Ecler HMA120 - Manual (Page 5)

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3. INSTALLATION
The HMA120 can be installed on a tabletop, in a standard width rack (19") or in a half-width rack
(9.5"). Both rack installation options are possible using the available rack installation accessories (kit of 2
brackets (2UHRMKIT), not supplied).
Two considerations must be taken into account when you look for the right location where to put
your HMA120: first, maximum user comfort and second, easy access to the back panel in order to plug
several different devices to and from the unit.
Also, you should place the HMA120 away from noise sources (dimmers, motors, etc...), as well as
from the power cables.
In order to protect the unit from eventual overloads, the HMA120 is protected by a timered power
fuse (28) of 4A. If it gets blown up, you must replace it with an identical one. NEVER REPLACE THE
FUSE WITH ANOTHER ONE WITH A HIGHER VALUE.
CAUTION: Fuse substitutions have to be performed by a qualified technician.
4. AUDIO INPUTS
The HMA120 input channels support two types of audio signals:
 Microphones (MIC1, MIC2): they have balanced Euroblock connectors for a level between
-20dBV and -50dBV, with a back panel control (ADJ) to adjust its sensitivity
 Line level signals: they have a stereo unbalanced connection on double RCA connector
(or minijack, only LINE 3, duplicated on front panel). They accept signals with a nominal
level of 0dBV (LINE1, LINE2) or, for LINE3 input, lower-intensity signals with an input
sensitivity of -6dB. They can receive signals from CD players, radio tuners, mixing consoles,
media players, audio outputs of computers and tablets, etc.
Notes:
 Microphone inputs supply phantom power for condenser microphones, enabled by internal
jumper (see section 10. CONFIGURATION DIAGRAM)
 The MIC2/LINE input sensitivity is switchable between microphone and line level, with
internal jumpers (see section 10. CONFIGURATION DIAGRAM)
 Turntables CAN'T BE DIRECTLY CONNECTED to this unit because none of the inputs has
a RIAA preamplifier.
4.1. MIC1, MIC2/LINE Inputs
These 2 inputs can work simultaneously, so they can be mixed using their MIC1 and MIC2/LINE
level controls on the front panel, and this mix can be equalised with the BASS and TREBLE controls,
also located on the front panel. The selected music program (LINE1, LINE2, LINE3 or MEDIA) is also
mixed with these inputs signal.
In addition, they have the following features.
 Noise Gate: allows you to minimize the effect of ambient noise picked up by microphones
connected to these inputs. It is enabled by DIP switch on the side of the unit, and common to
both inputs.
 Talkover or priority: if the Talkover function is activated for a MIC input, its microphone signal
will cause an attenuation of the music program (and also an attenuation of the other
microphone, provided that its Talkover function is not enabled or not of higher priority) when
the microphone exceeds the detection threshold. The Talkover function of the MIC1 input has
a higher priority than the MIC2/LINE input. Both functions are independently enabled using
DIP switches on the left side of the unit.