Operating Instructions — USW-112XP
Compact Subwoofers

The USW-112XP compact narrow subwoofer further extends the USW family. With its great power-to-size ratio, it provides big bass sound for very tight spaces. Its compact rectangular enclosure and slanted connector panel enable flush-mounting of the cabinet against wall surfaces, reducing required installation depth to 12 inches, including connectors.
The USW-112XP is ideal for installations requiring high performance and versatility along with an appealing, discreet aesthetic appearance. Designed to be the ideal companion to Meyer Sound’s ULTRA-X20XP, it also complements the low frequencies in other Meyer Sound loudspeakers, such as the UP-4slim and those in the UPM family.
The USW-112XP has an operating frequency range of 35–140 Hz with a linear peak SPL of 119.5 dB. The bass reflex cabinet employs a low-velocity port design based on the Meyer Sound USW-210P subwoofer for high efficiency and low port distortion.

USW-112XP with Front Grille Removed
The cabinet houses a Class D power amplifier with signal processing including correction filters for phase and frequency response, and driver protection circuitry.
The USW-112XP model with IntelligentDC technology suits applications where AC distribution is a limiting factor. The USW-112XP receives DC power and balanced audio from a Meyer Sound MPS power supply using a single composite cable and connector.
The USW-112XP requires an external Meyer Sound MPS 48 V DC power supply. Using an external power supply eliminates the need for wiring conduits while still preserving the advantages of a self-powered loudspeaker system. The unit's onboard amplifier and signal-processing circuits are designed to store DC power and tolerate voltage drops, thereby accommodating long, light-gauge cable runs.

USW-112XP Rear View
The RMS™ remote monitoring system is available through the MPS-488HPp power supply and provides comprehensive, real-time information about loudspeaker parameters from a Mac® or Windows®-based computer running Compass® control software via the RMServer interface.
Meyer Sound constructs the USW-112XP cabinet from premium birch plywood coated with a durable black-textured finish and includes a powder-coated, round-perforated steel grille to protect the drivers. Weather protection and custom color finishes for specific cosmetic requirements are available options.
With its versatile shape, the USW-112XP can be placed on the ground in a horizontal or vertical position to accommodate installation requirements and includes an integral 35 mm pole mount receptacle with M20 threads for added stability.

USW-112XP in Horizontal Position to Show the 35 mm Pole Mount
The USW-112XP comes standard with M8 mounting points at the top and bottom for use with the optional U-bracket that enables wall, ceiling, or truss mounting.

USW-112XP with MUB-USW-112 in Ceiling Mount Position

USW-112XP with MUB-USW-112 in Vertical Wall Mount Position

USW-112XP with Eye Bolt

ULTRA-X20XP Pole Mounted on the USW-112XP using MPK-POLE and PAS-M8 Adapter Sleeve
USW-112XP Input Connector

The USW-112XP loudspeaker uses a Phoenix 5-pin male connector to receive DC power and balanced audio. The input connector’s five pins, two for DC power (-, +) and three for balanced audio (shield/ground, -, +), are clearly labeled on the USW-112XP rear panel, as shown in the figure below.

USW-112XP Rear Panel with Phoenix 5-pin Male Connector
Caution
When wiring USW-112XP loudspeaker cables, it is extremely important that each pin be wired correctly. Make sure the 48 V DC from the external power supply is wired directly (and only) to the 48 V DC pins on the USW-112XP loudspeaker connector, and that the polarity is observed (- to -, + to +) to avoid damaging the loudspeaker. Make sure to wire the audio pins correctly or system performance will be compromised.
Note
Also, see the IntelligentDC Products Wiring Verification Installation Instructions.
USW-112XP LED

The USW-112XP uses the three-color LED on its rear panel to indicate the loudspeaker’s status.

