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- Page 1 MPA-626 Installation & Operation Manual V5.0 Cloud Electronics Limited 140 Staniforth Road, Sheffield, S9 3HF England Tel +44 (0) 114 244 7051 Fax +44 (0) 114 242 5462 E-mail info@cloud.co.uk Web site: http://www.cloud.co.uk...
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Page 2: Table Of Contents
MPA-626: Installation and Operation Manual MPA-626 Installation and operation manual Contents Section Page Safety Notes................3 General Description..............3 Schematic Diagram ..............3 Music Inputs 4.1 Sensitivity & Gain Control ............ 4 4.2 Music Source Select ............4 4.3 Music Level Control, Local or Remote ......... 4 Music Equalisation .............. - Page 3 MPA-626: Installation and Operation Manual 17.3 Earthing ................15 17.4 Ventilation.................15 Technical Specifications............15 General Specifications............16 Factory Default Jumper Settings ..........16 11-07-02 V4...
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Page 4: Safety Notes
For more detailed information refer to the rear of the manual. General Description The Cloud MPA-626 is mixer-amplifier with applications in Licensed, Retail and Leisure venues. The unit has inputs for six stereo line signals and two microphone signals. Front panel controls are provided for music source selection, music level and microphone levels. -
Page 5: Music Inputs
(RL-1) to the 3 pole connector on the rear panel of the MPA-626 see the diagram below. Setting internal jumper J12 to the disable position will disable the front panel level control, see the diagram below for jumper location. -
Page 6: Music Equalisation
±10dB at 10kHz and the bass control has a range of ±10dB at 50Hz. Music Priority When a Juke Box or Spot Announce Player is connected to the MPA-626, fully automatic priority over any selected line input can be achieved by using the Line 6 input and setting the rear panel switch L6/PR to ON. - Page 7 MPA-626: Installation and Operation Manual Wiring a CPM-4 to MPA-626 Amplifiers Wiring Multiple CPM-4 Microphones to an MPA-626 The access inputs can also trigger the following functions: 1. Chime Location of Jumpers J3,4,5,6,7&8 Optional depending upon the setting of jumpers J8 and J7 for Mic 1 and 2 respectively 2.
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Page 8: Restoration Relays
MPA-626: Installation and Operation Manual 3. Restoration Relays The MPA-626 has two restoration relays one activated by Mic 1 access, the other by Mic 2 access. See section 7.3 When the microphone input(s) are to be used without the access feature the microphone access connector must be fitted with two shorting links, one from 0V to 1 and another from 0V to 2. -
Page 9: Front Panel Level Controls
±10dB at 100Hz and 5kHz. Microphone Priority The MPA-626 provides three separate microphone priority functions. Two of these enable the microphones to have priority over music the other allows Mic 1 to have priority over Mic 2. 10.1 Microphone over music priority Fully automatic, voice operated priority is provided for the microphone signals. -
Page 10: Power Amplifier And Line Outputs
0dBu by means of an adjacent rotary control. The nominal output level is 0dBu (775mV) but the MPA-626 can operate with a wide range of signal levels up to a maximum output of +20dBu (7.75V). The music level control affects the auxiliary outputs. -
Page 11: Music Mute (Fire Alarm Interface)
This is usually a relay mounted close to the MPA-626, which is powered by the fire alarm control panel. The relay should close during an alarm condition (the installation of this relay is normally undertaken by the fire alarm installation company). -
Page 12: Facility Input
15.1 AE-1 Aerobics Module The Cloud AE-1 is a remotely located active module with facilities for line level music and an unbalanced microphone. The AE-1 can be used for any application where there is a need for a local music and/or an unbalanced microphone source to be connected to the house system. - Page 13 15.2 DM-1 Dual Microphone Input Module The Cloud DM-1 is an active remote module with facilities for two balanced microphones. The DM-1 can be used in any application where local connection and control of two microphones is required. The prime application is venues that may require the connection of extra microphones to the house system at any time for speeches, announcements and conferencing etc.
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Page 14: Connecting Multiple Dm-1 Modules To The Facility Input
Power Supply Capacity The existing MPA-626 can supply a total load of 54mA to external active devices and internal modules. Care should be taken when using external active devices and internal modules with the MPA-626 amplifier since exceeding the external load capacity risks the power supply cutting out. -
Page 15: General Notes
Always use balanced interconnections wherever possible. If the MPA-626 is mounted in a 19" rack, do not locate the unit in close proximity to a powerful amplifier, which may radiate a strong magnetic field from the power transformer. - Page 16 MPA-626: Installation and Operation Manual Microphone Inputs 100Hz / -3dB(filter) 20kHz ±0.5dB Frequency Response <0.03% 1kHz Distortion Gain Range 40dB Input Impedance >2kΩ (balanced) Common mode rejection >70dB 1kHz Headroom >20dB Noise -127dB EIN 22Hz-22kHz (150Ω) HF: ±10dB/5kHz LF: ±10dB/100Hz...
- Page 17 Bose is a registered trademark of The Bose Corporation. In the interest of continuing improvements Cloud Electronics Limited reserves the right to alter specifications without prior notice. Cloud Electronics Limited 140 Staniforth Road Sheffield S9 3HF England Telephone +44 (0) 114 244 7051 Fax +44 (0) 114 242 5462 E-mail: Info@cloud.co.uk...
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