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.

120 V 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)

120 V 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 the 750-LFC loudspeaker 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.

230 V 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 Amie, as the resulting voltage would exceed the upper voltage limit (275 V AC) and will damage the loudspeaker.

The 750-LFC user panel includes two powerCON 20 connectors, as shown in the figure below, one for AC Input (blue) and one for AC Loop Output (gray).

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

AC Input (Blue)

The blue AC Input connector supplies power to the 750-LFC loudspeaker. 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 you replace the included AC power cable, make sure to use a cable with the appropriate power plug (on the other end) for the area in which you will operate the loudspeaker. The 750-LFC 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. See AC Loop Output (Gray) for more information.

AC Loop Output (Gray)

The gray AC Loop Output connector allows multiple 750-LFC loudspeakers 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 750-LFC loudspeakers, 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 750-LFC loudspeaker, as shown in the table below.

Table 1. Maximum 750-LFCs that Can Be Looped with AC Power

Circuit Breaker/ Connector Rating	115 V AC	230 V AC	100 V AC
15 A / 16 A	1 looped (2 total)	4 looped (5 total)	1 looped (2 total)
20 A	2 looped (3 total)	6 looped (7 total)	2 looped (3 total)

Note

Current draw for the 750-LFC loudspeaker 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.

The 750-LFC loudspeaker ships with a gray powerCON 20 cable mount connector, rated at 20 A, for assembling AC looping cables. Assembled AC looping cables are also available from Meyer Sound [PN 28.115.032.03: 3.2 ft (1 m), 13 AWG (2.5 mm2)].

The pins on the powerCON 20 cable mount connector are labeled as follows:

powerCON 20 Cable Mount Connector

How AC power cables are wired is determined by the type of AC power distribution system used (see AC Power Distribution). When wiring AC power cables for single-line systems, use one of the following wiring schemes:

The 750-LFC loudspeaker operates as intended when receiving AC voltage within the following range:

If the voltage drops below 90 V, 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 275 V, 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 provided in the table below as a guide for selecting the gauge of cables and the 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.

The 750-LFC loudspeaker’s Intelligent AC™ power supply automatically:

Powering on the 750-LFC Loudspeaker

When powering on the 750-LFC loudspeaker, 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 Active/Status LED flashes multiple colors successively.

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

Caution

If the Active/Status LED does not turn solid green, or the 750-LFC loudspeaker 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.

The optional MDM-832 Distribution Module simplifies installation by using regular or composite cables to route AC power, balanced audio, and RMS to multiple LINA and 750-LFC units. This approach reduces setup and tear-down time for portable systems, and cable clutter for fixed installations.

Meyer Sound offers the MDM Load Calculator program that estimates AC power and AC load. This program helps users design the AC distribution system using the MDM-832 (or the larger MDM-5000) distribution modules.

The MDM Load Calculator program and the MDM-832 Operating Instructions (which includes information for the MDM-832 and MDM-5000) are available for download on the Meyer Sound website: meyersound.com/product/mdm/#software

The 750-LFC is available with XLR 5-pin (Figure 14) or 3-pin connectors, shown in the figures 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 750-LFC loudspeakers, 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 ten 750-LFC loudspeakers 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 750-LFC units 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 Galileo GALAXY Network Platform are rated at 50 Ω. This rating allows each output to drive up to 20 Meyer Sound (10 kΩ) loudspeakers without distortion.

Caution

Make sure that all cables for looped loudspeakers are 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

Two cable rings, shown in the figure below, are provided on the rear of the 750-LFC cabinet. Power and audio cables should be tied off to the rings to reduce strain on the cables and prevent damage to them during installation.

Cables Tied Off to Cable Ring

750-LFC loudspeakers employ 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.

LF Limit LED

The 750-LFC low-frequency driver is powered by two amplifier channels, one for each voice coil, which are routed to a single limiter. When a safe power level is exceeded in either channel, limiting is engaged for both channels and the LF Limit LED ([→ _bookmark30]Figure 15) lights on the user panel (the HF Limit LED is disabled for the 750-LFC).

750-LFC Limit LEDs (HF LED Disabled)

When engaged, the limiter not only protects the driver but also prevents 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 threshold—limiting ceases.

The 750-LFC loudspeaker performs within its acoustical specifications at normal temperatures when the LF Limit LED is unlit, or when the LED is lit for 2 seconds or less and then turns off for at least 1 second. If the LED remains lit for longer than 3 seconds, the loudspeaker enters hard limiting where:

• Increases to the input level have no effect

• Distortion increases due to clipping

• Drivers are subjected to excessive heat and excursion, thereby compromising their lifespan

Caution

The Limit LED indicates when a safe, optimum level is exceeded. If a 750-LFC loudspeaker system begins to limit before reaching the desired SPL, consider adding more units to the system.