USW-112XP LED - Limit and Status Indicator
Power On (Green)

When powering up the USW-112XP loudspeaker, the following startup events occur and are indicated by the LED:
The LED flashes all colors during power-up.
After a few seconds, the LED lights solid green, indicating the loudspeaker is ready to reproduce audio.
Caution
If the power-up sequence leaves the LED flashing multiple colors or solid red, and it does not produce audio, the loudspeaker has encountered an error and may need to be serviced. Contact Meyer Sound Technical Support.
If the power-up sequence leaves the LED solid red and the loudspeaker outputs audio, its voltage may have dropped below 25 V DC. Cease operation immediately and verify its power supply and cabling.
Limiting (Yellow)

The USW-112XP LED illuminates yellow when the loudspeaker’s signal rises 2 dB above the limiting threshold, indicating that a safe, optimal level has been exceeded. When limiting is engaged, gain is reduced. The limiter protects the driver and prevents signal peaks from causing excessive distortion in the amplifier, thereby preserving headroom and maintaining a smooth frequency response at high levels. When source levels return to normal below the limiter’s threshold, the LED turns green and limiting ceases.
The USW-112XP performs within its acoustical specifications at normal temperatures when the USW-112XP LED is green, or when limiting is not continuous. During continuous limiting, the loudspeaker is nearing its operational limits, resulting in the following effects:
Increasing the input level has no effect.
Distortion increases due to clipping and nonlinear driver operation.
The driver is subjected to excessive heat and excursion, which compromises its life span and may eventually damage it.
Caution
If the USW-112XP loudspeakers in a system begin to limit before reaching the desired SPL, Meyer Sound recommends adding more loudspeakers to the system to achieve the desired SPL without exposing them to the hazardous conditions listed above.
Clipping (Red)

The USW-112XP LED turns red when the loudspeaker’s input stage clips, causing the amplifier to overload. The source level must be reduced.
Caution
If the USW-112XP LED turns solid red and the loudspeaker continues to output audio, though at reduced levels, the loudspeaker’s voltage may have dropped below 25 V DC. Cease operation immediately and verify its power supply and cabling.
USW-112XP Current Draw and Cable Requirements

The current draw for the USW-112XP is dynamic and fluctuates as operating levels change. The cabling between the USW-112XP and its external power supply adds resistance and hence causes a voltage drop at the loudspeaker. Because lower DC voltages compromise amplifier performance (peak SPL), and in some cases frequency response, use short cables to minimize the cable resistance. For long cable runs, use a large cable gauge for DC power and a separate balanced audio cable for audio. For more information, see Long Cable Runs with Separate Cable for DC Power and Audio.
Cable Lengths and Cable Gauges

Cable lengths up to 150 feet between the USW-112XP and its external power supply are supported with only 1 dB of peak SPL loss using 18 AWG wire. Longer cable lengths are possible with heavier gauge wires, as described in the table below.
Cable Gauge | Resistance (Ω/ft) | Approximate Max. Length |
---|---|---|
12 AWG | 0.0016 | 600 ft |
14 AWG | 0.00253 | 375 ft |
16 AWG | 0.00402 | 237 ft |
18 AWG | 0.00636 | 150 ft |
24 AWG | 0.01008 | 87 ft |
Cable Gauge | Resistance (Ω/m) | Approximate Max. Length |
---|---|---|
2.50 mm2 | 0.0052 | 157 m |
1.50 mm2 | 0.01076 | 87 m |
1.00 mm2 | 0.02087 | 45 m |
0.75 mm2 | 0.03307 | 27 m |
Note
The total cable resistance between the USW-112XP and its external power supply should not exceed 2 Ω.
Calculating the Maximum Cable Length

The maximum cable length for a USW-112XP can be calculated with the following formula:
maximum length = 2 Ω / (2 * cable resistance in Ω/ft)
For example, the maximum length of an 18 AWG cable with a resistance of 0.00636 Ω/ft is 157.2 feet [2 /(2 * 0.00636)].
Wiring USW-112XP Loudspeaker Cables with Belden 1502 Cable (or equivalent)

The most convenient method of wiring USW-112XP loudspeaker cables is with a multiconductor cable such as Belden 1502, which has dedicated conductors for DC power and balanced audio in a single jacket. When wiring USW-112XP loudspeaker cables with Belden 1502, use the conventions illustrated in the figure below and described in the table below.
The thicker red and black wires (18 AWG) are for DC power. Cables can be up to 150 ft with just 1 dB of peak SPL loss.
The blue, white, and shield drain wires (shielded together) are for audio.

Belden 1502 Composite Cable
Wire | Signal | Gauge |
---|---|---|
Red | DC power (+) | 18 AWG |
Black | DC power (–) | 6.9 A peak (115 V AC); 3.4 A peak (230 V AC); 7.9 A peak (100 V AC) |
White | Balanced audio (+) | 22 AWG |
Blue | Balanced audio (–) | 22 AWG |
Shield drain | Balanced audio, (shield) | 24 AWG |
Caution
Make sure the 48 V DC from the external power supply is wired directly (and only) to the 48 V DC pins on the USW-112XP loudspeaker connector, and that the polarity is observed (- to -, + to +) to avoid damaging the loudspeaker. Make sure to wire the audio pins correctly or system performance will be compromised.
Long Cable Runs with Separate Cable for DC Power and Audio

For installations where Belden 1502 is not feasible, or for installations that require cable runs longer than 150 ft, separate cables for DC power and balanced audio may be used: a large-gauge cable for DC and a high-quality, balanced audio cable for audio. The separate cables attach to the Phoenix connector at the loudspeaker as shown in the figures below. DC power cable runs longer than 150 ft require cable gauges larger than 18 AWG; see Cable Lengths and Cable Gauges.

Phoenix Connector with Separate Power and Audio Cables

Separate Cables for DC Power and Balanced Audio
Connecting to an External Meyer Sound Power Supply

USW-112XP loudspeakers require an external Meyer Sound IntelligentDC power supply. The MPS-488HP is a 19-inch (1RU) unit that distributes DC power and balanced audio to USW-112XP speakers or other Meyer Sound IntelligentDC loudspeakers. Composite multi-conductor cables (e.g., Belden® 1502) can deliver both DC power and balanced audio. The MPS-488HP can connect to Meyer Sound’s RMS remote monitoring system. The MPS-488HP receives eight channels of balanced audio from its XLR female Channel Inputs. It routes the audio, along with 48 V of DC power, to its eight Channel Outputs. The MPS-488HP can drive up to eight USW-112XP loudspeakers.
The MPS-482HP is a 1RU, half-rack-width unit with two input channels and two output channels that is ideal for applications requiring a small channel count.
Tip
See meyersound.com/product/mps for more details about Meyer Sound IntelligentDC power supplies.
Cable lengths up to 150 feet for DC power are possible when using 18-AWG wire, with just 1 dB of loss in peak SPL. Longer cable runs are possible for moderate applications that do not drive the loudspeakers to maximum output, or for installations with heavier gauge wires. The use of composite multiconductor cables (such as Belden 1502 or equivalent) allows a single cable to carry both DC power and balanced audio to the USW-112XPs.
Power off the MPS-488HP.
Use balanced XLR cables to connect audio sources from a mixer or processor to the MPS-488HP Channel Inputs.
Use the MPS-488HP Link switches to route Channel Inputs to the desired Channel Outputs.
Tip
See the MPS-488HP Operating Instructions for complete information.
Connect the USW-112XP loudspeakers to the MPS-488HP Channel Outputs, as shown in the figure below.
Use composite cables (such as Belden 1502 or equivalent) wired for both DC power and balanced audio and outfitted with the appropriate connectors.
To connect USW-112XP loudspeakers to the MPS-488HPp, use Phoenix 5-pin male to Phoenix 5-pin female cables.
MPS-488HPp with Eight USW-112XP Loudspeakers
Tip
It is possible to use a two-conductor cable for DC power and a three-conductor cable for balanced audio with both cables attached to a single Phoenix connector on each end. This approach supports use of a larger gauge DC cable, which allows longer cable runs (see Long Cable Runs with Separate Cable for DC Power and Audio.
Caution
Make sure USW-112XP loudspeaker cables are wired correctly. For details about assembling loudspeaker cables, see Phoenix Cable Assembly.
Power on the MPS-488HP and monitor the LEDs on the front panel to verify connections. For information about the MPS-488HP LEDs, refer to the MPS-488HP Operating Instructions.
Check the LEDs on the USW-112XP rear panels and verify they are green (ready to reproduce audio).
Enable output from the audio sources (from the mixer or processor) connected to the MPS-488HP.
Note
Connecting to an MPS-482HP power supply is similar. Refer to the MPS-482HP Operating Instructions. The 48 V IntelligentDC Wiring diagram and the IntelligentDC Products Wiring Verification Installation Instructions are also available for reference.
QuickFly Rigging

