guides section under the onesystems.com Documentation Tab. This document is ESR 2948.

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IT IS NECESSARY TO READ ESR 2948 AND UNDERSTAND THIS DOCUMENT PRIOR TO INSTALLATION.

INSURE THAT THE SOLID CONCRETE CONFORMS TO SECTION 5.0 OF ESR 2948 AND OBSERVE ALL REQUIREMENTS IN THIS “CONDITIONS OF USE” SECTION!

BRACKET LOCATION ON SOLID CONCRETE WALLS IMPORTANT NOTE: The mounting holes in the concrete MUST be drilled at least 8 inches (203.2mm) away from any edges or openings in the solid concrete wall! DO NOT drill the bracket mounting holes in the solid concrete where wall edges or openings in the wall are closer then 8 inches (203.2mm)!

Solid Concrete Anchors:

If the 108IM/NAT or 112IM/NAT are to be mounted on a solid concrete surface, then approved concrete anchors must be used. The ONLY approved source for concrete anchors is Fischer Fixings LLC. Do not substitute any other anchors!

The approved concrete anchors are as follows:

108IM/NAT Fischer FAZ II 10/10 C (the “C” is a designator for 1.4529 6% Mo stainless steel)

112IM/NAT Fischer FAZ II 10/10 C (the “C” is a designator for 1.4529 6% Mo stainless steel)

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NOTE: ONLY HORIZONTAL MOUNTING IS PERMITTED WHEN MOUNTING ON SOLID CONCRETE WALLS! DO NOT MOUNT THE U-BRACKET IN A VERTICAL ORIENTATION!

DO NOT MOUNT VERTICALLY ON SOLID CONCRETE WALLS MOUNT BRACKET AND ENCLOSURE HORIZONTALLY ONLY!

NOTE: When mounting to a solid concrete wall ONLY one anchor per side on the U bracket is permitted. DO NOT USE MORE THEN ONE ANCHOR PER SIDE (see image below)

NOTE: Only certain holes on the U-bracket may be used and ONLY horizontal mounting is permitted. Drill only ONE mounting hole per side. The 112/NAT U-bracket is shown below

Use ONLY one hole per side. Use either of the holes shown BUT not both holes. NOTE: DO NOT DRILL MORE THEN ONE HOLE PER SIDE! The images below show the mounting holes allowed.

Use these two holes ONLY! OR Alternately these two holes ONLY!

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The 108/NAT U-bracket is shown below

Use ONLY one hole per side. Use either of the holes shown BUT not both holes. NOTE: DO NOT DRILL MORE THEN ONE HOLE PER SIDE! The images below show the mounting holes allowed.

Use these two holes ONLY! OR Alternately these two holes ONLY

The required hole depth is 3 11/32 inches (85mm) and should be verified prior to installation of the FAZ II 10/10C anchor! INSURE THAT THE HOLE IS THE CORRECT DEPTH! This hole should be perpendicular to the surface of the wall. DO NOT drill at an angle!

NOTE: Avoid drilling into rebar. Rebar locators may be rented from many sources to determine the location of rebar in the solid concrete.

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To install the FAZ II 10/10C anchor follow the steps listed below:

1. Create the drill hole. 3 11/32 (3.343 inches) deep (85mm) and 10mm diameter.

INSURE THAT THE HOLE IS THE CORRECT DEPTH! This hole should be straight and perpendicular to the surface of the wall. DO NOT drill at an angle! Consult with someone with experience drilling into solid concrete walls! THE ACTUAL BRACKET LOCATION MUST BE AS NOTED ON PAGE 7 IN THE SECTION “BRACKET LOCATION ON SOLID CONCRETE WALLS”! NOTE: The hole diameter MUST be drilled with a 10mm diameter bit. Do not substitute an imperial diameter. A metric 10mm diameter drill bit must be used!

ELECTRIC DRILLS MUST BE USED AND IN ROTATION MODE ONLY!

