Meyer Sound Documentation

All components in an audio system (self-powered loudspeakers, mixing consoles, and processors) must be properly connected to an AC power distribution system, ensuring that AC line polarity is preserved and that all grounding points are connected to a single node or common point using the same cable gauge (or larger) as the neutral and line cables.

120V AC, 3-Phase Wye System (Single Line) -- Line-Neutral-Earth/Ground

The figure below illustrates a basic 120 V AC, 3-phase Wye distribution system with the loudspeaker load distributed across all three phases, with each loudspeaker connected to a single line and common neutral and earth/ground lines. This system delivers 120 V AC to each loudspeaker.

120 V AC, 3-Phase Wye System (Single Line to Loudspeakers)

120V AC, 3-Phase Wye System (Two Lines) -- Line-Line-Earth/Ground

The figure below illustrates a 120 V AC, 3-phase Wye distribution system with each loudspeaker connected to two lines and a common earth/ground line. This configuration is possible because ULTRA-X40/42 tolerates elevated voltages from the ground line and does not require a neutral line. This system delivers 208 V AC to each loudspeaker.

120 V AC, 3-Phase Wye System (Two Lines to Loudspeakers)

Tip

The 120 V AC, 3-phase Wye system with two lines is recommended because it allows loudspeakers to draw less current than with single-line systems, thereby reducing voltage drop due to cable resistance. It also excludes the potential of varying ground to neutral voltages producing an audible hum.

230V AC, 3-Phase Wye System (Single Line) -- Line-Neutral-Earth/Ground

The figure below illustrates a basic 230 V AC, 3-phase Wye distribution system with the loudspeaker load distributed across all three phases, with each loudspeaker connected to a single line and common neutral and earth/ground lines. This system delivers 230 V AC to each loudspeaker.

230 V AC, 3-Phase Wye System (Single Line to Loudspeakers)

Caution

For 230 V AC, 3-phase Wye systems, never connect two lines to the AC input of ULTRA-X40/42, as the resulting voltage would exceed the upper voltage limit (275 V AC) and will damage the loudspeaker.

The ULTRA-X40/42 user panel includes two powerCON 20 connectors one for AC Input (blue) and one for AC Loop Output (gray), as shown in the figure below.

AC Input (Left) and AC Loop Output (Right) Connectors

AC Input (Blue)

The blue AC Input connector supplies power to ULTRA-X40/42. The 3-conductor powerCON 20 is rated at 20 A and uses a locking connector that prevents accidental disconnections. A 10-foot AC power cable, rated at 15 A, is included with each loudspeaker. If the included AC power cable is replaced, make sure to use a cable with the appropriate power plug (on the other end) for the region where the unit will be operated. ULTRA-X40/42 requires a grounded outlet. To operate safely and effectively, it is extremely important that the entire system be properly grounded.

The AC Input connector also supplies power to any additional loudspeakers connected to the loudspeaker’s gray Loop Output connector.

Caution

When looping AC power for loudspeakers, do not exceed the current capability of the AC Input connector (20 A) or the included AC power cable (15 A). Consider the total current draw for all loudspeakers on the circuit, including the first loudspeaker.

AC Loop Output (Gray)

The gray AC Loop Output connector allows multiple ULTRA-X40/42 to be looped and powered from a single power source. The 3-conductor powerCON 20 is rated at 20 A and uses a locking connector that prevents accidental disconnections. For applications that require multiple ULTRA-X40/42, connect the AC Loop Output of the first loudspeaker to the AC Input of the second loudspeaker, and so forth.

The maximum number of loudspeakers that can be looped from the AC Loop Output connector is determined by the voltage of the power source, the current draw of the looped loudspeakers, the circuit breaker rating, and the rating of the AC power cable connected to the first ULTRA-X40/42 loudspeaker, as described in the table below.

Table 1. Maximum ULTRA-X40/42s that Can Be Looped with AC Power

Circuit Breaker/ Connector Rating	115 V AC	230 V AC	100 V AC
15 A	6 looped (7 total)	13 looped (14 total)	5 looped (6 total)
20 A	9 looped (10 total)	18 looped (19 total)	8 looped (9 total)

Note

Current draw for ULTRA-X40/42 is dynamic and fluctuates as operating levels change. The indicated number of loudspeakers that can be looped assumes that operating levels are normal and not such that loudspeakers are constantly limiting.