The USW-112XP loudspeaker is compatible with MeyerSound’s QuickFly system, a comprehensive collection of custom-designed rigging, flying, and mounting options. Comprised of rugged, reliable, and easy-to-configure components, QuickFly enables deploying of USW-112XP loudspeakers at precise angles.
Important Safety Considerations

When installing Meyer Sound loudspeakers, the following precautions should always be observed:
All Meyer Sound products must be used in accordance with local, state, federal, and industry regulations. It is the owner’s and user’s responsibility to evaluate the reliability of any rigging method for their application. Rigging should only be carried out by experienced professionals.
Use mounting and rigging hardware that has been rated to meet or exceed the weight being hung.
Make sure to attach mounting hardware to the building's structural components (studs or joists), and not just to the wall surface. Verify that the building's structure and the anchors used for the installation will safely support the total weight of the mounted loudspeakers including the rigging components.
Use mounting hardware appropriate for the surface where the loudspeaker will be installed.
Make sure bolts and eye bolts are tightened securely. Meyer Sound recommends using medium-strength blue thread locker on eye bolt threads and safety cables.
Inspect mounting and rigging hardware regularly. Immediately replace any worn or damaged components.
Caution
When pole-mounting an ULTRA-X20XP onto a USW-112XP, to keep it stable, do not lift the ULTRA-X20XP higher than 44 inches from the top of the USW-112XP. This limit is due to the small footprint and light weight of the USW-112XP.
USW-112XP Rigging Optional Accesories

Meyer Sound offers two rigging options for the USW-112XP, as described in the table below. For self-weight, rigging loads and dimensional information, see USW-112XP Specifications.
Model | Features |
---|---|
MUB-USW-112 U-Bracket Kit (PN 40.298.050.01) | The MUB-USW-112 U-Bracket allows a single USW-112XP loudspeaker to be mounted to a wall (in either vertical or horizontal orientations), to the ceiling, from a truss, or onto the floor. The kit includes two M8 bolts/washers and two M8 knobs/washers. |
MPK-POLE-35MM-M20 Adjustable Pole Mount Kit (PN 40.010.973.01) | Adjustable length 927–1524 mm (36.5–60 in) pole with assisted lift. Lower shaft fits 35 mm cups or use the removable M20 threaded lug for added stability. Additional 35 mm to 38 mm (1.5 in) adapter included for 38 mm mounts. The upper shaft includes a PAS-M8 Adapter Sleeve to fit loudspeakers with M8 rigging nuts and a PAS-M20 Adapter Sleeve to fit loudspeakers with 35 mm and M20 internal pole mounts. |
Rigging Points

The top and bottom faces of the USW-112XP cabinet each include a high-strength, corrosion-resistant stainless steel point that provides an M8 x 1.25 threaded hole for easy connection to QuickFly rigging and third-party mounting options.

USW-112XP Rigging Points
The USW-112XP also includes an integral 35 mm pole mount receptacle on one side with M20 threads for added stability.

USW-112XP Integral Pole Mount
MUB-USW-112 U-bracket

The MUB-USW-112 U-Bracket (PN 40.298.050.01) allows a single USW-112XP loudspeaker to be mounted to a wall in either vertical or horizontal orientations, to the ceiling, onto the floor, or from a truss. The MUB-USW-112 kit includes two M8 bolts/washers and two M8 knobs/washers. The bolts are recommended for fixed installations.