Note: One Systems offers the NASH 1009008A 10mm drill bit. This drill may be sourced from One Systems Nashville.

2. Clean the hole completely using the tool shown below. It is important to completely clean the hole. The cleaning operation should be performed several times!

NOTE: It is critical to completely clean the drilled hole. It is necessary to follow the anchor manufacturers cleaning instructions. See the recommended Fischer tool (89300) below and may be sourced directly thru Fischer.

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NOTE: The bracket images shown below are for illustration purposes only. In actual assembly the NAT external U-bracket for the 108/NAT or 112/NAT must be used!

IMPORTANT: BEFORE DRIVING THE FAZ II 10/10C ANCHOR INTO THE HOLE, INSURE THAT THE HEX NUT IS IN THE PROPER POSITION. THE CORRECT POSITION OF THE HEX NUT IS WHEN 5/64 inches to 1/8th inches (2mm TO 3 mm) OF THE THREADED BOLT IS PROJECTING BEYOND THE END OF THE NUT.

2mm to 3mm this end of thread exposed

3. Mount the 108/NAT or 112/NAT U-bracket over the holes and drive the FAZ II 10/10C anchor in place as shown.

The FAZ II 10/10C is driven in place as shown below. The NAT U-bracket must be in place before the anchor is driven into the hole!

4. Apply the required torque as shown below in the center image. The required torque is 33ft lbs (45 NM).

NOTE: The FAZ II 10/10 C is supplied with the correct washer and nut. DO NOT SUBSTITUTE ANY PARTS! Additional instructions for installing these concrete anchors are found on the One Systems web site (www.onesystems.com) in the Documentation section under “Tech Papers/Install Guides”. The document is ESR 2948. THIS DOCUMENT MUST BE READ AND UNDERSTOOD PRIOR TO INSTALLATION!

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NOTE: The required torque on the FAX II 10/10C M10 nut is 33 ft-lbf (45 Nm). DO NOT EXCEED THIS TORQUE BUT INSURE THAT THIS TORQUE IS APPLIED.

Once the FAZ II 10/10C nut is tightened to the specified torque, DO NOT re-torque or tighten further. DO NOT re-torque later!

NOTE: DO NOT USE ANY THREAD LOCKER WITH THIS PRODUCT! Use ONLY the parts supplied!

The contact information for Fischer is:

Fischer Fixings LLC 62 Orange Ave Suffern, New York 10901 www.fischerfixingsusa.com Phone: + 1-845-504-5098 NOTE: These anchors are NOT PERMITTED for use with “cinder block” (CMU) construction! See information below for grout filled masonry block. Below is what is needed to hang a single 112/NAT or 108/NAT cabinet in a solid concrete wall:

2 ea. NASH 1009007A FAZ II 10/10C Fischer anchors. One Systems Nashville supplied.

1 ea. Fischer air tool (Fischer part 89300…this part is re-useable). Fischer supplied

1ea. NASH 1009008A 10mm Masonry Drill Bit. One Systems supplied

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MOUNTING TO GROUT FILLED CONCRETE BLOCK IMPORTANT: IT IS THE RESPONSIBILITY OF THE INSTALLER TO VERIFY THAT THE WALL SURFACE IS STRUCTURALLY CAPABLE OF SUPPORTING THE PRODUCT AND ALL ASSOCIATED SAFETY FACTORS AS REQURED BY ALL APPLICABLE CODES AND SAFE SUSPENSION PRACTICES. THE INSTALLER SHOULD CONSULT WITH A STRUCTURAL ENGINEER PRIOR TO INSTALLATION TO INSURE THAT THE WALL SURFACE CAN SUPPORT THE WEIGHT OF THE 112/NAT OR 108/NAT AND ALL ASSOCIATED RIGGING AND ALL REQUIRED SAFETY FACTORS. THE COMPOSITION OF THE WALL STRUCTURE MUST BE REVIEWED BY A STRUCTURAL ENGINEER PRIOR TO INSTALLATION!