ULTRA-X40/42 ships with a gray powerCON 20 cable mount connector, rated at 20 A, for assembling AC looping cables. Assembled 1-meter AC looping cables (PN 28.115.032.03) are also available from Meyer Sound.

ULTRA-X40/42 ships with a gray powerCON 20 cable mount connector, rated at 20 A, for assembling AC looping cables, as shown in the figure below. The pins on the powerCON 20 cable mount connector are labeled as follows:

powerCON20Cable Mount Connector

How AC power cables are wired is determined by the type of AC power distribution system used (seeAC Power Distribution). When wiring AC power cables for single-line systems, use one of the wiring schemes shown in the figure below and described in the table below:

AC Wiring Scheme

ULTRA-X40/42 operates as intended when receiving AC voltage within the following range:

If the voltage drops below 90V, the loudspeaker uses stored power to continue operating temporarily; the loudspeaker powers off if the voltage does not return to its operating range.

If the voltage rises above 275V, the power supply could become damaged.

Current draw for loudspeakers is dynamic and fluctuates as operating levels change. Because different cables and circuit breakers heat up at varying rates, it is important to understand the following types of current ratings and how they affect circuit breaker and cable specifications.

Use the information in Table 3 to select the appropriate cable gauge and circuit breaker ratings for the system’s operating voltage.

The minimum electrical service amperage required by a loudspeaker system is the sum of the maximum long-term continuous current for all loudspeakers. An additional 30 percent above the combined Maximum Long-Term Continuous amperages is recommended to prevent peak voltage drops at the service entry.

ULTRA-X40/42’s IntelligentAC™ power supply automatically selects the correct operating voltage (allowing the loudspeaker to be used internationally without manually setting voltage switches), eliminates high inrush currents with soft-start power up, suppresses high-voltage transients up to several kilovolts, filters common mode and differential mode radio frequencies (EMI), and sustains operation temporarily during low-voltage periods.

Powering on ULTRA-X40|42

When powering on ULTRA-X40/42, the following startup events take place over several seconds.

1. Audio output is muted.

2. Voltage is detected and the power supply mode is automatically adjusted as necessary.

3. The power supply ramps up.

4. On the user panel, the On/Status LED flashes multiple colors successively.

5. The On/Status LED turns solid green, indicating the loudspeaker is unmuted and ready to output audio.

Caution

If the On/Status LED does not turn solid green, or the ULTRA-X40/42 does not output audio after 10 seconds, remove AC power immediately and verify that the voltage is within the required range. If the problem persists, contact Meyer Sound Technical Support.

Make sure to observe the following important electrical and safety guidelines.

ULTRA-X40/42 is available with XLR 5-pin, as shown in the first figure below, or 3-pin connectors, as shown in the second figure below, for audio Input and audio Loop output. XLR 5-pin connectors accommodate both balanced audio and RMS signals.

XLR 5-Pin Audio Connectors, Input and Loop Output

XLR 3-Pin Audio Connectors, Input and Loop Output

Audio Input (XLR 3-Pin or 5-Pin Female)

The XLR 3-pin or 5-pin female Input connector accepts balanced audio signals with an input impedance of 10 kΩ. The connector uses the following wiring scheme:

• Pin 1 — 1 kΩ to chassis and earth ground (ESD clamped)

• Pin 2 — Signal (+)

• Pin 3 — Signal (–)

• Pin 4 — RMS (polarity insensitive)

• Pin 5 — RMS (polarity insensitive)

• Case — Earth (AC) ground and chassis

Note

Pins 4 and 5 (RMS) are included only with XLR 5-pin connectors.

Pins 2 and 3 carry the input as a differential signal. Pin 1 is connected to earth through a 1 kΩ, 1000 pF, 15 V clamped network. This circuitry provides virtual ground lift for audio frequencies while allowing unwanted signals to bleed to ground. Make sure to use balanced XLR audio cables with pins 1–3 connected on both ends. Telescopic grounding is not recommended and shorting an input connector pin to the case may cause a ground loop, resulting in hum.

