Cloud USA MA40 40W Mini Amplifier for Audio and AV Installations

BH #CLMA40 • MFR #MA40
Cloud USA
Cloud USA MA40 40W Mini Amplifier for Audio and AV Installations
Key Features
  • 40W Amp for AV & Audio Installations
  • Museums Exhibits, Transportation & More
  • Compact at 8.7 x 1.6 x 5.7"
  • 2 x Line Inputs & x 1 Mic Input
The Cloud MA40 is a mono amplifier for use in AV systems and installations with an audio component. At 8.7 x 1.6 x 5.7", it is compact enough to fit into a wall or ceiling mount, or to be placed conveniently next to projectors, displays, and loudspeakers. As such, it is suitable for gallery/museum exhibitions and tour-guide systems. It can also work with digital signage systems, providing a vast improvement over the audio typically found in such devices. The amplifier handles 40W into a 4-Ohm load, though it can also operate with 12 to 24 VDC power supplies, making the MA40 suitable for installations where an AC mains power supply isn’t on hand—places such as trams, river-boats, and buses.
Special Order
Expected availability: 7-10 business days
$270.00

Important Notice

  • This item is noncancelable and nonreturnable.
Daniel A., B&H Pro Audio Expert

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Cloud USA MA40 Overview

The Cloud MA40 is a mono amplifier for use in AV systems and installations with an audio component. At 8.7 x 1.6 x 5.7", it is compact enough to fit into a wall or ceiling mount, or to be placed conveniently next to projectors, displays, and loudspeakers. As such, it is suitable for gallery/museum exhibitions and tour-guide systems. It can also work with digital signage systems, providing a vast improvement over the audio typically found in such devices. The amplifier handles 40W into a 4-Ohm load, though it can also operate with 12 to 24 VDC power supplies, making the MA40 suitable for installations where an AC mains power supply isn’t on hand—places such as trams, river-boats, and buses.

The amplifier itself can mix a balanced microphone input with two unbalanced stereo connections, summing the stereo inputs to mono internally and outputting them via the music channel, leaving the microphone channel for the balanced mic input. A music mute input is also provided, which can be hooked into an emergency system and permits compliance with local Fire Authority regulations; when the music mute is instantiated, the microphone input remains active, and a front panel MUTE LED illuminates. The inputs and outputs provided are all plug-in screw terminal connections, and can be controlled via separately-available remotes.  

Rear-panel DIP switches allow you to set various priorities, such as Line 1 over Line 2, or Mic over Line. Configured in this way, you can connect message stores, or cause the music channel to automatically attenuate whenever microphone signal is present; this comes in handy for announcements. For microphones requiring 12V phantom power, an internal jumper is available.

On the front panel, you’ll note controls for Mic, Line 1, and Line 2 levels, as well as low-frequency and high-frequency controls for the music channel to better accommodate the acoustics of your given space. On the rear of the unit, you’ll see that the line inputs have a preset control for gain, while the mic input sports preset gain, low-frequency, and high-frequency EQ controls. An energy efficient amplifier, the MA40 features a user-selectable power-down function which automatically puts the unit into a low-current standby mode when it ceases to receive signal after a predetermined amount of time.

Key Features at a Glance

40W power amplifier

Compact module for install-and-forget situations

2 unbalanced stereo line inputs with individual sensitivity trims

Electronically-balanced mic input with separate gain control

Phantom power selectable by internal jumper

Front-panel control of music level and mic levels

Front-panel HF and LF EQ adjustments for music sources

Rear-panel HF and LF EQ adjustment for mic input

Selectable MIC-over-LINE priority

Selectable LINE 1-over-LINE 2 priority

Optional EQ cards available to suit various popular installation loudspeakers

Remote level control port; compatible with Cloud RL Series plates

Music mute input; selectable N/O or N/C

Automatic power-down function (user-selectable)

Less than 1W power consumption in sleep mode

Convection cooled

Silent in operation

PSU meets US DoE Level VI energy requirements

Operates from 100 to 240 VAC

Universal AC adapter included

Cloud USA MA40 Specs

Line Inputs
Frequency Response20 Hz to 20 kHz at ±1 dB
Distortion< 0.1 %
Sensitivity-12 dBu to +8 dBu
Input Gain Control20 dB range
Input Impedance10 kOhms (unbalanced)
Headroom> 12 dB
Noise< -90 dB
EQ Frequency Bands (Fixed)LF: ±10 dB at 50 Hz
HF: ±10 dB at 10 kHz
Microphone Inputs
Frequency Response-3 dB at 120 Hz (filter) to 20 kHz ±1 dB
Distortion< 0.1%
Gain10 to 50 dB
Input Impedance> 2 kOhms (balanced)
Headroom> 12 dB
Noise< -90 dB
Phantom Power+12 V (internal jumper)
Output
Output Power40 W, DC input > 18 V (1 kHz continuous sine wave)
General
I/OScrew terminal connections
Power Input12 to 24 VDC (External 24 Volts AC adapter supplied)
Power Consumption47 W
PSUExternal, Universal-type, 100 to 240 VAC, 47 to 63 Hz
Amplifier ProtectionFixed level signal limiter; protection against DC, PSU overcurrent, amplifier overcurrent, over-temperature, supply voltage under/over-voltage; resettable internal breaker (no fuses).
Dimensions (W x H x D)8.7 x 1.6 x 5.7" / 22.0 x 4.1 x 14.5 cm
Weight26.5 oz / 750.0 g
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