NOTE: MOUNTING ON HOLLOW CORE BLOCK(CMU) IS NOT PERMTTED! DO NOT MOUNT ON HOLLOW CORE BLOCK! MOUNT ON GROUT FILLED BLOCK ONLY! STOP! THE BLOCK SIZE MUST BE 16 INCHES X 8 INCHES X 8 INCHES! (OR METRIC EQUIVALENT) DO NOT USE SMALLER BLOCK SIZE. DO NOT ATTEMPT TO MOUNT THE 112NAT OR 108NAT TO SMALLER BLOCK SIZES! THE BLOCK (CMU) MUST BE ASTM C-90 OR EQUIVALENT! A TORQUE WRENCH IS REQUIRED FOR THIS INSTALLATION! BRACKET LOCATION ON GROUT FILLED BLOCK WALLS! The mounting holes in the grout filled concrete block MUST be drilled at least 12 inches (305mm) away from any edges or openings in the grout filled block wall! DO NOT drill the bracket mounting holes in the grout filled CMU (concrete masonry unit) block where wall edges or openings in the wall are closer then 12 inches (305mm)!

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One Systems requires ONLY horizontal mounting to grout filled concrete block (CMU). Both the 112/NAT and 108/NAT must be mounted horizontally as shown below. NOTE: ONLY HORIZONTAL MOUNTING IS PERMITTED WHEN MOUNTING ON GROUT FILLED BLOCK WALLS! DO NOT MOUNT THE U BRACKET IN A VERTICAL ORIENTATION!

DO NOT MOUNT VERTICALLY ON GROUT FILLED BLOCK WALLS

MOUNT BRACKET AND ENCLOSURE HORIZONTALLY ONLY! DO NOT MOUNT THE 112/NAT OR 108/NAT VERTICALLY. MOUNT ONLY AS SHOWN BELOW! Note the horizontal orientation of the U-Bracket!

THE ACTUAL BRACKET LOCATION MUST BE AS NOTED ON PAGE 13 IN THE SECTION “BRACKET LOCATION ON GROUT FILLED BLOCK WALLS”!

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The 112/NAT and 108/NAT must be mounted by drilling thru the entire grout filled block as shown below. It is necessary to drill completely thru the grouted block and run the 3/8”-16 AL6XN all thread thru the block. Large AL6XN backing plates for structural support are required. The front and back sides of the block are shown in the images below. The drilled hole should be thoroughly cleaned prior to inserting the 3/8”-16 AL6XN all threaded rod. IMPORTANT NOTE: THE HOLE MUST BE DRILLED STRAIGHT. INSURE THAT THE HOLE IS NOT DRILLED AT AN ANGLE. THE NORD-LOCK WASHERS AND NUTS MUST BE FLAT AND PARALLEL WITH BOTH THE U BRACKET AND BACKING PLATES FOR THE NORD LOCK WASHERS TO FUNCTION PROPERLY. INSURE THAT THE HOLE IS NOT DRILLED AT AN ANGLE! Consult with someone with experience drilling into grout filled block walls! The front side is shown in the image below. This image shows the block wall and NAT U-bracket.

SEE PAGE 13 FOR PROPER LOCATION OF THE BRACKET ON THE WALL IN THE SECTION LABELED “BRACKET LOCATION ON GROUT FILLED BLOCK WALLS”! The rear side of the mounting configuration is shown in the image below. Note the required use of the large AL6XN “backing plates”. These plates MUST be used.

AL6XN backing plates on “rear” section BACKING PLATE LOCATION NOTE: Insure that the backing plates touch a single block only! Do not allow the backing plates to bridge across to a second CMU block!

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A side view of the assembly is shown below. NOTE: The silicone sealing caulk is not shown on this image but is required for this assembly.

MOUNT ON GROUT FILLED BLOCKS ONLY! An image of the Nord-Lock washer set is shown below. Note the two parts of each washer set and the orientation of the washer parts. Additional information for the Nord-Lock washers may be found on the One Systems web site in the Natatorium section of the Documents section under “Tech papers/Install guides”.

The image below shows the location of the silicone caulk. NOTE: USE ONLY BOSS 801 SILICONE. DO NOT SUBSTITUTE ANY OTHER MATERIAL OR ANY OTHER BRAND. USE BOSS 801 SILICONE ONLY! The application of the Boss 801 silicone is the final step of the mounting process. Apply the Silicone to the proper location AFTER the U-bracket and backing plates have been installed and tightened to the specified torque. Pages 19 thru 21 describe the installation of the 112/NAT and pages 22 thru 24 describe the installation of the 108/NAT. DO NOT proceed to these pages yet. It is necessary to continue reading the information below prior to beginning the actual bracket installation. Apply a generous bead of the Boss 801 silicone caulk around the OUTSIDE perimeter of the NAT U bracket and the block wall. Also apply a generous bead of Boss 801 silicone caulk around the OUTSIDE perimeter the AL6XN backing plates and the wall as shown below.

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NOTE: DO NOT APPLY THE BOSS 801 SILICONE BETWEEN THE U BRACKET AND THE WALL OR BETWEEN THE BACKING PLATE AND THE WALL. THE SILICONE BEAD SHOULD BE APPLIED AROUND THE PERIMETER ONLY!

MOUNT ON GROUT FILLED BLOCKS ONLY!

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The image below illustrates the location of the Boss 801 silicone (shown in blue color). The entire perimeter should be caulked. Do not apply the silicone between the U-bracket and the wall or the backing plate and the wall.

Note the location of the silicone beads shown in blue above. The correct location forms a fillet as shown above. Do not apply between the wall and the U-bracket or wall and backing plate. The U-Bracket side includes one U-bracket, two AL6XN nuts, two Nord-Lock washers, and a bead of Boss 801 silicone caulk. The rear side consists of two AL6XN backing plates, two AL6XN nuts, two Nord-Lock washers, and two beads of Boss 801 silicone caulk (one bead around each backing plate). There are ONLY two AL6XN all thread rods used in the assembly, ONE per side only! NOTE: All of the information from page 13 thru page 18 applies to BOTH the 112/NAT and 108/NAT. The additional information found below in pages 19 thru 21 is specific to the 112/NAT. The information found below in pages 22 thru 24 is specific to the 108/NAT. THE INFORMATION ON PAGES 13 THRU 18 MUST BE READ BEFORE PROCEEDING TO THE SPECIFIC BRACKET INSTALLATION SECTIONS!

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MOUNTING THE 112/NAT NOTE: It is important to properly locate the NAT U-bracket on the block wall. The 112/NAT and 108/NAT each require a different mounting location relative to the concrete block cells. The drilled thru hole must NOT be located near the edges of the block or in the grout between the blocks. See the section on page 13, “BRACKET LOCATION ON GROUT FILLED BLOCK WALLS” for additional details. NOTE: MOUNTING ON HOLLOW CORE BLOCK IS NOT PERMTTED! DO NOT MOUNT ON HOLLOW CORE BLOCK! MOUNT ON GROUT FILLED BLOCK ONLY! NOTE: Only certain holes on the U-bracket may be used and only horizontal mounting is permitted. Drill only one mounting hole per side.

Use ONLY one hole per side. Use either of the holes shown BUT not both holes. NOTE: DO NOT DRILL MORE THEN ONE HOLE PER SIDE! The images below show the mounting holes allowed.

Use these two holes ONLY! OR Alternately these two holes ONLY!

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The required hole size is 1/2 inches (12.7mm). Drill completely thru the concrete block. Use a rotary drill only! (One Systems does not supply this 1/2” masonry drill) NOTE: Avoid drilling into rebar. Rebar locators may be rented from many sources to determine the location of rebar in the concrete block.

