Connectable Signal Sources - Ecler MAC55i Manual De Instrucciones

In order to protect the mixer from eventual mains overloads or occasional excesses in the
consumption of the internal circuits, it has a 250 mA (31) 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 Authorised 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 with -50dBV (3.16mV)
minimum nominal output level. The PHONO (23) inputs of the MAC55i 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. This inputs are
supplied with an input sensitivity internal selector with two possible sensitivity levels -40 and -50dBV
(10 and 3.16mV). See 4.6.1. The mixer is supplied adjusted to -40dBV.
- Microphones: The MIC inputs (20) are ready for a nominal input level of -50dBV (3.16
mV) and are equiped with 1/4" jack 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 31.6 mV).
The connection of balanced signals is as follows:
Hot or direct signal
Cold or inverted signal
Ground
Low impedance (200 to 600) monophonic microphones must be used. In case of working
with an unbalanced connection we recommend to use monophonic jack plugs although stereo jacks
plugs are also suitable if the ring is short-circuited to the sleeve.
- Compact disc, magnetophone, cassettes and videos: These signals can be connected to
any CD (22) or LINE (21) input. Al these inputs carry level type signals between -10 and 0dBV
(316mV and 1V).
However, given the important level differences between usual LINE and CD sources, the
MAC55i 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
4.6.1).
-Tuners and auxiliary equipment: Any auxiliary equipment capable of supplying a signal
between 316mV and 1V must be connected to the above mentioned LINE/CD inputs.
- Headphones: In order to achieve the best performance, they must be of high impedance
type (200-600). They must be connected to the HEADPHONES OUT (15) connector, a standard
1/4" stereo jack. Connect ground to sleeve, ring to right and tip to left.
- Other mixers: The MIX (24) input provides a direct access to the main mix bus, so this is
a perfect input for another mixer to be plugged in without using up a regular input.
- Power amplifiers: See 4.5.
> Tip
> Ring
> Sleeve
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