Meyer Sound Documentation

The Acheron AC connector supplies AC power to the unit and is located on its rear user panel. The Acheron can be equipped with one of the following AC connectors:

The Acheron requires a grounded outlet. To operate safely and effectively, it is extremely important that the entire system be properly grounded.

If you replace the included AC power cable, make sure to use a cable that is wired correctly and equipped with the appropriate power plug (on the other end) for the area in which you will operate the unit.

AC Power Cable with Edison Adapter

The Acheron can be powered from a standard three-prong Edison outlet with an L6-20 to Edison adapter (available for purchase from Meyer Sound; PN 27.033.024.03).

L6-20 to Edison AC Power Cable Adapter

AC Connector Wiring

When wiring international or special-purpose AC power cables and connectors, use the following wiring scheme:

AC Cable Wiring Scheme

• Connect the blue wire to the black terminal, or the terminal marked with an N.

• Connect the brown wire to the red terminal, or the terminal marked with an L.

• Connect the yellow and green wire to the green (or green and yellow) terminal, or the terminal marked with an E.

Caution

When creating AC power cables and distribution systems, it is important to preserve AC line polarity and connect the earth ground on both ends of the cable. The Acheron requires a grounded connection. Always use a grounded outlet and plug. It is extremely important that the system be properly grounded to operate safely and properly. Do not ground-lift the AC cable.

All components in an audio system (self-powered loudspeakers, processors, etc.) must be properly connected to an AC power distribution system, to ensure 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 as the neutral and line cables.

The figure below illustrates a basic three-phase AC distribution system with the loudspeaker load distributed across the three phases. All loudspeakers are connected to common neutral and earth-ground lines.

AC Power Distribution System

The Acheron operates safely and continuously when the AC voltage stays within 85–134 V AC and 165–264 V AC at 50 or 60 Hz. The loudspeaker allows any combination of voltage to GND (neutral-line-ground or line-line-ground).

If the voltage drops below 85 V (brownout), the Acheron uses stored power to continue operating temporarily; the loudspeaker will shut down if the voltage does not rise above the low boundary before the stored power is used.

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

The current draw for the Acheron is dynamic and fluctuates as operating levels change. Since 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.

You can use the following tables as guidelines for selecting cable gauge and circuit breaker ratings for the system’s operating voltage.

The minimum electrical service amperage required by an Acheron loudspeaker system is the sum of the Maximum Long-Term Continuous Current for each loudspeaker. An additional 30 percent above the minimum amperage is recommended to prevent peak voltage drops at the service entry.

When AC power is applied to the Acheron its Intelligent AC™ power supply automatically selects the correct operating voltage, allowing it to be used internationally without manually setting voltage switches. In addition, Intelligent AC 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.

When powering up the Acheron, the following startup events take place over several seconds.

Pay close attention to these important electrical and safety guidelines.

The Acheron and Acheron LF include female XLR Input and male XLR Loop output connectors.

Acheron Audio Connectors, Input and Loop Output

Input Connector

The female XLR Input connector accepts a balanced audio signal with an input impedance of 10 kOhm. The connector uses the following wiring:

• Pin 1 — 220 kOhm to chassis and earth ground (ESD clamped)

• Pin 2 — Signal (+)

• Pin 3 — Signal (–)

• Case — Earth (AC) ground and chassis

Pins 2 and 3 carry the input as a differential signal. Pin 1 is connected to earth through a 220 kOhm, 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 standard, balanced XLR audio cables with all three pins 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 unwanted noise or hiss is produced by the loudspeaker, 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 audio cable, source audio, and AC power.

Loop output connector

The male XLR Loop output connector allows Acheron and Acheron LF loudspeakers to be looped from a single audio source. For applications that require multiple Acherons and Acheron LFs, connect the Loop output of the first unit to the Input of the second, and so forth.

Note

The order in which loudspeakers are connected when looping audio signals is unimportant. The Loop connector is wired in parallel to the Input connector and transmits the unbuffered source signal even when the Acheron is powered off.

To avoid distortion when looping multiple Acherons, 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 ohms) to yield the maximum peak SPL over the entire operating bandwidth of the loudspeakers. Most professional audio equipment can transmit these source levels.

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

Note

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

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.