IMPORTANT NOTE: THE HOLE MUST BE DRILLED STRAIGHT. INSURE THAT THE HOLE IS NOT DRILLED AT AN ANGLE. THE NORD-LOCK WASHERS AND NUTS MUST BE FLAT AND PARALLEL WITH BOTH THE U BRACKET AND BACKING PLATES FOR THE NORD LOCK WASHERS TO FUNCTION PROPERLY. INSURE THAT THE HOLE IS NOT DRILLED AT AN ANGLE! Consult with someone with experience drilling into grout filled block walls!

The location of the holes in the blocks (one per side) is shown below. The two holes shown per side only represent the allowed mounting locations. ONLY one hole per side should be drilled! NOTE: Please note the location of the bracket relative to the structure of the blocks. The 1/2” mounting holes (only one per side) must NOT be drilled between the blocks. Insure that the holes are drilled in the block “cores” only and away from the block vertical members!

Please note in the image above how the 112/NAT U-bracket spans across 3 individual concrete blocks. The dashed lines represent the internal structure of the individual blocks. Only drill the holes in the “core” areas as shown above! NOTE: It is critical to note the location of the U-bracket relative to the individual blocks when mounting the 112/NAT. When tightening the nuts a torque of 21 ft. lbs (28.5Nm) should be used. When turning the nuts turn both nuts in order to close the cams on both washer pairs before tightening to minimize settlements. KEEP BOTH NUTS SECURED WHILE TIGHTENING! NOTE THE APPROXIMATE LOCATION OF THE BACKING PLATES ON PAGE 21.

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The image below shows the rear of the block wall with the approximate location of the rear AL6XN backing plates. The backing plates are shown in red.

Approximate location of 112/NAT rear backing plates on grout filled block wall.

BACKING PLATE LOCATION NOTE: Insure that the backing plates touch a single block only! Do not allow the backing plates to bridge across to a second CMU block! All parts except the Boss 801 silicone are available from One Systems. To mount either a 112/NAT the following parts are required: 2 ea. NASH1009010A 3/8”-16 AL6XN all thread 2 ea. NASH 1009011A Backing plate 4 ea. NASH1009006A Nord-Lock 3-8inSPSS-254 washer sets (each set consists of two parts bonded together!) 4 ea. NASH1009002A 3/8”-16 AL6XN nuts 1 ea. Boss 801 silicone caulk (contact Boss at 1 800 928 2677 for local distributors or sources. Call this number for International sources as well.)

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MOUNTING THE 108/NAT

NOTE: MOUNTING ON HOLLOW CORE BLOCK IS NOT PERMTTED! DO NOT MOUNT ON HOLLOW CORE BLOCK! MOUNT ON GROUT FILLED BLOCK ONLY! NOTE: It is important to properly locate the NAT U-bracket on the block wall. The 112/NAT and 108/NAT each require a different mounting location relative to the concrete block cells. The drilled thru hole must NOT be located near the edges of the block or in the grout between the blocks. See the section on page 13, “BRACKET LOCATION ON GROUT FILLED BLOCK WALLS” for additional details. NOTE: Only certain holes on the U-bracket may be used and ONLY horizontal mounting is permitted. Drill only ONE mounting hole per side.

Use ONLY one hole per side. Use either of the holes shown BUT not both holes. NOTE: DO NOT DRILL MORE THEN ONE HOLE PER SIDE! The images below show the mounting holes allowed.

Use these two holes ONLY! OR Alternately these two holes ONLY!