Tip

If the loudspeaker produces unwanted noise or hiss, disconnect its input cable. If the noise stops, there is most likely nothing wrong with the loudspeaker. To locate the source of the noise, check the source audio, AC power, and electrical ground.

Audio Loop Output (XLR 3-Pin or 5-Pin Male)

The XLR 3-pin or 5-pin male Loop output connector allows multiple loudspeakers to be looped from a single audio source. The Loop output connector uses the same wiring scheme as the Input connector (see Audio Input (XLR 3-Pin or 5-Pin Female). For applications that require multiple ULTRA-X40/42, connect the Loop output of the first loudspeaker to the Input of the second loudspeaker, and so forth.

Note

The Loop output connector is wired in parallel to the Input connector and transmits the unbuffered source signal even when the loudspeaker is powered off.

Calculating Load Impedance for Looped Audio Signals

To avoid distortion when looping multiple loudspeakers, make sure the source device can drive the total load impedance of the looped loudspeakers. In addition, the source device must be capable of delivering approximately 20 dBV (10 V rms into 600 Ω) to yield the maximum SPL over the operating bandwidth of the loudspeakers.

To calculate the load impedance for the looped loudspeakers, divide 10 kΩ (the input impedance for a single loudspeaker) by the number of looped loudspeakers. For example, the load impedance for 10 ULTRA-X40/42 is 1000 Ω (10 kΩ/ 10). To drive this number of looped loudspeakers, the source device should have an output impedance of 100 Ω or less. This same rule applies when looping ULTRA-X40/42 with other Meyer Sound self-powered loudspeakers.

Note

Most source devices are capable of driving loads no less than 10 times their output impedance.

Tip

Audio outputs from Meyer Sound’s loudspeaker GALAXY Network Platform have an output impedance of 50 ohms. Each output can drive up to 20 Meyer Sound (10 kΩ) loudspeakers without distortion.

Caution

Make sure that all cabling for looped loudspeakers is wired correctly (Pin 1 to Pin 1, Pin 2 to Pin 2, and so forth) to prevent the polarity from being reversed. If one or more loudspeakers in a system have reversed polarity, frequency response and coverage will be significantly degraded.

The ULTRA-X40/42 employs Meyer Sound’s advanced TruPower® limiting. Conventional limiters assume a constant driver impedance and set the limiting threshold by measuring voltage alone. This method is inaccurate, because driver impedances change as frequency content in the source material changes, and as thermal values for the loudspeaker’s voice coil and magnet vary. Consequently, conventional limiters often begin limiting prematurely, which reduces system headroom and dynamic range.

In contrast, TruPower limiting anticipates varying driver impedances by measuring both current and voltage to compute the actual power dissipation in the voice coil. This approach improves performance, both before and during limiting, by allowing the driver to produce the maximum SPL across its entire frequency range, while also retaining signal peaks. TruPower limiting also eliminates power compression at high levels over lengthy periods, which helps regulate voice coil temperatures, thereby extending the life of the driver.

The low- and high-frequency drivers for ULTRA-X40/42 are powered by separate amplifier channels, each with their own limiter. Limiting activity is indicated with two Limit LEDs on the user panel. The top Limit LED, shown in the figure below, indicates limiting for the high-frequency channel and the bottom Limit LED indicates limiting for the low-frequency channel.

ULTRA-X40/42 Limit LEDs

When engaged, the limiters not only protect the drivers but also prevent signal peaks from causing excessive distortion in the amplifier channels, thereby preserving headroom and maintaining smooth frequency response at high levels.

When levels return to normal, below the limiter thresholds, limiting ceases.

ULTRA-X40/42 performs within its acoustical specifications at normal temperatures when the Limit LEDs are unlit, or when the LEDs are lit for 2 seconds or less and then turn off for at least 1 second. If the LEDs remain lit for longer than

3 seconds, the loudspeaker enters hard limiting where:

AMPLIFIER COOLING SYSTEM

The ULTRA-X40/42 loudspeaker is convection cooled. The amplifier’s heat sink provides natural convection cooling from the air flowing near its fins.

