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Channel A and B into two separate | