Galileo 616Loudspeaker Management System

Galileo and Compass

Galileo 616: Hardware

Audio Inputs and Outputs

Galileo 616 Loudspeaker Management Processor Back Panel

Galileo 616’s audio I/O features six analog inputs on balanced XLR connectors feeding state-of-the-art A/D converters operating at 24-bit resolution, 96 kHz sample rate. Three of the inputs can be individually switched to operate as standard stereo AES/EBU digital audio inputs, accepting signals at sample rates up to 96 kHz. Since all internal processing is performed at 96 kHz, 32-bit vector floating point, any signals entering at lower sample rates are upsampled using state-of-the-art hardware sample rate converters. The six input channels can consist of a combination of analog and digital inputs.

The 16 outputs feature high-resolution 96 kHz, 24-bit D/A converters, and offer the same robust line driving capabilities as those of Meyer Sound’s analog line driver products, up to +26 dBu, allowing the Galileo 616 to easily drive Meyer Sound self-powered loudspeakers to full output at all frequencies, even over long lines.


The digital world is about networking devices together. Galileo 616 provides exceptional capabilities in this regard. Its Ethernet connection allows Galileo 616 to be remotely controlled from a computer or wireless tablet running Meyer Sound Compass control software under either the Macintosh or Windows operating system. Full bidirectional communication ensures that the user is always viewing current settings, whether operating the unit remotely or from the front panel.

SIM 3 Integration

The rear panel also includes a direct connection to Meyer Sound’s SIM 3 audio analyzer which allows Galileo 616 to act as a line switcher for the analyzer. This means that users can measure across any selection of Galileo 616’s inputs and outputs without any patching beyond a single cable connection to the analyzer, providing maximal flexibility with no extra setup.

The Galileo 616 is designed to afford a broad upgrade path for future interfacing options, which can include popular existing or future digital audio networking protocols.

Front Panel Control

In addition to its remote control capabilities, Galileo 616 features a comprehensive and intuitive set of front panel controls and an LCD screen, allowing it to be operated without the use of a computer. Crucial information is available at a glance and hardware controls make quick adjustments easy.

A carefully-crafted user interface gives Galileo 616 the quick, intuitive operation required for live use. Each input sports a 26-segment LED ladder meter, plus mute and select buttons/indicators, while each output has a bi-color level LED and mute and select buttons. Three high-resolution encoder knobs are used to make parameter adjustments, which are shown on the 128x64 pixel liquid crystal display.

Galileo 616 Loudspeaker Management Processor Front Panel

Powerful DSP Architecture

Galileo 616 is built around a monolithic, 1 GHz vector DSP architecture employing a direct DMA audio path to maximize processing power and guarantee fixed low-latency performance, no matter how much processing is applied. High-quality algorithms at 96 kHz sampling rate, 32-bit floating-point resolution are used to implement a large assortment of processing. Even when applying all available processing to every channel, Galileo 616’s DSP engine retains substantial processing headroom. This design demonstrates how Meyer Sound looks towards the future as much as to the present.

Galileo 616 Signal Flowchart

Real-World Protection

Meyer Sound knows that sound reinforcement requires expecting the unexpected. Galileo 616 offers protection against inadvertent changes that can result in serious problems. The AC power switch is software-activated, so that accidental button-pushes cannot turn off the unit’s power. A locking PowerCon AC connector ensures the power cable cannot be yanked out by an errant foot. And user-programmable lockout of all front panel controls offers four levels of protection to keep curious fingers from changing things best left untouched.

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