Acheron loudspeakers employ Meyer Sound’s advanced TruPower® limiting. Conventional limiters assume a constant loudspeaker impedance and set the limiting threshold by measuring voltage alone. This method is inaccurate because loudspeaker 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.

Acheron Limit LEDs

In contrast, TruPower limiting anticipates varying loud- speaker impedances by measuring both current and voltage to compute the actual power dissipation in the voice coil.

This improves performance, both before and during limiting, by allowing the driver to produce the maximum SPL across its entire frequency range. 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.

Limiting LEDs

Behavior for the Acheron Limit LEDs is described below:

• The low- and high-frequency drivers for the Acheron 80 and Acheron 100 are powered by separate amplifier channels, each with their own limiter. Limiting activity is indicated with a High Limit LED for the high-frequency channel, and a Low Limit LED for the low-frequency channel.

• The two low-frequency drivers for the Acheron LF are powered by separate amplifier channels that are routed to a single limiter. When a safe power level is exceeded in either channel, limiting is engaged for both channels and the Low Limit LED lights.

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 responses at high levels.

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

The Acheron performs within its acoustical specifications at normal temperatures when the Limit LEDs are unlit, or if the LEDs are lit for two seconds or less and then turn off for at least one second. If the LEDs remain lit for longer than three seconds, the loudspeaker enters hard limiting where:

• Increases to the input level have no effect.

• Distortion increases due to clipping and nonlinear driver operation.

• The drivers are subjected to excessive heat and excursion, which will compromise their life span and may eventually lead to damage over time.

Caution

The Limit LEDs indicate when a safe, optimum level is exceeded. If the Acheron 80s or Acheron 100s in a system begin to limit before reaching the required SPL, consider adding Acheron LFs to the system. For more information, see Integrating Acheron LF Loudspeakers

Note

Acheron loudspeakers use optical limiters that add no noise and have no effect on the signal when the limiters are not engaged and the Limit LEDs are not lit.

The Acheron uses a forced-air cooling system with two fans (one variable-speed, ultra-low-noise primary fan and one reserve fan) to prevent the amplifier module from overheating. The fans draw air in through ducts on the front of the cabinet, over the heat sink, and out the rear of the cabinet. Because dust does not accumulate in the amplifier circuitry, its life span is increased significantly.

Airflow for the Acheron

When the Acheron heat sink temperature is below 42° C, the variable-speed primary fan runs continuously at its slowest speed with an inaudible operating noise. The primary fan increases speed when the heat sink temperature reaches 42° C; the primary reaches full speed at 62° C and is barely audible near the cabinet, even without an audio signal. If the heat sink temperature reaches 74° C, the reserve fan turns on. The reserve fan turns on if:

The reserve fan turns off when the heat sink temperature lowers to 68° C.

Dust and the Amplifier Module

Operating the Acheron in dusty environments, or for prolonged, intensive periods, may cause dust to accumulate along its airflow path, thereby preventing normal cooling. Under these circumstances, it may be necessary to periodically remove the air intake foam and use compressed to air to clear the dust from the foam and air ducts.

In addition, if the amplifier gets unusually hot, you should remove the amplifier module and use compressed air to clear any dust from its heat sink.

Caution

• Make sure to unplug the AC power from the Acheron before cleaning its amplifier.

• To keep the Acheron from getting too hot, allow for proper ventilation, 3–4 inches, behind the loudspeaker.

To meet the SPL and low-frequency headroom requirements of large rooms, the Acheron 100 or Acheron 80 can be daisy-chained with the Acheron LF loudspeaker, creating a system with three low-frequency drivers and one high-frequency driver. Adding an Acheron LF yields approximately a 10 dB boost in the low-frequency range, depending on loading conditions and room acoustics.

Acheron 100 with Acheron LF

Acheron LCR System with Acheron LFs

The Acheron LF has been carefully designed so that its frequency and phase responses complement the Acheron. The Acheron LF has the same low-end frequency response as the Acheron (38 Hz) and rolls off at 320 Hz to avoid any interference in the crossover region of the Acheron.

This unique multi-way, gradated design offers smooth coverage and maximum low-frequency impact with all drivers active at the lowest frequencies and each rolling off, one at a time, via the internal active crossover. This technique eliminates interference between drivers that would otherwise occur at shorter wavelengths, enabling the system to maintain ideal polar, phase, and frequency responses throughout the low and low-mid operating ranges. As a result, the system can deliver the necessary power to completely fill a large theatre.