ON/STATUS LED

During normal operation, when ULTRA-X40/42 is powered on, the On/Status LED is solid green. If the loudspeaker encounters a hardware fault, or the unit begins to overheat, the LED flashes red. In some instances, the loudspeaker will continue to output audio while the LED flashes red, though with a reduction in the limiter threshold and acoustic output to protect the loudspeaker.

If a loudspeaker is overheating (for RMS-equipped loudspeakers, you can verify this situation in Compass RMS), a reduction in SPL may be necessary. If after a reduction in SPL and an appropriate cooling period the On/ Status LED continues to flash red (does not return to solid green), contact Meyer Sound Technical Support.

If the On/Status LED flashes red and the loudspeaker does not output audio, contact Meyer Sound Technical Support immediately.

An ULTRA-X40/42 loudspeaker system can be deployed with Meyer Sound self-powered low frequency control elements (see [→ _bookmark46]Table 4). These subwoofers achieve very low frequency responses and extend the system response appreciably, increasing the overall acoustic power of the system in the lowest frequencies.

The ideal ratio of ULTRA-X40/42 loudspeakers to low frequency control element depends on the following variables:

For most applications, the ratios in the table below should yield good results.

ADDING SUBWOOFERS BY DAISY-CHAINING

Full-range signals can be connected directly to

Meyer Sound self-powered loudspeakers because the loudspeakers have built-in active crossovers. Subwoofers can be added to an ULTRA-X40/42 system by simply daisy-chaining them to the ULTRA-X40/42 loudspeakers.

To daisy-chain the suggested number of ULTRA-X40/42 loudspeakers for your subwoofer (see Table 1).

When ULTRA-X40/42 loudspeakers are coplanar, or they are very close together, about four to six feet like in the case of pole mounting, the phase response will work well in the area of interaction and the result will be a fairly flat frequency response. However, the response will show an increase in the 60–200 Hz range where the response of the loudspeakers overlaps.

USING A PROCESSOR

In larger systems when individual control for the

ULTRA-X40/42 and subwoofers are needed or desired, if the ULTRA-X40/42 loudspeakers and subwoofer are more than six feet apart, or if a delay is required between them, use a measurement system like Meyer Sound’s SIM to determine appropriate delay and polarity settings.

The ULTRA-X40/42 loudspeaker is convection cooled. The amplifier’s heat sink provides natural convection cooling from the air flowing near its fins.

During normal operation, when ULTRA-X40/42 is powered on, the On/Status LED is solid green. If the loudspeaker encounters a hardware fault, or the unit begins to overheat, the LED flashes red. In some instances, the loudspeaker will continue to output audio while the LED flashes red, though with a reduction in the limiter threshold and acoustic output to protect the loudspeaker.

If a loudspeaker is overheating (for RMS-equipped loudspeakers, you can verify this situation in Compass RMS), a reduction in SPL may be necessary. If after a reduction in SPL and an appropriate cooling period the On/ Status LED continues to flash red (does not return to solid green), contact Meyer Sound Technical Support.

If the On/Status LED flashes red and the loudspeaker does not output audio, contact Meyer Sound Technical Support immediately.

Full-range signals can be connected directly to

Meyer Sound self-powered loudspeakers because the loudspeakers have built-in active crossovers. Subwoofers can be added to an ULTRA-X40/42 system by simply daisy-chaining them to the ULTRA-X40/42 loudspeakers.

To daisy-chain the suggested number of ULTRA-X40/42 loudspeakers for your subwoofer (see Table 1).

When ULTRA-X40/42 loudspeakers are coplanar, or they are very close together, about four to six feet like in the case of pole mounting, the phase response will work well in the area of interaction and the result will be a fairly flat frequency response. However, the response will show an increase in the 60–200 Hz range where the response of the loudspeakers overlaps.

In larger systems when individual control for theULTRA-X40/42 and subwoofers are needed or desired, if the ULTRA-X40/42 loudspeakers and subwoofer are more than six feet apart, or if a delay is required between them, use a measurement system like Meyer Sound’s SIM to determine appropriate delay and polarity settings.

