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MC2 Audio E4-75 Owner's Manual

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E4
E4- - - - 75
E4
E4
75
75
75
OWNER'S
MANUAL
2
MC
AUDIO Ltd.,
Units 6-8, Kingsgate,
Heathpark Industrial Estate,
HONITON,
Devon EX14 1YG
England
Tel: +(0)1404.44633 Fax: +(0)1404.44660
www.mc2-audio.co.uk

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  • Page 1 E4- - - - 75 OWNER’S MANUAL AUDIO Ltd., Units 6-8, Kingsgate, Heathpark Industrial Estate, HONITON, Devon EX14 1YG England Tel: +(0)1404.44633 Fax: +(0)1404.44660 www.mc2-audio.co.uk...

  • Page 2: Table Of Contents

    TECHNICAL SPECIFICATION NOTE THAT ALL AMPLIFIERS* BEFORE SERIAL NUMBER 7E70004 HAVE A DIFFERENT WIRING CONFIGURATION FOR THE INPUT AND OUTPUT SOCKETS. THIS WILL ONLY AFFECT THE ‘LINKED’ OR ‘BRIDGED’ MODES OF OPERATION. * Serial numbering for the E4-75 commenced with 6E7..

  • Page 4: Important Safety Instructions

    IMPORTANT SAFETY INSTRUCTIONS Read these instructions. Keep these instructions. Heed all warnings. Follow all instructions. Do not block any ventilation openings and install in accordance with the manufacturer’s instructions. Unplug this apparatus during lightning storms or when unused for long periods of time. Clean only with a dry cloth.

  • Page 5: Rf Emissions

    DO NOT USE THE UNIT IF THE ELECTRICAL POWER CORD IS FRAYED OR BROKEN. The power supply cords should be routed so that they are not likely to be walked on or pinched by items placed upon or against them, paying particular attention to cords and plugs and the point where they exit from the appliance.
  • Page 6 WARNING: Apparatus with CLASS I construction shall be connected to a MAINS socket outlet with a protective earthing connection. WARNING: To prevent injury, this apparatus must be securely attached to the rack in accordance with the installation instructions. Read these instructions. 14.
  • Page 7 ATTENTION: Appareils de construction de CLASSE I doit être raccordé au réseau électrique via une prise de courant reliée à la terre. ATTENTION: Pour éviter toute blessure, cet appareil doit être solidement fixé à la torture, conformément aux instructions d'installation. Lisez ces instructions.

  • Page 8: General Information

    Power Reduction Circuit (PRC) and Impedance Sensing There are two PRC circuits in the E4-75: one for channels A & B and one for channels B & C. When the amplifier is to be used with 4 ohm speakers (or bridged mono into 8 ohms) or if you want to reduce the maximum power to protect the speakers, then the PRC can be selected via the switches on the rear panel.

  • Page 9: Outputs

    The amplifier is designed to operate with fully balanced equipment and ground loops or loss of performance may be experienced if connected to unbalanced sources. If it is unavoidable however, the following wiring should be used. The cable should still be twin core plus screen. Pin 1 - Screen - connected to the chassis of the unbalanced equipment - or left disconnected at the unbalanced end.
  • Page 10 E4-75 - 14A into 4 ohm speaker loads. 3. Do not connect the inputs/outputs to any other voltage source such as a battery, mains source or power supply, regardless of whether the amplifier is turned on or off.

  • Page 11: Switching On

    Operation SWITCHING ON At ‘switch-on’ the protection circuit will initially activate whilst the circuits stabilise. Assuming no faults are detected after a few seconds, the red A/P LED will go off. PANEL CONTROLS AND INDICATORS Level controls These are analogue controls allowing precise level settings. Note that in ‘BRIDGED’ mode, both level controls must be set to the same position.

  • Page 12: Fault Indicator

    AIR FILTER The filter behind the air intake apertures on the front of the E4-75 amplifier should be cleaned or replaced periodically, e.g. 3-6 months. (Filters in amplifiers located in more 'dirty' atmospheres may require more frequent maintenance.) Access is via the blue front panel. The filter should be 'dry' cleaned, using a vacuum cleaner preferably.
  • Page 13 TECHNICAL SPECIFICATION Main Specifications - E series Amplifiers Parameter (Units) E100 E475 Output Power (per channel) (Watts) 8 ohms 2500 1250 1400 4 ohms 4800 2500 1350 2800 2 ohms 8200 4200 2400 1550 3700 Output Power (bridged) ( Watts) 8 ohms 9600 5000...

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