Achieving a Flat Frequency Response with an Acheron / Acheron LF Stack

When the Acheron and Acheron LF are daisy-chained (using the Loop output connector on the user panel) an approximate boost of 10 dB at 110 Hz results, depending on the loading conditions and room acoustics. To achieve a flat frequency response in this configuration, a single parametric filter with the following characteristics can be applied to the signal:

Filter type	Parametric
Frequency	110 Hz
Bandwidth	2 (Q = 0.6667)
Dimensions	–10 dB

The Acheron LF has been carefully designed so that its frequency and phase responses complement the Acheron. The Acheron LF has the same low-end frequency response

Caution

When daisy-chaining Acherons and Acheron LFs, make sure the audio cables are wired correctly to avoid polarity reversals.

ACOUSTICAL

If a digital signal processor is used to drive an Acheron LCR system, the Acherons and Acheron LFs should be driven from the same processor to keep their delay times the same. Otherwise, a phase shift between the loudspeakers may be encountered. In addition, you should verify the delay time between channels: some digital signal processors may incur channel-to-channel delays when the processor is near maximum throughput, which becomes more likely as the number of filters in use by the processor increases.

In no case should a filter higher than the 2nd order be used on source signals. The additional phase shift introduced by these filters deteriorates the impulse response, and the higher roll-off does not improve crossover interaction.

If loudspeakers will be driven directly from a digital signal processor, make sure the signal is sufficient to drive the total load impedance of the connected loudspeakers. For more information, see Loop output connector.

Strategically placed 3/8-inch threaded points on the side corners of the Acheron cabinet allow the unit to be secured to floors with uptilt or downtilt using the optional mounting brackets. The Acheron can also be mounted on top of the Acheron LF loudspeaker, also with uptilt or downtilt, using the optional stacking brackets. Both brackets are available for purchase from Meyer Sound.

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

The Acheron and Acheron LF ship with four 3/8-16 x 1.5- inch screws installed on each loudspeaker side (eight total). These screws and threaded points are used to secure the floor mount and stacking brackets to the loudspeakers.

The Acheron floor mount brackets secure Acheron loudspeakers to floors with downtilt and uptilt angles of 0–18 degrees (in 3-degree increments). The floor mount

brackets should also be used with Acheron LF loudspeakers when stacking an Acheron on top of the Acheron LF.

Acheron Floor Mount Brackets

Acheron with Floor Mount Brackets

Acheron Floor Mount Bracket Kit Contents

The Acheron floor mount kit (PN 40.188.026.01) includes the following parts.

Part	Part number	Quantity
Acheron floor mount bracket (left)	64.188.042.01	1
Acheron floor mount bracket (right)	64.188.043.01	1
Flat washers	113.509	4

Note

The 3/8-16 x 1.5-inch screws required for securing the floor mount brackets to the Acheron are shipped with the loudspeaker installed in the two bottom screw holes on each side (four total).

Floor Mounting Acherons and Acheron LFs

Procedure. To floor mount an Acheron or Acheron LF:

1. Remove the two 3/8-16 x 1.5-inch screws at the bottom of each loudspeaker side (four total).

2. Secure the left bracket to the left side of the loudspeaker with two of the removed screws and two of the included flat washers.

   • To mount the loudspeaker at 0 degrees with no downtilt or uptilt, use the bottom bracket holes.

   • To mount the loudspeaker with a downtilt, orient the bracket with the large end toward the rear of the loudspeaker. For available downtilt angles, see Floor Mount Downtilt Angles.

   • To mount the loudspeaker with uptilt, orient the bracket with the large end toward the front of the loudspeaker. For available uptilt angles, see Floor Mount Uptilt Angles.

3. Repeat the previous step with the right bracket and the remaining two screws and washers.

4. Secure the brackets to the floor with fasteners (not included) appropriate for the floor surface.

Floor Mounting Acherons with Downtilt and Uptilt

The Acheron floor mount brackets can mount loudspeakers with a downtilt or uptilt. Available angles are 3-18 degrees in 3-degree increments. The direction in which the brackets are oriented determines whether the loudspeaker can be mounted with downtilt or uptilt.

Acheron Floor Mounted with 3-Degree Downtilt

Caution

When using the floor mount brackets with an AcheronLF that will also have an Acheron stacked on top of it, mount the AcheronLF at 0 degrees using the bottom bracket holes.