When installing Meyer Sound loudspeakers and subwoofers, the following precautions should always be observed:

The top and bottom faces for the ULTRA-X40/42 cabinet include high-strength, corrosion-resistant stainless steel points that provide M8 x 1.25 threaded holes for easy connection to QuickFly rigging and third-party mounting options.

ULTRA-X40/42 Rigging Points

Meyer Sound offers many rigging options, as listed in the table below, that facilitate a wide variety of configurations.

The ULTRA-X40/42 may be rotated for increased installation flexibility. However, care must be taken so as to not damage the loudspeaker.

The ULTRA-X40 loudspeaker can be suspended simply using M8 eye bolts. A minimum of two eye bolts are required when suspending a single loudspeaker. The use of two eye bolts provides the added flexibility of aiming and tilting the loudspeaker for targeted coverage. Meyer Sound offers a kit with 2 black-coated M8 x 13 mm eye bolts (PN 40.287.057.01).

ULTRA-X40 with Two Eye Bolts

The MPK-POLE-35MM-M20 (PN 40.010.973.01) provides an easy and efficient way to mount the ULTRA-X40/42 on top of a 750-LFC (or 900-LFC). 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 upper shaft includes the removable PAS-M20 Adapter Sleeve that fits the ULTRA-X40/42 internal 35 mm and M20 pole mount receptacle to make this connection more robust.

Meyer Sound offers the PAS-M20-35MM with M20 slug adapter sleeve separately (PN 40.010.974.01) for use with third-party 35 mm poles.

MPK-POLE-35MM-M20 kit

The MPK-POLE features a lift assist that provides approximately 40 lb of internal gas cylinder pneumatic lift. The lower end of the pole is 35 mm in diameter and has an M20 threaded lug for stability that can be removed if necessary. In addition, the MPK-POLE-35MM-M20 kit includes an adapter for converting the bottom diameter from 35 mm to 38 mm.

The pole can be used without the lug for loudspeakers that have 35 mm cup mounts without M20 threads, or the 35 mm to 38 mm adapter may be slipped onto the bottom for loudspeakers that have 38 mm cups.

Pole with 35 mm to 38 mm Adapter Sleeve Attached

Meyer Sound recommends that a 750-LFC (or 900-LFC) be upgraded with the 35 mm/M20 internal pole mount cup (PN 40.271.016.02) for a more stable connection. This part is included with the MPK-POLE kit.

35 mm/M20 Internal Pole Mount Cup (PN 40.271.016.02)

The PAS-M20-35MM Adapter is designed to securely fit into the M20 thread of the ULTRA-X4x integral pole mount. The separate knob on the adapter tightens it to the pole. (It can also be secured onto any other standard 35 mm pole.)

The PAS-M20-35MM may be independently (apart from the pole) threaded into the ULTRA-X4x, and then the loudspeaker/PAS-M20-35MM Adapter combination mounted onto a pole that is already secured in the subwoofer. The loudspeaker may be aimed horizontally, and the PAS-M20-35MM knob tightened.

Inserting the PAS-M20-35MM Adapter Independently

Settling Loudspeaker/Adapter Combination onto Pole

Alternatively, the PAS-M20-35MM Adapter can be secured to the pole first and then the two items jointly inserted into the subwoofer mounting cup and tightened. The loudspeaker may then be lifted onto the PAS-M-20-35MM adapter and rotated until the M20 thread is tightened within the loudspeaker’s mounting cup. Loosening the PAS-M20-35MM Adapter knob after the loudspeaker/ PAS-M20-35MM Adapter M8 connection is secure can again facilitate horizontal aiming of the loudspeaker.

Rotating Loudspeaker onto PAS-M20-35MM

The MYA-X40 mounting yoke (PN 40.287.039.01) suspends a single ULTRA-X40/42 loudspeaker and supports a wide range of horizontal and vertical adjustments. The yoke attaches to the top of the loudspeaker using three of the six rig nuts. The kit includes three M8 bolts and three M8 knobs. The bolts are recommended for fixed installations. A hanging clamp and steel safety cable (not included) are required to suspend the MYA-X40 mounting yoke.