USW-112XP Rigging Points
MUB-USW-112 U-Bracket Load Ratings

One USW-112XP or USW-112P can be safely mounted with the MUB-USW-112 U-bracket at a 5:1 safety factor.
When mounting a USW-112XP with the U-bracket, the U-bracket must be secured to the mounting surface with one of the configurations shown in the table below.
Hole | Safety Factor |
---|---|
1/2-inch center hole | 5:1 |
Two 1/2-inch outer holes | 5:1 |
All four 1/4-inch corner holes | 5:1 |
Two 1/4-inch center holes | Not rated for mounting. These holes are for pole-mounting the MUB-USW-112 using a pole-mount adapter. |

Mounting Hole Locations

MUB-USW-112 Wall Mount, Horizontal

MUB-USW-112 Wall Mount, Vertical

MUB-USW-112 Ceiling Mount
Using the USW-112XP Pole Mount

The MPK-POLE-35MM-M20 (PN 40.010.973.01) provides an easy and efficient way to mount a loudspeaker (such as the ULTRA-X20XP) on top of the USW-112XP. It features a lift assist that provides approximately 40 lb of internal gas cylinder pneumatic lift.
The MPK-POLE-35MM-M20 features all steel shafts that telescope from 36.5–60 inches and employs a secure knob to hold it in a specific position. The lower end is 35 mm in diameter and has an M20 threaded lug to stabilize and make the connection to the USW-112XP pole mount more secure. The upper shaft includes the removable PAS-M8 Adapter Sleeve that fits the ULTRA-X20/22/23 M8 rigging point and a PAS-M20 Adapter Sleeve that fits internal 35 mm and M20 pole mount receptacles is available for other pole applications.
Caution
Due to the small footprint and light weight of the USW-112XP, to keep it stable, avoid extending the pole to the maximum height. Do not lift the ULTRA-X20XP higher than 44 inches from the top of the USW-112XP.

MPK-POLE with PAS-M8 in USW-112XP Pole Mount

MPK-POLE kit
MAPP System Design Tool

The MAPP System Design Tool is a powerful, cross-platform application for accurately predicting the coverage pattern, frequency response, phase response, impulse response, and SPL capability of individual or arrayed Meyer Sound loudspeakers.

MAPP System Design Tool
Whether planning for fixed installations or for tours with multiple venues, use MAPP to accurately predict the appropriate loudspeaker deployment for each job, complete with coverage data, system delay and equalization settings, rigging information, and detailed design illustrations. MAPP’s accurate, high-resolution predictions ensure that systems will perform as intended, thereby eliminating unexpected coverage problems and minimizing onsite adjustments.
The key to the accuracy of MAPP’s predictions is MeyerSound’s exhaustive database of loudspeaker measurements. Performance predictions for each loudspeaker are based on 3-dimensional, 65,000+ 1/48th-octave-band measurements taken in the MeyerSound anechoic chamber. The extraordinary consistency between Meyer Sound loudspeakers guarantees that predictions from MAPP will closely match their actual performance.
MAPP software allows for configuration of MeyerSound loudspeaker systems and definition of the environment in which they operate, including air temperature, pressure, humidity, and the location of prediction surfaces. Importing both CAD (.DXF) and Sketchup (.SKP) files containing detailed venue information to act as an anchor model to the prediction surfaces and a visual aid to facilitate prediction data interpretation is also possible.
Tip
See meyersound.com for support and more information about MAPP.
MAPP Capabilities

With MAPP, you can:
Simulate different loudspeaker configurations to refine system designs and determine the best coverage for intended audience areas
Model loudspeaker interactions to locate constructive and destructive interferences so that loudspeakers can be re-aimed and repositioned as necessary
Place microphones anywhere in the Model View space and predict loudspeaker frequency response, phase response, and sound pressure levels at each microphone position
Determine delay settings for fill loudspeakers using the Inverse Fast Fourier Transform and phase response feature
Preview the results of signal processing to determine optimum settings for the best system response
Automatically calculate load information for arrays to determine necessary minimum rigging capacity, front-to-back weight distribution, and center of gravity location
Generate and export system images and system PDF reports for client presentations
Synchronize GALAXY processor output channel settings in real-time with virtual or real GALAXY units, allowing in-the-field changes to be predicted during system alignments.
Galileo GALAXY Network Platform