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The required hole size is 1/2 inches (12.7mm). Drill completely thru the concrete block. Use a rotary drill only! (One Systems does not supply he 1/2” masonry drill). NOTE: Avoid drilling into rebar. Rebar locators may be rented from many sources to determine the location of rebar in the concrete block. IMPORTANT NOTE: THE HOLE MUST BE DRILLED STRAIGHT. INSURE THAT THE HOLE IS NOT DRILLED AT AN ANGLE. THE NORD-LOCK WASHERS AND NUTS MUST BE FLAT AND PARALLEL WITH BOTH THE U BRACKET AND BACKING PLATES FOR THE NORD LOCK WASHERS TO FUNCTION PROPERLY. INSURE THAT THE HOLE IS NOT DRILLED AT AN ANGLE! Consult with someone with experience drilling into grout filled block walls! The location of the holes in the blocks (one per side) is shown below. The two holes shown per side in the image below only represent the allowed mounting locations. ONLY one hole per side should be drilled! NOTE: Please note the location of the bracket relative to the structure of the blocks. The 1/2” mounting holes (only one per side) must NOT be drilled into the grout between the blocks. Insure that the holes are drilled in the block “cores” only and away from the block vertical members!

Please note in the image above how the 108/NAT U-Bracket spans across 2 individual concrete blocks. The dashed lines represent the internal structure of the individual blocks. Only drill the holes in the “core” areas as shown above! NOTE: It is critical to note the location of the U-Bracket relative to the individual blocks when mounting the 108/NAT. When tightening the nuts a torque of 21 ft. lb. (28.5Nm) should be used. When turning the nuts turn both nuts in order to close the cams on both washer pairs before tightening to minimize settlements. KEEP BOTH NUTS SECURED WHILE TIGHTENING! NOTE THE APPROXIMATE LOCATION OF THE BACKING PLATES ON PAGE 24.

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The image below shows the rear of the block wall with the approximate location of the rear AL6XN backing plates. The backing plates are shown in red.

Approximate location of 108/NAT rear backing plates on grout filled block wall.

BACKING PLATE LOCATION NOTE: Insure that the backing plates touch a single block only! Do not allow the backing plates to bridge across to a second CMU block! All parts except the Boss 801 silicone are available from One Systems. To mount either a 108/NAT the following parts are required: 2 ea. NASH1009010A 3/8”-16 AL6XN all thread 2 ea. NASH 1009011A Backing plate 4 ea. NASH1009006A Nord-Lock 3-8inSPSS-254 washer sets (each set consists of two parts bonded together!) 4 ea. NASH1009002A 3/8”-16 AL6XN nuts 1 ea. Boss 801 silicone caulk (contact Boss at 1 800 928 2677 for local distributors or sources). Call this number for International distributors as well.)

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108IM/NAT The 108IM/NAT features an 8” (203mm) low frequency driver and an ETS based high frequency compression driver. The 108IM/NAT HF driver is a very high performance and medium format design. The 108IM/NAT is supplied with two high frequency horns, both of which are fully rotatable and interchangeable. The ETS-64 is a 60 degree by 40 degree wave guide and is mounted in the enclosure as supplied by the factory. The 108IM/NAT also includes an ETS-105/60 horn that features a 105 degree by 60 degree acoustical radiation pattern. The procedure for changing the high frequency horns is found on the One Systems web site in the documentation section under the “tech papers and install guides” tab. (One Systems Interchangeable High Frequency Horns (For 108IM loudspeaker). The 108IM/NAT is a high performance system specifically designed for use in indoor swimming pool environments. The design features a peak power handling rating of 800 watts and is available in an 8 ohm (lo Z) configuration only. There are only two mounting points (AL-6XN) and the 108/NAT may be suspended using the supplied “U” bracket only. (Note: there is a third point on the rear of the enclosure for use as a secondary safety.) The 108IM/NAT is supplied with an external weather cover and IP68 gland nut for simple wiring. The input is via a barrier strip. The enclosure is available in white color. The 108IM/NAT is a closed box design. This acoustic configuration allows for simple low frequency equalization using mixer strip EQ or other shelving style filters.

