Connectable Signal Sources - Ecler MAC90i Manual De Instrucciones

The FA-4 external power supply for the MAC90i operates (depending on country) under
110, 120, 220, 230 or 240V AC 50/60Hz. See characteristics in the back of the unit. Sometimes it
could get hot, so you'd better install it in a well-cooled place. The drilled profiles allow you to screw it,
given its reduced size, virtually anywhere. The electrical link between the power supply and the
mixer is made by a special multipin cable in both extremes, plugging into the socket (58) of the
MAC90i. Two green LEDs (17) at the upper right corner of the mixer show that the positive and
negative voltages are right (+18 y -18V DC).
You should avoid mixing the mains wire with and in between shielded signal cables,
because this could generate noise and hum.
In order to protect the FA-4 from eventual mains overloads or occasional excesses in the
consumption of the internal circuits, it has a 0.4A (62) mains protection fuse. Should this fuse ever
blow off, disconnect the mixer from mains and replace it for an identical one. If the new fuse also
blows ask our Authorized Technical Service. NEVER REPLACE THE FUSE WITH ANOTHER ONE
WITH A HIGHER VALUE.
CAUTION: Fuse substitutions have to be performed by a qualified technician.

3.2. Connectable Signal Sources

- Turntables / Phono: They must be fitted with a magnetic cartridge capable of a nominal
output between -60 and -20dBV (1 and 100mV). The PHONO (52) inputs of the MAC90i have a high
headroom (margin before saturation) and it can handle higher output cartridges than what is usual. If
you plan to use moving coil cartridges, they must be of high output level type, you should use a
transformer or external preamplifier, which must be placed as near as possible to the turntables.
These inputs have a nominal sensitivity of -40dBV(10mV).
- Microphones: The MIC inputs (55) are ready for a nominal input level of -50dBV
(3.16mV). They are of the XLR3 type. 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 MIC inputs allow for balanced connections. You should use the following connections
for the XLR:
Hot or direct signal
Cold or inverted signal
Ground
The microphones must be low impedance (200 to 600) monophonic. For non balanced
connections, short circuit terminal 3 to ground.
- Compact disc, magnetophone, cassettes and videos: These signals can be connected to
any CD (53) or LINE (54) input. Al these inputs carry level type signals between -30 and +20dB
(31.6mV and 10V).
However, given the important level differences between usual LINE and CD sources, the
MAC90i provides specialized inputs for each source. The CD input sensitivity is 0dBV (1V) while the
LINE input sensitivity is -10dBV (316mV). In both cases, it is possible to internally adjust them (see
4.10.1).
> Terminal 2
> Terminal 3
> Terminal 1
5