Martin Audio MA3.0 - V1.1 Betriebsanweisung PDF herunterladen (Seite 10)

1.6 Connecting Outputs

Warning: there are lethal voltages at the loudspeaker connectors when the amplifier is turned on. To

prevent any damages turn the amplifier off before connecting the loudspeaker.

Output connectors are made via Neutrik Speakon connectors. Consult the wire gauge chart to find a suitable

wire gauge to minimize power and damping factor losses in the speaker cables. The outputs can also work

in bridge mode. In normal stereo or linked mono mode, for each channel 1+ of the Speakon connector is the

positive output and the 1- pin of the Speakon should be treated as the negative output.

Note: Channel B is run out of phase internally, corrected by reversing the connections from the amplifier

output to the output connecter Channel A is run in phase. By having channel A and B operating in opposite

polarity, the energy storage in the power supply is more efficient. This is significant for signals below 100Hz

(sub bass etc.) and improves the power bandwidth.

Be sure to use balanced inputs on all measurement equipment (including oscilloscope probes) if you

are bench testing.

Note: in Bridge mode the link switch must be switched to “on”

and the gain controls of both channels must be set to the same level

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Martin Audio MA3.0 - V1.1 Betriebsanweisung Seite 10