The 750-LFC loudspeaker employs natural convection in its cooling system. The amplifier’s heat sink provides natural convection cooling from the air flowing near its fins. When exposed to high ambient temperatures or when driven continuously at high output levels, an ultra-low-noise, variable-speed fan circulates air internally to keep the 750-LFC cabinet at a safe operating temperature.

During normal operation, when the 750-LFC 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 thresholds (and gain) 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.

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

The table below summarizes the available rigging options for the 750-LFC loudspeaker. For complete information about rigging hardware, including dimensions, weight, configuration, and load ratings, refer to the MG-MINA/LINA/750-LFC Assembly Guide (PN 05.207.101.02).

Rigging Example, Mixed Array with 750-LFCs and LINAs

750-LFC loudspeakers can be ground-stacked up to three units high, with or without the MRK-750 rigging kit. Protective plastic skids that align with the slots on the cabinet top are included on the bottom of the 750-LFC cabinet. Units can be stacked normally or reversed for cardioid configurations.

When ground stacking 750-LFC loudspeakers, make sure the skids for each unit align with the slots in the cabinet tops. When equipped with the MRK-750 rigging kit, the 750-LFC loudspeaker can be ground-stacked on the

MG-MINA/LINA/750-LFC grid with LINA loudspeakers for mixed groundstacks. (See the MG-MINA/LINA/750-LFC Rigging Assembly Guide).

750-LFC Groundstack (With Rigging)

The 750-LFC loudspeaker can be configured in cardioid arrays to reduce undesirable low-frequency leakage behind the loudspeakers. The loudspeaker’s linearity ensures that cardioid patterns behave accurately even at very high levels. Cardioid arrays are achieved by placing three units coplanar to each other (in either a groundstacked or flown array) with one unit facing the opposite direction, as shown in the figure below. Apply signal processing to the rear-facing unit with polarity opposite of the front-facing units and add an additional delay of 2.9 ms relative to the front-facing units. This configuration yields output from the rear-facing unit that cancels output normally present behind the array from the front-facing loudspeakers.

750-LFC Groundstack (Without Rigging)

The optional MRK-750 rigging kit allows the 750-LFC loudspeaker to be flown and ground-stacked with the MG-MINA/LINA/750-LFC multipurpose grid. The kit also allows 750-LFC loudspeakers to be flown and ground-stacked with LINA loudspeakers with no transition hardware. The rigging kit is available as a factory-installed option or as a field upgrade and uses rugged GuideALinks and intuitive quick-release pins to securely link adjacent loudspeakers in flown and ground-stacked array configurations.

When equipped with the MRK-750 rigging kit, the 750-LFC cabinet includes six captive GuideALinks and six mating link slots that link to adjacent units in flown and ground-stacked arrays. Located at the bottom of the cabinet, GuideALinks drop down and into the link slots of the cabinet below it. GuideALinks extend and retract with knobs and are secured with two quick-release pins: one each in the top and bottom cabinets.

GuideALinks accommodate reversed units for cardioid arrays. The MRK-750 rigging kit includes ten loudspeaker quick-release pins (0.25 in x 0.53 in, black button, PN 134.039).

750-LFC loudspeakers with MRK-750 Rigging Kit, GuideALinks and Quick-Release Pins

The original MG-MINA grid (PN 40.207.101.01) includes only the front and the middle links that allow flying MINA or LINA loudspeakers from it. Meyer Sound recommends NOT using the middle link to attach the 750-LFC. Using the middle link halves the load rating compared to using the front and rear attachment points.

Instead, Meyer Sound recommends using the updated version MG-MINA/LINA/750-LFC (PN 40.207.101.02) to hang 750-LFC loudspeakers. Existing grids can also be updated with the GLK-750-LFC grid link upgrade kit (PN 40.207.301.01), which includes the two rear links, installation hardware, and installation instructions (PN 17.207.301.01). Using the rear links, instead of the middle, effectively increases the load rating for the grid when attaching 750-LFC loudspeakers.

MG-MINA/LINA/750-LFC rigging grid

The 750-LFC cabinet’s GuideALinks accommodate both 750-LFC and LINA loudspeakers without transition hardware. The front and rear GuideALinks are used when flying the 750-LFC below the MG-MINA/LINA/750-LFC grid, or when flying it below another 750-LFC (Figure 20). The configuration of the 750-LFC loudspeaker’s GuideALinks, front and rear, determines its splay angle. The four corner link slots on the top of the 750-LFC cabinet accept GuideALinks from flown 750-LFC loudspeakers. The front and middle link slots accept LINA GuideALinks when flying LINA loudspeakers below the 750-LFC, as shown in the figure below. The configuration of LINA loudspeaker’s GuideALinks, front and rear, determines its splay angle.

