Meyer Sound Documentation

Input level meters: Four-segment LED ladders represent the level for each input channel. The green LED range begins at approximately -80 dB below clipping. The yellow LED range lights a few dB below clipping. The top LED turns red as the input signal level reaches full-scale digital (0 dBFS). In Compass (Settings > Input and Output), the Voltage Range may be set for all input and output channels to either +16 dBu (4.89 V rms) or +26 dBu (15.5 V rms); this selection determines the clipping levels.

Input mute buttons: Each input channel has a mute button. Toggling an input mute button in Compass also toggles this mute button.

Signal / clip LEDs: Output level is indicated by one multi-color LED for each output channel. The LED turns green to indicate output levels from -85 dB to -5 dB below clipping. The LED glows brighter as the signal level increases. The LED turns amber to indicate levels from -5 dB to just below the clipping level. The LED turns red as the output signal level reaches full-scale digital (0 dBFS). In Compass (Settings > Input and Output), the Voltage Range for all input and output channels can be set to either +16 dBu (4.89 V rms) or +26 dBu (15.5 V rms); this setting determines the clipping levels.

Output mute buttons: Each output channel has a mute button. Toggling an output mute button in Compass also toggles this mute button.

Front panel display: The front panel display provides the device name, current snapshot, device identity indicator, and other critical device notifications available on the GALAXY. Use the Front Panel Display Control in Compass to adjust the brightness and color.

Controller LED: Indicates activity when the GALAXY is connected to a client computer running the Compass control software.

SIM LED (on units equipped with this component): Indicates if the GALAXY is connected to a SIM audio analyzer.

Power LED: When lit, this LED indicates the GALAXY DC power supply is operating properly.

AVB sync LED: When lit, the LED indicates the GALAXY AVB media clock is locked.

Audio clock LED: When lit, the LED indicates the selected system clock (AVB, AES, or Internal) is locked.

PowerCON AC power connector: This locking connector mates with the provided AC power cable.

Ethernet connector: The two RJ-45 connectors can be used to attach the GALAXY processor to an AVB network to send audio signals through time-sensitive networks, and allow it to be controlled by Compass and/or Compass Go. Use a Gigabit Ethernet network cable (CAT5e or better). All primary network connections should be made to AVB port 1 on GALAXY processors. All secondary connections should be made to AVB port 2.

Analog / AES3 input connectors (A, C, E, G): Four XLR-3F input connectors accept either a standard line-level analog signal or an AES two-channel digital signal. In Compass (Settings > Input and Output), these inputs can be set to Analog, AES3 Left, or AES3 Right. Input Connectors B, D, F, and H can only be used as analog inputs. The GALAXY processor supports standard AES3 digital audio signals at discrete sample rates in the range of 20–216 kHz (see Input sample rates ).

Analog input connectors (B, D, F, H): Four XLR-3F input connectors accept standard line-level audio only. These inputs are typically paired with their corresponding input pairs (A, C, E, G) to receive two-channel audio signals. The analog-only inputs are disabled when their input pair is set to AES mode (i.e., when input A is set to AES mode, input B is disabled).

Analog output connectors (1–16): Sixteen XLR-3M connectors route audio to Meyer Sound self-powered loudspeakers or to amplifier channels driving passive systems.

SIM 3 Bus Connectors (for units equipped with these components): Connects to the SIM audio analyzer so the GALAXY’s inputs and outputs can be used as measurement points. A second SIM 3 bus port is provided to loop to additional GALAXY processors or to a SIM-3088 Line Switcher.

Wink Button: Pressing the Wink button on the rear of a GALAXY processor will cause the device to enter the Identify Mode, a bidirectional processor identification feature that helps users locate processors in multi-processor configurations. The front panel will flash, and Compass will show an indication on both the GALAXY processor’s Inventory tab and the Settings > Network tab of each processor (Settings tab). To exit Identify Mode, push the Wink button on the processor again or click on the Identify button on the Network tab in Compass.

PowerCON AC power connector: This locking connector mates with the provided AC power cable.

Ethernet connector: The two RJ-45 connectors can be used to attach the GALAXY processor to an AVB network to send audio signals through time-sensitive networks, and allow it to be controlled by Compass and/or Compass Go. Use a Gigabit Ethernet network cable (CAT5e or better).

Analog /AES input connectors (A, C): Two XLR-3F input connectors accept either a standard line-level analog signal or an AES two-channel digital signal. In Compass (Settings > Input and Output), these inputs can be set to Analog, AES3 Left or AES3 Right. Input connectors B and D can only be used as analog inputs. The GALAXY processor supports standard AES3 digital audio signals at discrete sample rates in the range of 20–216 kHz (Input sample rates).

Analog input connectors (B, D): Two XLR-3F input connectors accept standard line-level audio only. These inputs are typically paired with their corresponding input pairs (A, C) to receive two-channel audio signals. The analog-only inputs are disabled when their input pair is set to AES mode (i.e., when input A is set to AES mode, input B is disabled).

Analog output connectors (1–8): Eight XLR-3M connectors route audio to Meyer Sound self-powered loudspeakers, or to amplifier channels driving passive systems.

SIM 3 bus connectors (for units equipped with these components): Connects to the SIM audio analyzer so the GALAXY’s inputs and outputs can be used as measurement points.

PowerCON AC power connector: This locking connector mates with the provided AC power cable.

Ethernet connector: The two RJ-45 connectors can be used to attach the GALAXY processor to an AVB network to send audio signals through time-sensitive networks, and allow it to be controlled by Compass and/or Compass Go. Use a Giga-bit Ethernet network cable (CAT5e or better).

Analog / AES3 input connectors (A, C, E, G): Four XLR-3F input connectors accept either a standard line-level analog signal or an AES two-channel digital signal. In Compass (Settings > Input and Output), these inputs can be set to Analog or AES3 Left or AES3 Right. The GALAXY processor supports standard AES3 digital audio signals at discrete sample rates in the range of 20–216 kHz (see Input sample rates). Input connectors B, D, F, H can only be used as analog inputs.

Analog input connectors (B, D, F, H): Four XLR-3F input connectors accept standard line-level audio only. These inputs are typically paired with their corresponding input pairs (A, C, E, G) to receive two-channel audio signals. The analog-only inputs are disabled when their input pair is set to AES mode (i.e., when input A is set to AES mode, input B is disabled).

AES output connectors (1–16): The top row of eight XLR audio outputs for the GALAXY 816-AES3 provides 16 channels of AES3 digital outputs (two channels per output: 1–2, 3–4, etc.). Use only cables rated for AES signals to connect these outputs to the inputs of AES3 devices.

Analog output connectors (9–16): The bottom row has eight XLR-3M connectors to route audio to Meyer Sound self-powered loudspeakers or to amplifier channels driving passive systems. Any output processing applied to outputs 9–16 is mirrored in digital format on the appropriate AES3 output and on the corresponding analog output.

SIM 3 bus connectors (for units equipped with these components): Connects to the SIM audio analyzer so the GALAXY’s inputs and outputs can be used as measurement points. A second SIM 3 bus port is provided to loop an additional GALAXY or to a SIM-3088 line-level switcher.

Wink button: Pressing the Wink button on the rear of a GALAXY processor will cause the device to enter the Identify Mode, a bidirectional processor identification feature that helps users locate processors in multi-processor configurations. The front panel will flash, and Compass will show an indication on both the GALAXY processor’s Inventory tab and the Settings > Network tab of each processor (see Settings tab). To exit Identify Mode, push the Wink button on the processor again or click on the Identify button on the Network tab in Compass.