MYA-X40 Mounting Yoke

ULTRA-X40 in the MYA-X40 Yoke Mount

In addition, the yoke may be mounted onto a 35 mm pole using the optional MSA-STAND Adapter Cup 35MM (PN 40.086.013.01) to facilitate easy panning and tilting.

40: ULTRA-X40 in the MYA-X40 Yoke Mount on Pole using the optional MSA-STAND Adapter Cup 35MM

Optional MSA-STAND Adapter Cup 35MM

THE MUB-X40 U-BRACKET

The MUB-X40 U-Bracket (PN 40.287.055.01) allows a single ULTRA-X40/42 loudspeaker to be mounted to a wall in either vertical or horizontal orientations to the ceiling, onto the floor, or on top of a pole. Mounting the MUB-X40 U-Bracket onto a pole requires a pole mount adapter, such as the 35MM pole stand adapter or the MSA-STAND adapter cup. The MUB-X40 kit includes two M8 bolts, two M8 knobs, and a 35 mm diameter, M20 to M8 thread size reducer. The bolts are recommended for fixed installations.

MUB-X40 U-Bracket (left) with Thread Reducer M20 to M8 (35MM) (right)

The reducer is needed to convert the cabinet's bottom built-in pole mount M20 internal threads to M8 size to install the MUB-X40. The Thread Reducer M20 to M8 35MM can be installed and removed without the need of tools, and it can be conveniently transported on the M8 stud located on one side of the MUB-X40. The thread reducer is also available separately (PN 40.010.540.01).

Converting ULTRA-X40/42 Cabinet to M8 size with Thread Reducer M20 to M8 (35 MM).

MUB-X40 U-Bracket Load Ratings

One ULTRA-X40/42 can be safely mounted with the MUB-X40 U-Bracket at a 5:1 safety factor.

When mounting an ULTRA-X40/42 with the MUB-X40 U-Bracket, the U-Bracket must be secured to the mounting surface with one of the configurations shown in [→ _bookmark72]Table 6 (for hole locations, see [→ _bookmark73]Figure 44 on page 36.

Table 7. Hole Mounting Configurations Hole Safety

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-X40 using a pole-mount adapter.

MUB-X40 Mounting Hole Configuration Locations

MUB-X40 Wall Mount, Horizontal

MUB-X40 Wall Mount, Vertical

MUB-X40 Ceiling Mount

MUB-X40 Pole Mounted using the 35MM Pole Stand Adapter

35MM Pole Stand Adapter

The MTC-X40 Top Channel kit (PN 40.287.130.01) includes a pinnable link in a channel that mounts directly to the ULTRA-X40/42 rig nuts or into an MCP plate. It supports pick-up of up to three ULTRA-X40/42 loudspeakers from a single point using the two included lock pins and 3/8-inch black shackle. The MTC-X40 Top Channel attaches to the speaker or to an MCP50-X40 or MCP70-X40 plate with two M8 bolts.

MTC-X40 Top Channel Kit Installed at Top of Cab

The versatile configuration of the channel and link, with the ability to slide the pinnable link within the channel, facilitates 9 different top pickup points. This flexibility allows for approximately +10° to –30° tilting of a loudspeaker that hangs from a single point.

MTC-X40 Pickup Points

Using multiple versions of this kit (together with the Thread Reducer M20 to M8 35MM part sold separately) allows the user to create two- and three-loudspeaker angled configurations.

Attaching MTC-X40 to Bottom

In the example figure below, one Thread Reducer M20 to M8 35MM is required for the upper loudspeaker cabinet.

Example of two MTC-X40 Top Channels linking speakers at a 33° angle with a third MTC-X40 channel on top for pickup point.

Three-ULTRA-X40/42 Cluster using MTC-X40s requires pullback cable

Table 8. MTC-X40 Link Splay Angle Illustrations

Channel and Link Splay Angles

Meyer Sound offers two cluster plate versions: the MCP50-X40 Cluster Plate (PN 40.287.100.01), which when used in pairs, facilitates installation of up to three ULTRA-X40/42 loudspeakers in both horizontal and vertical clusters at variable splay angles between 10° and 50° in 5° increments, and the MCP70-X40 Cluster Plate (PN 40.287.400.01) that supports splay angles between 40° and 70°, also in 5° degree increments.