FlownMG-MINA/LINA/750-LFC, 750-LFC and LINA with GuideALink Attachments

The 750-LFC cabinet’s front and middle links insert into slots in the MG-MINA/LINA/750-LFC grid when groundstacking the 750-LFC. The 750-LFC cabinet’s front and middle GuideALinks slots are used when stacking LINA loudspeakers on top of the 750-LFC, as shown in the figure below.

Groundstacked LINA and 750-LFC with GuideALink Attachments

750-LFC Splay Angles

The front and rear GuideALinks attach at angles of 0°, 1.5°, 3.25° or 4.75°, allowing for curved 750-LFC arrays. Because the cabinet’s front and rear GuideALinks are symmetrical, the curved arrays can also include cardioid configurations.

750-LFC Front GuideALinks Label

The labels next to the front and rear GuideALinks indicate the splay angle between cabinets (when the opposing links are set to 0°). As the links are moved down, the splay angle increases. To stow the GuideALinks, move them all the way up to STOW and pin them.

Note

Curved 750-LFC arrays do not provide directionality for low-frequency content. The curved array capability of the 750-LFC is provided to minimize unwanted high-frequency reflections from adjacent mid-high arrays and to aesthetically mimic the curvature in adjacent mid-high arrays.

All 750-LFC cabinets come standard with an integral pole-mount receptacle that allows the subwoofer to be easily paired with ULTRA Series loudspeakers. You can mount Meyer Sound loudspeakers on top of the 750-LFC with a heavy-duty pole and pole-stand adapter.

The 750-LFC pole-mount receptacle comes in two sizes:

Meyer Sound offers accessories for this purpose:

Pole and Pole-Mount Adapter: 750-LFC with 2 LINA, MUB-MINA/LINA U-bracket, and 35MM Pole Stand Adapter (left); 750-LFC with Ultra Series speaker on MSA-STAND Adapter Cup 35MM (right)

The following Meyer Sound loudspeakers can be mounted on top of the 750-LFC cabinet. Make sure that the pole and pole-mount adapter can support the weight of the mounted loudspeakers and that they are installed according to the manufacturer’s instructions.

The MCF-750 caster frame safely transports up to three 750-LFC loudspeakers, making it easy to assemble and disassemble arrays in blocks of three cabinets. There are two versions available: one for MRK-750-equipped cabinets (PN 40.271.070.02), the other for cabinets without rigging (PN 40.271.070.03). The caster frame’s sturdy construction allows it to be conveniently moved with forklifts (when cabinets are equipped with the MRK-750 rigging kit only). The MCF-750 can also be used to support 750-LFC loudspeakers in groundstacked configurations.

MCF-750 Caster Frame for cabinets without rigging

MCF-750 Caster Frame for cabinets with rigging

The caster frame for 750-LFC cabinets equipped with the MRK-750 rigging includes four fixed, 0° link slots that attach to the cabinet at the bottom of the stack and are secured with the quick-release pins (0.25 in x 0.90 in, black button with 6-inch lanyard, PN 134.036) included with the 750-LFC.

MCF-750 Caster Frame with 750-LFC Stack, Exploded View

750-LFC cabinets need not be equipped with the MRK-750 rigging kit for transport with the caster frame. The loudspeaker skids ensure that cabinets stack cleanly on the caster frame. However, to avoid tipping, straps (not included) should be used when transporting cabinets that have not been fitted with the MRK-750 rigging kit.

MCF-750 Caster Frame, (3) 750-LFCs (without Rigging), using straps (Not Included)

50-LFC cabinets equipped with the MRK-750 rigging kit provide for more secure transport, because the bottom cabinet can be linked and pinned to the caster frame. The three cabinets can be linked and pinned together as well.

MCF-750 Caster Frame, (3) 750-LFCs (with Rigging)

Safety Guidelines for the MCF-750 Caster Frame

• Do not stack more than three cabinets on the MCF-750 caster frame.

• Use straps when transporting 750-LFC loudspeakers that have not been fitted with the MRK-750 rigging kit.

• To avoid tipping, transport stacks with loudspeakers linked and locked at 0-degree splay angles.

• Forklifts should only be used to move the MCF-750 caster frame when cabinets have been outfitted with the MRK-750 rigging kit and the cabinets have been securely linked.

• When lifting a stack with a forklift, always keep the forks wide and close to the caster frame’s wheels. Failing to do so may bend the caster frame or cause the stack to tip.

• When ground-stacking 750-LFC loudspeakers with the caster frame, make sure that all four caster wheels are blocked to prevent the stack from rolling away.

Caution

The caster frame must be removed before flying a loudspeaker array.

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.

The 750-LFC rigid removable rain hood is easily attached and removed with the included four screws.

The 750-LFC collapsible rain hood is installed on the unit when shipped. Four screws secure its frame permanently.

MCF-750 Caster Frame with Rigging Weight: 34 lbs (15.4 kg)

MCF-750 Caster Frame without Rigging Weight: 28.7 lbs (13.0 kg)