The Galileo GALAXY Network Platform is a sophisticated loudspeaker management tool for controlling all MeyerSound speaker types. The GALAXY loudspeaker processor extends a high level of audio control in driving and aligning loudspeaker systems with multiple zones. It provides a powerful tool set for corrective equalization (EQ) and creative fine-tuning for a full range of applications from touring to cinema.
Users can readily program the GALAXY processor using Compass software running on a host computer or via the Compass Go application for the iPad. Connecting MAPP to the GALAXY processor will also allow the user to push output channel settings created in MAPP as a starting point. Compass Control Software includes custom-designed settings for each family of speakers, as well as to integrate families together. For example, the Product Integration feature matches the phase characteristics between Meyer speaker families to ensure the most coherent summation.
Processing tools for inputs and outputs include delay, parametric EQ and U-Shaping EQ. Output processing also includes polarity reversal, Low-Mid Beam Control (LMBC), atmospheric correction, and All Pass filters.
The built-in summing and delay matrices allow a user to easily assign gain and delay values, respectively, at each cross point. This capability greatly facilitates using one loudspeaker to satisfy multiple purposes.
Front panel controls let a user intuitively and quickly operate a GALAXY processor without a computer during live use.
The GALAXY 408, GALAXY 816 and GALAXY 816-AES3 processor versions have the same audio processing capability with different I/O. See www.meyersound.com to locate their datasheets for more information.
Meyer Sound Weather Protection

The Weather Protection option from Meyer Sound is intended to increase the useful life of Meyer Sound loudspeakers when they are installed outdoors and exposed to different and often harsh weather conditions. Our Weather Protection includes a penetrating treatment to raw wood, use of special primers, and plating on all steel parts used (or alternatively, the use of stainless steel hardware). Weather Protection is designed to prevent malfunctions caused by harsh operating environments and slows the accelerated wear and tear that occurs in outdoor environments.
When Is Weather Protection Advisable?

Weather Protection is strongly recommended for all permanent outdoor installations where loudspeakers are directly exposed to the elements. This includes desert and semi-arid climates, where protection against dust and sand is important, and where infrequent rainstorms can contribute to deterioration of loudspeaker components.
Weather Protection is also recommended when the loudspeakers are sheltered from direct exposure to precipitation but are nevertheless exposed to prolonged high humidity, fog or mist. Examples would be installations on covered outdoor terraces or pavilions
Weather Protection is further advisable for portable or touring systems when any significant outdoor use is anticipated. Even though standard procedures may call for using external protective measures, these are often not implemented in time to prevent moisture intrusions that could lead to premature performance degradation of the loudspeaker.
Climate Variation and Owner Maintenance

The wear and tear on a loudspeaker will vary significantly with different climatic conditions. For example, a weather protected loudspeaker installed in a sunlight-exposed location on an ocean pier will experience much harsher conditions than a loudspeaker in a similar installation that is shaded by trees and exposed only to rainfall. The constant exposure to direct UV radiation and salt air environment will cause a loudspeaker to wear more quickly than one with partial UV shielding and exposed only to freshwater moisture.
Wear can eventually affect the performance of the loudspeaker. It also affects aesthetics. For example, in salt air environments, the exterior grille can quickly show signs of oxidation, causing unsightly discoloration.
Apart from selecting suitable weather protection, the progress of wear and tear on the loudspeaker can be slowed by a regular schedule of inspection and cleaning. This maintenance is particularly necessary in harsh environments. Inspection and cleaning should include routine removal of any visible oxidation or environmental particulates, as these can accelerate metal corrosion or decay of the cabinet. If installed loudspeakers are not in use for an extended period, exterior protection or temporary removal and storage of the loudspeakers should be considered.
Benefits of Weather Protection

