OUTPUT POWER CONNECTION. MODES OF OPERATION
Each channel includes a pair of five-way binding post and a SPEAKON
®
connector.
These connectors are wired inside in parallel. The red binding post is positive and the black
is ground. The SPEAKON
®
connector, following NEUTRIK recommendations, has the next
polarity: PIN 1+ positive, and PIN 1- ground. Keep in mind the polarity upon connecting the
speakers since change the a speaker polarity of a system reduces the output power of the
power amplifier, upon remaining this speaker with other phase with regard to the others.
In the output connection it is necessary to keep in mind a series of important precau-
tions in order to don't produce an accidental short circuit or a possible damage in the equip-
ment:
Consider the power-handling capacity of your speakers before connecting it to the power
amplifier. Equipos Europeos Electrónicos is not liable for damage occurred by the connection
of speakers to the power amplifier with less nominal power that the power amplifier.
Turn off the power amplifier and turn down the input attenuators, whenever takes
place a output power connection. The output power connectors could have high
voltage, with the rising danger of short circuit.
Never put the output power connectors in parallel. This connection doesn't in-
crease the power and could cause the break of the power amplifier.
Do not connect the power amplifier output connectors to the output connectors of
any other power amplifier. This connection could cause the break of one or both
power amplifiers.
Do not connect the output connector ground (black binding post or PIN 1- of the
SPEAKONr connector) to input connector ground (PIN 1 of the connector XLR-3-31 or
sleeve of the Jack connector 1/ 4" in the case of the models MF8 and MF12). This
could create a ground loop and could cause feedback oscillations.
Use loudspeaker cables capable to resist the output current of the power amplifier.
The selection of a good loudspeaker cable, with a good quality and an adequate
diameter is very important, and is often one of the things that less is kept in mind.
The next list shows us the maximum output currents of the power amplifiers according
to the model:
MODELS
MAXIMUM OUTPUT CURRENT
MF8
16A.
MF12
19A.
MF16
23A.
MF24
28A.
There are many factors that determine the loudspeaker cable diameter: the length of
the cable, the type of signal that is going to circulate for it, the output power of the power
amplifier etc. A cable with high resistance, reduces the damping factor, limiting the power
amplifier capacity for control to the speakers accurately.
ALTAiR
PROFESSIONAL POWER AMPLIFIERS MF SERIES
11
