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User Manual for Cloud USA MPA Series 240W Mixer Amplifier Click to enlarge the picture
Contents of the user manual for the Cloud USA MPA Series 240W Mixer
- 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 MPA Series 240W Mixer 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 MPA Series 240W Mixer Amplifier from Cloud USA provides a complete audio solution for houses of worship, retail outlets, hotels, licensed premises, and other spaces where music, announcements and/or flexible paging are required. It combines the functions of a four-channel microphone mixer with full paging facilities, a six-input music source selector, and a mono power amplifier in a single 2U unit.
The mixer-amplifier has six unbalanced stereo line inputs for music sources, and four balanced microphone inputs. Each microphone input has its own rear panel sensitivity control and front panel gain control, allowing multiple mics to be mixed together. Each line input has a rear panel sensitivity control; the required music source is selected by a front panel rotary switch and the volume is also adjusted on the front panel. The selected music source is mixed with the summed mic signals before being fed to the power amplifier stage.
The MPA Series is compatible with the Cloud PM1 single-zone paging microphone, and may also be used for one of the zones supported by the Cloud PM4/8/12/16/4-SA/8-SA multi-zone paging microphones. Alternatively, Mic 1 input may be configured to suit most OEM paging systems; paging is activated by a short-to-ground access connection, and Mic 1 may be configured to have automatic priority over the other mic inputs to prevent announcement clashes. Mic inputs may be selected to have automatic priority over the selected music source, and additionally, Line Input 6 may be set to have priority over any other selected to facilitate connection of a digital sound storage or similar device. A pre-announcement chime may also be enabled at installation. Mic 1 may be configured as a galvanically-isolated input for connection to (compatible) telephone systems, to permit paging to take place from any telephone extension.
A 70V-line transformer is fitted as standard, and the output stage drives high-impedance line loudspeaker distribution systems directly. An internal jumper allows the transformer to be disabled, permitting the amplifier to be used to drive low-impedance loudspeakers. A range of EQ cards to match the MPA Series amplifier to various installed-audio loudspeakers is available separately.
In addition to the main output, there is an MOH/Utility Output available as both an unbalanced line level signal and as a fully-isolated output suitable for driving the Music On Hold input of a telephone system. The music source at this output can follow the front panel music source selection or be fixed to Line 6, and the music/mic mix may be adjusted independently. A separate, balanced line level pre-output is also provided to facilitate the connection of additional power amplifiers.
A Music Mute Input is provided, which may permit compliance with local Fire Authority regulations; the microphone inputs remain active when the Music Mute is applied. Compatibility - With Standard Cloud Remote Control Plates: RL-1 Series (music level) and RSL-6 Series (music level and source selection)
General - 2U 19" rack mounting unit
- Provides amplification and simple control of music, mic sources, and paging in a single unit
- Output power ratings of 240W
- Integral 4-channel microphone mixer with per-input sensitivity adjustment
- Front panel controls for music source, music level, and level of each mic input
- Six (unbalanced) stereo line inputs with individual sensitivity adjustment
- Four balanced mic inputs with 15V phantom power
- Selectable 65 Hz hi-pass filter in each mic channel
- Separate microphone limiter circuit to prevent power stage limiter from ducking music signal in the presence of high mic levels
- Separate HF/LF EQ adjustments (rear panel) for mic signals and music source
- Paging control on Mic 1 input via short-to-ground access connection
- Mic 1 configurable for paging from telephone system
- Selectable VOX mic-over-music priority on all mic inputs
- Mic 1 may be selected to have priority over Mics 2 to 4
- Selectable Line 6 priority with choice of release times
- Selectable pre-announcement chime
- Music Mute control input (N/O and N/C) for interface to an emergency system
- Power amplifier protection circuitry
- Power amplifier input limiter
- Internal 70V line transformer fitted as standard
- Aux output from pre-amp (balanced, line level)
- MOH/Utility output in line level and 600 Ohm isolated formats (for telephone system MOH inputs)
- Loudspeaker EQ cards (sold separately)
- Forced-air cooling with variable speed control
In the Box Cloud USA MPA Series 240W Mixer Amplifier Limited 5-Year Warranty Manual PDF 1.1mb Table of Contents
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Technical parametersCloud USA MPA240 Specs | | | Sensitivity | 195 mV (-12 dBu) to 2.0 V (+8 dBu) | | Input Gain Control | 20 dB range | | Input Impedance | 47 kOhms | | Headroom | >20 dB | | Equalization | HF: ±10 dB @ 10 kHz
LF: ±10 dB @ 50 Hz | | | | Gain Range | 40 dB range | | Input Impedance | >2 kOhms (balanced) | | Phantom Power | 15 V, switchable per-input by jumpers | | Headroom | >20 dB | | Equalization | HF: ±10 dB @ 5 kHz
LF: ±10 dB @ 100 Hz | | | | Output Power | 240 W (any output, 1 kHz continuous sine wave @ <0.07% THD+N) | | Frequency Response | Line Inputs
Low-Z Output: +0 dB/-1 dB from 20 Hz to 20 kHz (65 Hz filter switched out)
High Voltage Output: +0 dB/-2 dB from 20 Hz to 20 kHz (65 Hz filter switched out)
Mic Inputs
Low-Z Output: -3 dB @ 100 Hz (3rd. order filter); -1 dB @ 20 kHz
High Voltage Output: -3 dB @ 100 Hz (3rd. order filter); -2 dB @ 20 kHz | | Distortion | Line Inputs
Low-Z Output: <0.03% @ 1 kHz, 1 dB below full power (80 kHz bandwidth)
High Voltage Output: <0.04% @ 1 kHz, 1 dB below full power (80 kHz bandwidth)
Mic Inputs: <0.03% @ 1 kHz, 1 dB below full power (80 kHz bandwidth) | | Noise | Line Inputs: -90 dB 22 Hz to 22 kHz, at speaker output, relative to full power
Mic Inputs: -127 dB EIN 22 Hz to 22 kHz (150 Ohms) | | Protection | Fixed level signal limiter: max gain reduction of 20 dB, DC protection, IV limiting & short circuit protection, switch-on delay | | | | Power Input | 120 V | | Fuse Rating | 100 V, T6.3A H | | Fuse | Type: 0.7 x 0.2" (20 x 5 mm) | | Dimensions | 19 x 3.5 (2 U) x 12" (48 x 8.9 x 30 cm) excluding connectors & knobs | | Weight | 48 lb (22 kg) |
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