There are several benefits to selecting the Meyer Sound Weather Protection option:
Functionality - Weather Protection prolongs the service life of the loudspeaker by preventing premature degradation of internal components.
Safety - Weather Protection lessens the chance of electrical malfunctions or structural failures.
Warning
IT IS THE RESPONSIBILITY OF PURCHASERS/USERS/OPERATORS TO SELECT WEATHER PROTECTION WHEN APPROPRIATE FOR THEIR USE AND TO PERIODICALLY INSPECT THEIR LOUDSPEAKER INSTALLATIONS FOR ANY DETERIORATION THAT MAY LEAD TO SAFETY CONCERNS.
Aesthetics - Weather Protection slows wear and tear on the exterior of the loudspeaker in harsh conditions. Early signs of wear and tear on the exterior of the loudspeaker indicate over-exposure to the elements.
Standards Compliance - Weather Protection helps in meeting IP ratings for loudspeakers. IP ratings are an internationally recognized standard often used in installations involving our products. A further explanation of IP ratings is given in the IP Ratings.
Weather Protection Components

Standard Weather Protection

Meyer Sound designs toward an IP rating of IPX4 (see IP Ratings) for Standard Weather Protection, which includes the following components:
Wood treatment — Prior to cabinet manufacturing, the raw wood receives a special treatment that penetrates and stabilizes the wood fibers to withstand a wide range of temperatures and exposure to extreme humidity.
Cabinet finishing — The assembled cabinets receive a highly impervious finish that includes a sealing primer and a finishing topcoat. The coatings are applied on both surfaces, with one coat on the interior and two on the exterior. The final step is a two-part modified acrylic urethane similar to that used in military applications.
Driver treatment — All cone drivers are coated with a water-resistant sealant.
Exterior protection — Grille frames are coated to resist corrosion, and all components that mount to the cabinet use custom gaskets and stainless steel fasteners.
Removable rain hood — The rain hood is designed to shield connectors even in wind-driven rain.
Installation Practices

Meyer Sound assumes normal and accepted installation practices are used when installing Meyer Sound Loudspeakers outdoors. Deviation from such practices may cause weather protection to be ineffective and void the warranty for the loudspeaker.
Examples of unacceptable and acceptable installation practices include:
Loudspeakers installed outdoors should not face upward.
Loudspeakers with a rain hood should be installed in such a way that the rain hood opening is not facing any direction but down.
Meyer Sound-supplied rigging components should not be modified (for example, by drilling additional holes in a MUB for mounting to a wall). When an installer/integrator modifies a Meyer Sound-supplied rigging component to support their installation method, it is considered compromised and out of warranty.
All loudspeaker cabling must be installed with a "drip-loop" or equivalent method to ensure that rain/ water is NOT wicked toward the loudspeaker.
If in doubt about an installation method, contact Meyer Sound Technical Support for assistance.
Always discuss the environmental conditions of your Meyer Sound installation with your Sales Manager, and verify the availability of Weather Protection for your selected loudspeaker models. The Sales Manager, together with Technical Support, will verify the appropriate level of weather protection for the loudspeakers and related rigging hardware.
IP Ratings

IP stands for "Ingress Protection." The current format for expressing an IP rating is a 2-digit code. The first digit of an IP rating represents protection from solid objects. The second digit of an IP rating represents protection from water or moisture. The table below provides a chart of IP ratings and the corresponding definitions of the rating.
Note
IP ratings only apply to the "ENCLOSURE." A loudspeaker is considered an enclosure and as such we can apply an IP rating to it. Rigging hardware is not an enclosure and therefore IP ratings do not apply. Also, cable and cable-mount connectors used to connect to the loudspeaker are NOT part of the enclosure and therefore not part of the IP rating. Only the chassis-mounted part of the connector is considered part of the enclosure.
First Digit (Protection against solid objects) | Definition | Second Digit (Protection against liquids) | Definition |
---|---|---|---|
X | Characteristic numeral is not required to be specified. | X | Characteristic numeral is not required to be specified. |
0 | No protection | 0 | No protection |
1 | Protected against solid objects over 50mm. | 1 | Protected against vertically falling drops of water. |
2 | Protected against solid objects over 12 mm. | 2 | Protected against direct sprays up to 15° from the vertical. |
3 | Protected against solid objects over 2.5mm. | 3 | Protected against direct sprays up to 60° from the vertical |
4 | Protected against solid objects over 1 mm. | 4 | Protected against direct sprays from all directions. Limited ingress permitted |
5 | Protected against dust. Limited ingress permitted. | 5 | Protected against low-pressure jets of water from all directions. Limited ingress permitted. |
6 | Totally protected against dust. | 6 | Protected against strong jets of water from all directions. Limited ingress permitted. |
7 | Protected against the effect of temporary immersion between 15cm and 1m. | ||
8 | Protected against the effect of long-term submersion of 1m or more. |
Rain Hood

