Ecler eHMA SERIES User Manual

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Contents

Ecler eHMA SERIES User Manual Manual pdf 5 page image

5• Auto-standby function: standby mode (low power consumption) automatic activation in theabsence of audio signals at inputs for more than 2 minutes, with immediate return to normaloperation when a signal reappears.• +24VDC external power on eHMA60 and eHMA120 (eHMA models also offer a connector to bepowered from external batteries). AC direct connection with internal power supply on eHMA240.• Output zones with ON/OFF switches (turning on or off the line of speakers connected to the zoneoutputs):o 2 zones with eHMA120o 4 zones with eHMA240• Remote control port (REMOTE), compatible with volume control panels from WPm Series(WPmVOL, etc.), on eHMA2403. INSTALLATIONeHMA series powered mixers are specially designed to be installed in a standard 19" rack, takingup 1U or 2U (eHMA60 is a half-width unit, and optional accessories are available for standard rackmounting). It has been designed to be operated by non-technical users. This is the reason why its tonecontrols are adjustable only with a screwdriver. On the opposite, input and output level controls use classicand easily accessible rotary knobs.Due to its low power consumption and heat sink, the eHMA powered mixer doesn't need any fancooling. However, avoid installing it in dusty environments and/or in a location with extreme temperatureand moisture.The mixer should be kept apart from noise and interference sources (dimmers, motors, etc...) aswell as from power cables.In order to protect the mixer from eventual overloads, the eHMA240 is protected by a time-delaypower fuse of 0.5A. If it gets blown up, you must replace it with an identical one. If it gets blown up, youmust replace it with an identical one. NEVER REPLACE THE FUSE WITH ANOTHER ONE WITH AHIGHER VALUE. eHMA60 and eHMA120 have an external universal power supply.CAUTION: Fuse substitutions have to be performed by a qualified technician.4. INPUTSThe eHMA inputs support two types of audio signals (mono microphone MIC or stereo LINE).Dual inputs have a MIC/LINE selector located on the rear panel:• Microphone signal: Euroblock connector for a nominal input level from –50dBV (3.16mV) to –20dBV (0.1mV), with a GAIN control on the rear panel to adjust the gain.Here is the wiring diagram for microphones:Microphones must be low impedance (200 to 600Ω) and monophonic.The eHMA supplies phantom power for condenser microphones; it is enabled with arecessed jumper, accessible from the rear panel (see diagram). By default, phantom power is disabled(factory setting).