Floor Mount Downtilt Angles

When the floor mount brackets are oriented with the bracket’s large end toward the rear of the loudspeaker, the Acheron can be mounted with downtilt angles of 3-18 degrees in 3-degree increments.

Acheron Floor Mount Bracket Oriented for Downtilt

The small end of the bracket attaches to the loudspeaker using the top hole. The large end of the bracket attaches to the loudspeaker with one of the angled holes.

Table 3. Acheron Floor Mount Downtilt Angles

Figure 1. –3°	Figure 2. –6°
Figure 3. –12°	Figure 4. –18°

Floor Mount Uptilt Angles

When the floor mount brackets are oriented with the bracket’s large end toward the front of the loudspeaker, the Acheron can be mounted with uptilt angles of 3-18 degrees in 3-degree increments.

Acheron Floor Mount Bracket Oriented for Uptilt

The small end of the bracket attaches to the loudspeaker using the top hole. The large end of the bracket attaches to the loudspeaker with one of the angled holes.

Table 4. Acheron Floor Mount Uptilt Angles

Figure 5. +3°	Figure 6. +6°
Figure 7. +9°	Figure 8. +12°

One Acheron can be stacked on top of the Acheron LF and secured with the Acheron stacking brackets. The stacked Acheron can be mounted with downtilt and uptilt angles of 0–16 degrees.

Acheron Stacking Brackets

Acheron and Acheron LF with Stacking Brackets

Acheron Stacking Bracket Kit Contents

The Acheron stacking bracket kit (PN 40.188.025.01) includes the following parts.

Part	Part number	Quantity
Acheron stacking bracket (left)	45.188.043.01	1
Acheron stacking bracket (right)	45.188.044.01	1
3/8-16 x 1.5” shoulder screws	101.507	4
Large 1/2” flat washers	113.531	4
Small Flat washers	113.509	4

Note

The 3/8-16 x 1.5-inch screws required for securing the stacking bracket to the Acheron LF are shipped with the Acheron LF installed in the top two screw holes on each side of the unit (four total).

Stacking Acherons on Acheron LFs

Procedure. To stack an Acheron on top of an Acheron LF:

1. Secure the Acheron LF to the floor with the floor mount brackets at 0 degrees using the bottom bracket holes. For more information, see Floor Mounting Acherons and Acheron LFs

2. Stack the Acheron on top of the Acheron LF.

   Tip

   Optionally place two 1 x 2-inch wood pieces (not included) across the top of the Acheron LF, between it and the Acheron. The resulting extra space between the loudspeakers will make it easier to align the Acheron screw holes with the brackets.

3. Remove the two 3/8-16 x 1.5-inch screws at the top of each side of the Acheron LF (four total). These screws will be used to secure the stacking bracket to the Acheron LF.

4. Remove the two 3/8-16 x 1.5-inch screws at the bottom of each side of the Acheron (four total). These screws will not be needed for installing the stacking bracket.

5. Secure the left bracket to the left side of the Acheron LF with two of the removed screws and two of the small flat washers (included in the Acheron stacking bracket kit). Use the bracket’s bottom screw holes and install the bracket so its rubber gasket faces the loudspeaker.

   • To mount the Acheron with downtilt, orient the bracket with the large end toward the rear of the loudspeakers. For available downtilt angles, see Stack Mount Downtilt Angles

   • To mount the Acheron with uptilt, orient the bracket with the large end toward the front of the loudspeakers. For available uptilt angles, see Stack Mount Uptilt Angles

6. Secure the right bracket to the right side of the AcheronLF with the remaining two screws (previously removed) and the remaining two small flat washers. Install the bracket so its rubber gasket faces the loudspeaker.

7. Secure the stacking brackets to the Acheron with the four 3/8-16 x 1.5-inch shoulder screws and four large 1/2-inch washers (both included with the Acheron stacking bracket kit). Insert the shoulder screws in the bracket’s top slots but don’t yet tighten them completely.

   Tip

   If necessary, tip the Acheron slightly to align its screw holes with the bracket holes.

8. Adjust the angle of the stacked Acheron — anywhere between 0 and 16 degrees — by tilting the unit up or down so the screws slide through bracket slots.

9. Tighten all four shoulder screws to secure the stacking bracket to the Acheron.

Stacking Acherons with Downtilt and Uptilt

The Acheron stacking brackets can mount Acherons with either downtilt or uptilt. Available angles are anywhere from 0–16 degrees. The direction in which the brackets are oriented determines whether the loudspeaker can be mounted with downtilt or uptilt.

AcheronLF and Stacked Acheron with 16-Degree Downtilt

Caution

When stacking an Acheron on top of an Acheron LF, the Acheron LF must be secured to the floor with the floor mount brackets. In addition, the Acheron LF should not be mounted with downtilt or uptilt.

Stack Mount Downtilt Angles

When the stacking brackets are oriented with the bracket’s large end toward the rear of the loudspeakers, the Acheron can be mounted with downtilt angles of up to 16 degrees.

Make sure to install the brackets so the rubber gasket faces the loudspeaker. This ensures that the loudspeaker will not get scratched when adjusting the downtilt angle.

Acheron Floor Mount Bracket Oriented for Downtilt

Make sure to install the brackets so the rubber gasket faces the loudspeaker. This ensures that the loudspeaker will not get scratched when adjusting the downtilt angle.

Table 5. Acheron Floor Mount Uptilt Angles

Figure 9. +8°

Figure 10. +16°

Acheron Floor Mount Downtilt Angles

Stack Mount Uptilt Angles

When the stacking brackets are oriented with the bracket’s large end toward the front of the loudspeakers, the Acheron can be mounted with uptilt angles of up to 16 degrees.

Acheron Floor Mount Bracket Oriented for Uptilt

Make sure to install the brackets so the rubber gasket faces the loudspeaker. This ensures that the loudspeaker will not get scratched when adjusting the uptilt angle.

Table 6. Acheron Floor Mount Uptilt Angles

Figure 11. +8°

Figure 12. +16°

Compass RMS™ software provides extensive system status and performance data for each loudspeaker, including amplifier voltage, limiting activity, power output, heat sink temperature, fan and driver status, as well as mute and solo capability. Loudspeakers are added to the RMS network and assigned a node name during a one-time discovery procedure. Once loudspeakers are identified on the RMS network, they appear in Compass RMS as icons that can be customized, as shown in the figure below.

Compass RMS Window

Individual loudspeakers can be physically identified with the Wink option in RMS, which lights the Wink LED on the RMS module of that particular loudspeaker. Loudspeaker icons can be arranged in Compass RMS and saved as pages to represent how the loudspeakers have been deployed in the system. Multiple pages can be saved and recalled for specific performances and venues.

The RMS user panel includes three LEDs, two buttons, and two Network connectors.

RMS Module

Service LED (Red)

The red Service LED provides the following feedback:

• When unlit, the loudspeaker is successfully connected to the network and commissioned.

• When blinking once every two seconds, the loudspeaker is connected to the network but not yet commissioned in the RMS software.

• When lit continuously, the loudspeaker’s RMS hardware has failed and may indicate that the module has been damaged (contact Meyer Sound Technical Support).

Service Button

Pressing the Service button identifies the loudspeaker on the RMS network and notifies the RMS software that the loudspeaker is connected. Simultaneously press the Reset and Service buttons to reset the RMS module and decommission the loudspeaker from the network (see Resetting the RMS Module).

Wink LED (Green)

The green Wink LED lights when a signal is sent from the RMS software by clicking the Wink button on the loudspeaker’s icon or on its Text view. This feature is useful for identifying the physical loudspeaker corresponding to a loudspeaker icon in the RMS software.

Reset Button

Pressing the Reset button causes the RMS module’s firmware to reboot; this action will not affect whether the loudspeaker is commissioned (which is stored in flash memory). Simultaneously press the Reset and Service buttons to reset the RMS module and decommission the loudspeaker from the network (see Resetting the RMS Module ).

Activity LED (Green)

The green Activity LED flashes continuously when the loudspeaker has been successfully commissioned.

Network Connectors

The two Weidmuller connectors transfer data to and from the RMS network. Two connectors are provided to allow for easy connection of multiple (daisy-chained) loudspeakers on the network. Included with each RMS-equipped loudspeaker are RMS cable connectors and mounting blocks for constructing RMS cables. The RMS blocks allow the cables to be securely attached to the RMS module with screws.

Use the Reset and Service buttons to reset the RMS module, which will cause the module to be decommissioned from the network.

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.