A weather-protected version of the USW-112XP is available with an included rain hood kit that safeguards the Phoenix connectors from the elements in fixed outdoor installations. The rain hood is made of durable, high-impact, black polycarbonate, as shown in the figures below. The weather-protected USW-112XP can be mounted vertically or horizontally. (For restrictions, see Permissible Orientations.)

Weather-Protected USW-112XP with Rain Hood Attached
Note
Weather-protected USW-112XP loudspeakers using the rain hood are rated IP56 for protection against solid objects and water intrusion. See Meyer Sound Weather Protection for details.

Close-up view of USW-112XP with Rain Hood
Rain Hood Installation

Attach the audio/power source Phoenix cable connector to the loudspeaker (not shown).
Secure the rain hood to the user panel with the two 6-32 x 0.38-inch pan head screws provided, as shown in the first figure below. The recommended torque value for rain hood screws is 8 in-lbs (0.9 N·m).
Note
The rain hood comes with the gasket attached, as shown in the second figure below.

USW-112XP with Rain Hood Assembly
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Rain Hood with Gasket Attached
Permissible Orientations

Caution
When mounting the loudspeaker, ensure that the cables will exit from the bottom of the loudspeaker when the rain hood is installed. There is only one permissible vertical orientation (handle on top, as shown in the first figure below), and one permissible horizontal orientation (handle to the left when viewing it from the rear, as shown in the second figure below).

Only Permissible Horizontal Orientation

Rain Hood with Gasket Attached
Downtilt and Uptilt

Caution
The weather-protected USW-112XP loudspeaker must be mounted with a 0° tilt, or preferably with a slight downtilt with the cables exiting from the bottom. This angle shields the driver from the elements and does not allow water to accumulate in the cabinet. Position the speakers as shown in the figures below. Do not tilt the cabinet up, as the drivers and cabinet will accumulate water.

Downtilt Permissible (top); Uptilt NOT Permissible (bottom)


Downtilt Permissible (left); Uptilt NOT Permissible (right)
Horizontal Tilt

Caution
If tilting the loudspeaker from 0° horizontal, ensure that the horizontal tilt leaves the port below the electronics, as shown in the figure below, so that water does not enter from the port and accumulate in the cabinet.

Horizontal Tilt-Away from Electronics Permissible (top); Horizontal Tilt-Toward Electronics NOT Permissible (bottom)
Assembling Phoenix-to-Phoenix Loudspeaker Cables

When connecting loudspeakers equipped with Phoenix connectors to the MPS-488HPp power supply, you need a Phoenix 5-pin female to Phoenix 5-pin female cable. The following procedure documents how to assemble this cable.
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Assembled Phoenix-to-Phoenix Cable
If the cable has not yet been stripped, strip one end of the cable. Strip the outer shielding by 1 inch and then strip the black, red, blue, and white wires by 0.275 inch.
Insert the five exposed conductors into the five cable holes in a Phoenix 5-pin female cable mount connector. Use the following wiring scheme.
Pin Destinations for Phoenix 5-Pin Female Cable Mount Connector
Secure the conductors by tightening the five screws in the Phoenix cable mount connector. Screws should be torqued to 5–6 Nm(4.4–5.3 In-Lbs).
Caution
Screws should not be inserted into the Phoenix connector while the connector rests in a mating plug. Doing so will damage the contacts. During assembly, the Phoenix connector should only be held in place externally.
Repeat the previous steps and attach the other end of the cable to another Phoenix 5-pin female cable mount connector.
Verify the wiring polarity is correct for both cable ends
USW-112XP Loudspeaker Dimensions


USW-112XP Rain Hood Dimensions

The USW-112XP rain hood is smaller in height than the handle and does not protrude beyond the slanted user panel area.

MUB-USW-112 Dimensions

