Input Signal Sources - Ecleree SMAC PRO40 User Manual

Because of the high gain of the PHONO and MICROPHONE inputs, always try to place
the mixer as far away as possible from noise sources (dimmers, engines, etc...) and mains
wires. For the very same reason, and under any circumstance, should you ever remove the
unit's metallic cover.
The power consumption of the SMACs is very low, so they don't need any cooling,
but you should avoid extreme temperatures and the atmosphere should be as dry and dust-free
as possible.
The SMAC PRO40 operates under 110, 120, 220, 230 or 240V 50/60Hz, depending
on country, (see characteristics in the back of the unit). Make sure that the mains wire (which
plugs into 32) is far away from the signal cables in order to avoid any possible audio hum.
In order to protect the unit from an eventual electrical overload it carries a 250mA
fuse (32). Should it ever blow up, unplug the unit from mains and replace it with an identical
one. If the new fuse blows again contact immediately with our Authorized Technical Service.
YOU MUST NEVER USE A HIGHER VALUE FUSE.
CAUTION: Fuse substitutions have to be performed by a qualified technician.

3.2. Input signal sources

-Turntables: They must be fitted with magnetic cartridges of 1.77 to 56mV nominal
output level. The PHONO inputs (25) of the SMACs have a very good headroom so they can
accept high output level cartridges. If you use moving coil cartridges they must be of high
output level type and a transformer or external preamplifier, placed as near as possible to the
turntable, must be connected between the cartridge and the mixer.
-Microphones: The Mic inputs (1-33), have a nominal input level of 0.562 to 17.7mV
and are equipped with XLR 3 and 1/4" jack connectors.
These inputs allow for the use of balanced wires. Connections are as follows:
HOT or direct signal
COLD or inverted signal
GROUND
Low impedance (200 to 600Ω) monophonic microphones must be used. Shortcircuit
pins 1 and 2 of the XLR connector or use a mono jack whenever an UNbalanced connection is
desired. An stereo jack can also be used for UNbalanced connections if the ring is shorted to
ground.
CD, magnetophones, cassettes, tuners and video players: they can be connected to
the CD or LINE inputs. All these inputs can handle line level signals, but the SMAC's has
dedicated CD (23) and LINE (24) inputs. The CD input sensitivity is +5dBV (1.778V) and the
LINE input sensitivity is –5dBV (562mV) so that nowadays sound sources requirements are
completely fulfilled.
Direct access to the main mix: The SMAC PRO40 mixer have a direct access to the main
mix bus that enables the connection of the mixer to external effect units (see 4.6) or to other
mixing units.
XLR 3
> Terminal 2
> Terminal 3
> Terminal 1
1/4" jack
Tip
Ring
Sleeve
5