Subscribe to Our Youtube Channel
Related Manuals for Cloud MA40
Summary of Contents for Cloud MA40
- Page 1 MA40 Mini Amplifier Installation and User Guide MA40 Installation and User Guide v1.0...
- Page 2 The exclamation point within an equilateral triangle is intended to alert the user to the presence of important operating and maintenance (servicing) instructions in the literature accompanying the appliance. MA40 Installation and User Guide v1.0...
-
Page 3: Important Safety Instructions
MA40 Installation and User Guide v1.0... - Page 4 The external wiring connected to these terminals requires installation by an instructed person or the use of pre-made leads or cords. MA40 Installation and User Guide v1.0...
-
Page 5: Table Of Contents
Music Level and EQ control ................18 Line 1 Priority ....................18 Mic inputs ......................19 Mic gain adjustment ..................19 Microphone level control ................20 Mic EQ ........................ 20 Microphone priority ..................20 Output ........................20 MA40 Installation and User Guide v1.0... - Page 6 APPENDIX ..................25 PCB layout diagram....................25 Table of internal jumpers and default settings ..........25 Summary of rear panel DIP switch functions ........... 26 EMC considerations ....................27 Earthing........................27 Technical specifications ..................28 MA40 Installation and User Guide v1.0...
-
Page 7: Safety Information
The product conforms to the following European electrical safety standards: BS EN 60065:2002 (+A2:2010) UL60065 This product is compliant with the relevant provisions of: Energy Star® Eligibility Criteria Ver 3.0 for Audio-Video products. MA40 Installation and User Guide v1.0... -
Page 8: Rosh And Weee Declaration
RoSH and WEEE declaration Cloud Electronics Limited manages its business and collaborates with its suppliers to comply with the European Union restriction of the use of certain hazardous substances in electrical and electronic equipment, RoSH Directive (2002/95/EC), that came into force on 1st July 2006, and similar restrictions in other jurisdictions. -
Page 9: Safety Considerations And Information
Safety Considerations and Information The MA40 is powered by an external DC supply. A separate Power Supply Unit (PSU) is supplied with the amplifier. The PSU must be earthed. Ensure that the mains power supply provides an effective earth connection using a three-wire termination. -
Page 10: Overview
The MA40 can deliver 40 W (mono) into a 4 ohm load. It has two unbalanced stereo inputs for line level signals (typically music sources) and a balanced mic input for announcements, etc. -
Page 11: Ma40 Main Features
• Selectable LINE 1-over-LINE 2 priority • 40 W power amplifier • Remote volume control port: compatible with Cloud RL Series plates • Music Mute control input (N/O or N/C) for interfacing to an emergency system • Selectable 65 Hz high-pass filter for use with 100/70/25 V line systems (via external transformer) •... -
Page 12: Block Diagram
BLOCK DIAGRAM MA40 Installation and User Guide v1.0... -
Page 13: Front Panel Description
Automatic Power Down mode MUTE – red LED: illuminates when the MUSIC MUTE function is active PEAK – red LED: illuminates if the amplifier’s dynamic clip protection becomes active MA40 Installation and User Guide v1.0... -
Page 14: Rear Panel Description
See “Summary of rear panel DIP switch functions” on page 26 in the Appendix section for full details. 11. POWER INPUT – connect external DC power here: the MA40 requires 12 to 24 V at 2.5 A MA40 Installation and User Guide v1.0... -
Page 15: Installation
INSTALLATION Mechanical The compact size and light weight of the MA40 combined with its high energy efficiency allows it to be installed in almost any location. It can be easily placed in ceiling or wall voids, or fitted to the rear of display screens or loudspeaker cabinets. -
Page 16: Ventilation