MCP70-X40 Cluster Plate (M8 knobs in transport positions)

MCP70-X40 Cluster Plate (M8 knobs in transport positions)

These kits include four M8 bolts and four M8 knobs. The bolts are recommended for fixed installations, while the knobs are for portable applications. The MCP plates include four threaded positions to hold the M8 knobs during transport.

Using these cluster plates, along with the MTC-X40 Top Channel, or the MTB-X40 Top Bracket (see MTB-X40 Top Bracket, users have the ability to create horizontal and vertical two and three-speaker clusters.

Even splay angles are obtained by using symmetric holes on either side; odd splay angles use a wider position hole on one side of the cluster plate. See Table 8 for examples.

MCP50-X40 Cluster Plate shown in a 50° horizontal splay angle, two-loudspeaker cluster with MTC-X40 Top Channel on top

Figure 1.

MCP70-X40 Cluster Plate shown in a 70° horizontal splay angle, two-loudspeaker cluster with MTC-X40 Top Channel on top

The table below provides illustrations of the type of splay angle configurations possible with two- and three-loudspeaker, horizontal and vertical configurations.

Four MCP50-x40 Cluster Plates shown set to 50° horizontal splay angles with MTC-X40 Top Channel for pick up point on center loudspeaker

Table 9. MCP50-X40 and MCP70-X40 Splay Angle Illustrations

MCP50-X40 Cluster Plate Examples	MCP70-X40 Cluster Plate Examples

The MTB-X40 Top Bracket (PN 40.287.150.01) is a heavy duty, U-bracket style accessory that facilitates mounting of up to three ULTRA-X40/42 loudspeakers from a ceiling or truss. The kit includes four M8 bolts, and four M8 knobs.

MTB-X40 Top Bracket

The bolts are recommended for fixed installations, while the knobs are for portable applications.

The design supports from 5° to 25° of downtilt in 5° increments (Figure 61). It supports 5° of uptilt (Figure 63). It also enables mounting of a single ULTRA-X40/42 onto the floor for front-fills.

MTB-X40 Top Bracket set at 25° downtilt

MTB-X40 Top Bracket set at 0°

MTB-X40 Top Bracket set at 5° uptilt

The sturdy MTB-X40 Top Bracket can support up to three ULTRA-X40/42 loudspeakers in a vertical cluster (Figure 64 and Figure 65) when used in conjunction with either of the MCP50-X40 or the MCP70-X40 Cluster Plates. Two plates (one kit) are required for two-speaker clusters. Four plates (two kits) are required for three-speaker clusters.

MCP50-X40 Cluster Plate creates a 50° vertical splay angle cluster with the MTB-X40 Top Bracket on top set at 10° angle

MCP70-X40 Cluster Plate creates a 70° vertical splay angle cluster with the MTB-X40 Top Bracket on top set at 10° angle

The splay angles created by the cluster plate configurations as illustrated in Table 8 apply to vertical clusters as well. Figure 66, Figure 67 and Figure 68 provide representative drawings in the vertical orientation to illustrate.

MCP50-X40 Cluster Plate in 10° vertical splay angle

MCP50-X40 Cluster Plate in 15° vertical splay angle

MCP50-X40 Cluster Plate in 50° vertical splay angle

MTB-X40 (top side) mounting hole options

Three-ULTRA-X40 vertical cluster angles

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.

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.

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.

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.

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.

There are several benefits to selecting the Meyer Sound Weather Protection option:

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:

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 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.

The ULTRA-X40/42 rigid removable rain hood is easily attached and removed with the included four screws, as shown in the figure below.

ULTRA-X40/42 with Rigid Rain Hood in Proper Vertical Orientation (left), Proper Horizontal Orientation (top right) and Correct Interior Cable Routing Illustration (bottom right)

The ULTRA-X40/42 collapsible rain hood is installed on the unit when shipped. Four screws secure its frame permanently into place, as shown in the figure below. When using the rain hood, the loudspeaker has only one possible vertical and one possible horizontal position, as all cables must exit from the lower end of the loudspeaker.

ULTRA-X40/42 with collapsible rain hood in vertical (left) and horizontal (right) orientations