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User Manual for Cloud USA MA40 40W Mini Amplifier for Audio and AV Installations Click to enlarge the picture
Contents of the user manual for the Cloud USA MA40 40W Mini Amplifier
- Product category: Mixer/Amplifiers Cloud USA
- Brand: Cloud USA
- Description and content of package
- Technical information and basic settings
- Frequently asked questions – FAQ
- Troubleshooting (does not switch on, does not respond, error message, what do I do if...)
- Authorized service for Cloud USA Mixer/Amplifiers
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User manual for the Cloud USA MA40 40W Mini Amplifier contain basic instructions
that need to be followed during installation and operation.
Before starting your appliance, the user manual should be read through carefully.
Follow all the safety instructions and warnings, and be guided by the given recommendations.
User manual is an integral part of any Cloud USA product,
and if it is sold or transferred, they should be handed over jointly with the product.
Following the instructions for use is an essential prerequisite for protecting
health and property during use, as well as recognition of liability on the part of the manufacturer
for possible defects should you make a warranty claim. Download an official Cloud USA user manual in which you will find instructions on how to install, use, maintain and service your product.
And do not forget – unsuitable use of a Cloud USA product will considerably shorten its lifespan!
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Product description 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 amplifierCompact module for install-and-forget situations2 unbalanced stereo line inputs with individual sensitivity trimsElectronically-balanced mic input with separate gain controlPhantom power selectable by internal jumperFront-panel control of music level and mic levelsFront-panel HF and LF EQ adjustments for music sourcesRear-panel HF and LF EQ adjustment for mic inputSelectable MIC-over-LINE prioritySelectable LINE 1-over-LINE 2 priorityOptional EQ cards available to suit various popular installation loudspeakersRemote level control port; compatible with Cloud RL Series platesMusic mute input; selectable N/O or N/CAutomatic power-down function (user-selectable)Less than 1W power consumption in sleep modeConvection cooledSilent in operationPSU meets US DoE Level VI energy requirementsOperates from 100 to 240 VACUniversal AC adapter included
In the Box Cloud USA MA40 40W Mini Amplifier for Audio and AV Installations Power Adapter Limited 5-Year Warranty Table of Contents
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Technical parametersCloud USA MA40 Specs | | | Frequency Response | 20 Hz to 20 kHz at ±1 dB | | Distortion | < 0.1 % | | Sensitivity | -12 dBu to +8 dBu | | Input Gain Control | 20 dB range | | Input Impedance | 10 kOhms (unbalanced) | | Headroom | > 12 dB | | Noise | < -90 dB | | EQ Frequency Bands (Fixed) | LF: ±10 dB at 50 Hz
HF: ±10 dB at 10 kHz | | | | Frequency Response | -3 dB at 120 Hz (filter) to 20 kHz ±1 dB | | Distortion | < 0.1% | | Gain | 10 to 50 dB | | Input Impedance | > 2 kOhms (balanced) | | Headroom | > 12 dB | | Noise | < -90 dB | | Phantom Power | +12 V (internal jumper) | | | | Output Power | 40 W, DC input > 18 V (1 kHz continuous sine wave) | | | | I/O | Screw terminal connections | | Power Input | 12 to 24 VDC (External 24 Volts AC adapter supplied) | | Power Consumption | 47 W | | PSU | External, Universal-type, 100 to 240 VAC, 47 to 63 Hz | | Amplifier Protection | Fixed 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 | | Weight | 26.5 oz / 750.0 g |
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