112IM/NAT The 112IM/NAT features a 12” (305mm) low frequency driver and an ET based large format high frequency compression driver. The 112IM/NAT HF driver is a very high performance large format design. The 112IM/NAT is supplied with a high frequency horn that is fully rotatable and interchangeable. The ET64 is a 60 degree by 40 degree wave guide and is mounted in the enclosure as supplied by the factory. The 112IM/NAT can also be fitted with the ET-105/60 horn that features a 105 degree by 60 degree acoustical radiation pattern (the ET-105/60 is not included in the factory supplied 112IM/NAT, but may be ordered from One Systems at no additional charge). The procedure for changing the high frequency horns is found on the One Systems web site in the documentation section under the “tech papers and install guides” tab (One Systems Interchangeable High Frequency Horns for 112IM, 115TW and 115RW horns loudspeakers). This same procedure should be followed for the 112IM/NAT. The 112IM/NAT is a high performance system specifically designed for use in indoor swimming pool environments. The design features a peak power handling rating of 3200 watts and is available in an 8-ohm (lo Z) configuration only. There are only two mounting points (AL-6XN stainless steel) and the 112IM/NAT may be suspended using the supplied U-bracket only.( Note: there is a third point on the rear of the enclosure for use as a secondary safety.) The enclosure is only available in white color. The 112IM/NAT is supplied with an external weather cover and IP68 gland nut for simple wiring. The input is via a barrier strip.

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The 112IM/NAT is a closed box design. This acoustic configuration allows for simple low frequency equalization using mixer strip EQ or other shelving style filters.

108IM/NAT Features and Benefits Designed for use in Natatorium (Indoor Swimming Pool) Environments 8-Inch Two-Way High-Performance Sealed Enclosure Design Two Fully Rotatable and Interchangeable High Frequency Horns Available in White Finish Low Impedance (8-Ohm) High Power Design U-bracket Suspension Supplied

108IM/NAT Specifications

Frequency Response 65Hz – 16kHz Coverage Pattern 60 X 40 (ETS60/40) 105 X 60 (ETS105/60) Passive Crossover 2000Hz (ETS 60x40) 1600Hz (ETS 105x60) Inputs Barrier Strip (Full Range Only) System Sensitivity 92dB (1 watt - 1 meter) Power Handling 200 watts continuous 400 watts program 800 watts peak Nominal Impedance 8-ohms Low Frequency One Systems ONE8-134 Woofer High Frequency One Systems ETS Compression Driver Suspension/Mounting Points 2 Each U-bracket mount only (Supplied) 5/16” 1 Safety Point on enclosure rear Enclosure Dimensions 483.8mm x 243mm x 271mm 19” x 9.6” x 10.7” Weight 16.5kg (36.3 lb.) including U Bracket Optional Accessories No Optional Accessories Allowed

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112IM/NAT Features and Benefits Designed for use in Natatorium (Indoor Swimming Pool) Environments 12 Inch Two Way High Performance Sealed Enclosure Design Fully Rotatable and Interchangeable High Frequency Horns Available in White Finish Low Impedance (8-Ohm) High Power Design U-bracket Suspension Supplied

112IM/NAT Specifications Frequency Response 60Hz – 16kHz Coverage Pattern 60 X 40 (ETS60/40) Available 105 X 60 (ETS105/60) Passive Crossover 1800Hz (ET 60x40) 1300Hz (ET 105x60) Inputs Barrier Strip (Full Range Only) System Sensitivity 96dB (1 watt – 1 meter) Power Handling 800 watts continuous 1600 watts program 3200 watts peak Nominal Impedance 8-ohms Low Frequency ONE SYSTEMS 12I/O-1 Woofer High Frequency ONE SYSTEMS ET-1F Compression Driver Suspension/Mounting Points 2 Each U-bracket mount only (Supplied) 3/8” 1 Safety Point on Enclosure rear Enclosure Dimensions 749mm x 368mm x 414mm 29.5” x 14.5” x 16.3” Weight 36.6kg (80.7 lb.) including U-bracket Optional Accessories No Optional Accessories Allowed