Atlas Sound MA60G – 3-Input 60W Mixer Amplifier Global Power Supply

Product Overview

The Atlas Sound MA60G is a compact 3-input, 60-watt mixer amplifier designed for commercial paging, background music, and speech privacy applications in distributed 70V and 100V audio systems. Built in a 1RU half-rack form factor with a global 100–240VAC power supply, the MA60G is a reliable single-box solution for small to medium commercial audio deployments where a dedicated balanced microphone input, phantom power, and contact closure mute control are required alongside line-level sources.

Product Description

The MA60G delivers 60 watts RMS into a 70.7V or 100V distributed speaker line across a frequency response of 50 Hz to 20 kHz. The balanced mic/line/telephone input on Input 1 includes 15 VDC phantom power and a variable VOX mute sensitivity control, which allows paging announcements on this input to automatically attenuate the background music sources on Inputs 2 and 3. Two unbalanced line-level inputs accept sources such as CD players, streaming devices, and digital music receivers, with both inputs summed into the output mix. Contact closure mute terminals provide an external mute trigger point for integration with life safety systems, paging controllers, or other switching equipment. Removable level controls with a set-it-and-forget-it security cover allow the integrator to set input levels and then physically prevent adjustment from the front panel once the system is commissioned—a practical feature for public spaces where unauthorized changes are a concern. The signal-to-noise ratio of 55 dB and frequency response of 50 Hz to 20 kHz are appropriate for speech reinforcement and background music applications. The global power supply (100–240VAC, 50/60 Hz) eliminates voltage compatibility concerns in international deployments. Dimensions of 8.5 x 1.8 x 7.8 inches and a weight of 2.9 lbs make the MA60G easy to position in equipment closets, above ceiling tiles, or in rack enclosures with the appropriate half-rack adapter. The optional rack mount kit mounts one or two half-rack units into a standard 19-inch rack space.

Key Features

• Balanced Mic/Line/Telephone Input with Phantom Power — Input 1 accepts microphones, line-level, and telephone sources with 15 VDC phantom power for condenser microphones.
• Variable VOX Mute Sensitivity — Input 1 voice activation automatically mutes background music inputs when speech is present, with adjustable sensitivity to accommodate different microphone types and room levels.
• Contact Closure Mute Terminals — External contact closure input enables mute control from life safety systems, paging equipment, or room automation controllers.
• Removable Level Controls with Security Cover — Input level controls are covered by a removable panel after commissioning to prevent unauthorized adjustment.
• 2 Unbalanced Summing Line Inputs — Inputs 2 and 3 accommodate standard unbalanced line-level background music sources, summed into the master mix.
• 60W 70.7V / 100V Output — Drives standard commercial distributed speaker systems at both North American (70V) and international (100V) line voltages.
• Global Power Supply — 100–240VAC, 50/60 Hz input supports deployment in any country.
• 1RU Half-Rack Form Factor — Fits in tight spaces and rack mounts with a standard half-rack adapter.

Typical Applications

• Conference room paging and background music
• Boardroom distributed audio with mic priority
• Commercial meeting space paging systems
• Huddle room amplifier with paging
• Training room speech reinforcement
• Multi-purpose room background music

Technical Specifications

Frequently Asked Questions

Q: How does the VOX mute on Input 1 work?

A: When the MA60G detects a voice signal on Input 1 above the adjustable sensitivity threshold, it automatically attenuates the background music sources on Inputs 2 and 3. The sensitivity control allows the threshold to be set to match the microphone output level and room acoustics.

Q: Does the MA60G support condenser microphones?

A: Yes. Input 1 provides 15 VDC phantom power for condenser microphones. Dynamic microphones also work on this input without phantom power enabled.

Q: Can the MA60G be rack mounted?

A: The MA60G is a half-rack-wide unit. A standard half-rack to full-rack adapter allows it to be installed in a 19-inch rack enclosure. Contact your distributor for compatible rack mount kit options.

Q: What is the purpose of the contact closure mute terminals?

A: The contact closure terminals allow an external device—such as a life safety system, paging controller, or building automation system—to mute the amplifier output by closing a relay or contact, independent of the audio inputs.

Q: What is the warranty period?

A: The MA60G carries a 1-year limited warranty from AtlasIED.

Q: Is the MA60G compatible with international power standards?

A: Yes. The global power supply accepts 100–240VAC at 50 or 60 Hz, making the unit compatible with power standards in any country without a step-down transformer.