Consideration should also be given to ease of access, should the operational configuration or audio levels need adjustment after installation. In free-standing installations, always fit the rubber feet supplied, and do not stand any other items on top of the unit. MA40 Installation and User Guide v1.0... -
Page 17: Connections And Adjustments
AUDIO SOURCE 2 RIGHT CHANNEL The two line inputs are summed together internally, though Line input 1 can be configured to have priority over Line input 2, see “Line 1 Priority” on page 18. MA40 Installation and User Guide v1.0... -
Page 18: Sensitivity & Gain Control
Line 1’s input. When this happens, it switches its music source automatically to Line 1. Once the signal at Line 1 stops (e.g., when an announcement finishes), Line 2’s source will smoothly restore to its former level over approx. 3 seconds. MA40 Installation and User Guide v1.0... -
Page 19: Mic Inputs
Mic inputs The MA40 has a single microphone channel, enabling it to be used for announcements, commentary, karaoke or any other purpose requiring a microphone. By default, the mic channel is independent and is simply mixed with the summed line inputs, but may be reconfigured so that it has automatic mic-over-line priority. -
Page 20: Microphone Level Control
A switch-on delay function mutes the output during power-up and power-down to protect loudspeakers. The MA40 will deliver its rated power of 40 W into a 4 ohm load when powered by the external PSU supplied with the amplifier. The maximum output power will... -
Page 21: Remote Control
To prevent this, the MA40’s output stage is provided with a switchable 65 Hz high-pass filter. We recommend that the filter is always enabled when the amplifier is used with 100/75/25 V line systems. -
Page 22: Connecting An Rl-1 Series Remote Control Plate
1 (indicated b a ‘chassis’ symbol on the rear panel). 0 V on pin 2 corresponds to maximum level and +10 V will produce 60 dB of attenuation. The rate of attenuation is approximately 165 mV/dB. MA40 Installation and User Guide v1.0... -
Page 23: Music Mute Input
25). The factory default setting is N/O, thus requiring a short-circuit to be applied across the two pins of the connector for muting to occur. REMOTE MUSIC MUTE TERMINATIONS MUSIC MUTE MUSIC MUTE INPUT INPUT NORMALLY OPEN (NO) NORMALLY CLOSED (NC) CONNECTION CONNECTION MA40 Installation and User Guide v1.0... -
Page 24: Auto Power Down
Auto Power Down The MA40 is an extremely energy-efficient amplifier, but can be made even more so by enabling the Auto Power-Down feature. When active, the signal level is constantly monitored and if no input signals are measured for 15 minutes the amplifier enters a “Sleep”... -
Page 25: Appendix
N/O or N/C EQ card bypass Present/absent Present 65 Hz hi-pass filter ON/OFF For factory use only – do not fit a Absent jumper here Auto Power Down Present/absent Present +12 V Mic ON/OFF phantom power MA40 Installation and User Guide v1.0... -
Page 26: Summary Of Rear Panel Dip Switch Functions
(LINE 1 and LINE 2) are disabled. The summed line input OFF = REMOTE level is controlled by the level control on the remote plate wired to the RL-1 connector. Note: default settings are in BOLD text. MA40 Installation and User Guide v1.0... -
Page 27: Emc Considerations
The 0 V rail of an MA40 amplifier is directly coupled to the chassis ground. No interconnection problems should... -
Page 28: Technical Specifications
10 dB to 50 dB Input Impedance >2 kohms (balanced) Headroom >12 dB Noise <-90 dB Phantom Power +12 V (internal jumper) OUTPUT Output Power (1 kHz 40 W, DC input >18 V continuous sine wave) MA40 Installation and User Guide v1.0... - Page 29 220 mm x 41 mm x 144.5 mm 8.7” x 1.6” x 5.7” Dimensions (w x h x d) 290 mm x 160 mm x 210 mm Shipping 11.4” x 6.3” x 8.3” 750 g Weight Shipping 1.0 kg MA40 Installation and User Guide v1.0...
- Page 30 MA40 Installation and User Guide v1.0...
- Page 31 MA40 Installation and User Guide v1.0...
- Page 32 www.cloudusa.pro...
Need help?
Do you have a question about the MA40 and is the answer not in the manual?
Questions and answers