Master audio SM Series Manual De Usuario página 15

4 - CONNECTION TO THE MAINS
First, it is essential to ensure that the main voltage corresponds to the
apparatus voltage. It is not advisable to connect and disconnect the mains wire
without first making sure that the switch is in its OFF position.
The amplifier is equipped with an Inrush current limiter circuit, which avoids current
excess when powering up. In addition to that, a mains fuse located close to the input
cable protects the amplifier when the average current consumption is out of the
specified range.
CAUTION: the connection to any other voltage
different from the one specified can damage the
amplifier immediately.
5 - LOUDSPEAKERS CONNECTION
The loudspeaker system should be connected to the Speakon or Terminal
connectors ensuring that the polarity is correct. It is very important to use a cable
fitting to the power of the amplifier in order to maintain the high damping factor these
units provide. As a general guideline, we offer the minimum cross section values
according to the distance:
- Up to 20m in length: cross section of minimum 2.5mm
- From that length on, increase proportionaly the section, 4 mm
(12AWG).
These cross-sections correspond to impedance of 8
Ohms; they should be 50% increased for 4 ohms
impedance. If you use very low loads (2 Ohm) the
cross section has a very important role in the sound
quality. To avoid power and quality losses a 6 mm
section most be used for 10 m length.
There are two speaker outputs: CH A and CH B both fitted with Speakon sockets and
Terminal type (binding posts) connectors.
The Speakon connector (not included) has 4 terminal poles labeled as +1, -1, +2 and
-2. Each pole can fit a maximum wire section of 4mm
The Binding Posts are marked with Red for the Positive Pole, and Black for the
Negative Pole. They accept direct cable connection up to 8mm
2
(14AWG)
2
2
(12AWG).
2
section (8AWG).
2
minimum
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