Ecler MAC70v - Manual (Page 5)

5
3. INSTALLATION
3.1. Placement and mounting
The first thing to take into account when looking for the placement of the MAC70v is
your comfort and an easy access to all the connections.
The MAC70v has 19" (482.6 mm), 7U (310.5 mm) rack mounting ears that allow
you to place it in a standard rack.
Because of the high gain of the PHONO and MIC inputs, the mixer must be placed as
far as possible from noise sources (dimmers, engines, etc.) as well as from any mains cable.
You should never, under any circumstance, remove the metallic cover of the mixer.
The MAC70v, being a low consumption unit, does not need any cooling; you should
anyway avoid exposure to extreme temperatures and the operating environment must be as dry
and dust free as possible.
The MAC70v operates under voltages between 90 and 264 V at 47 to 63 Hz. All
models of the MAC v-series feature an over dimensioned power supply that adapts to the
mains voltage in any country of the world with no need to make any adjustments.
In order to protect the mixer from eventual mains overloads, it has a time-lag 0,5 A
(50) mains protection fuse. Should this fuse ever blow off, disconnect the mixer from mains
and replace it with an identical one. NEVER REPLACE THE FUSE WITH ANOTHER ONE WITH A
HIGHER VALUE.
ATTENTION: Changing the fuse must be performed by qualified technical personnel.
3.2. Connectable Signal Sources
- Turntables / Phono: They must be fitted with a magnetic cartridge with nominal
output level between -60dBV and -20dBV (1 to 100 mV). The PHONO (39) inputs of the
MAC70v have a high headroom (margin before saturation) and it can handle higher output
cartridges than what is usual. These inputs are supplied with a nominal input sensitivity of
-40dBV(10mV).
- Microphones: The MIC inputs (36) are ready for a nominal input level of -50dBV
(3.16 mV) and are equipped with XLR 3 connectors. These inputs provide, through the input
selector (1) at ATT position, an input sensitivity reduction of 20dB; this is, from -50 to -30dBV
(3.16 to 31.6mV). The connection of balanced signals is as follows:
Hot or direct signal > Pin 2
Cold or inverted signal > Pin 3
Ground > Pin 1
Low impedance (200 to 600
:) monophonic microphones must be used. In case of
working with an unbalanced connection Pin 1 and Pin 3 must be short-circuited.
The MAC70v features a Phantom power supply for the connection of condenser
microphones. A switch for general activation of the phantom power can be found on the front
panel of the unit (12). However, a set of internal jumpers allow you to inhibit the phantom
power for individual microphone inputs. The default setting of these jumpers on the MAC70v is
"Phantom ON". See configuration diagram.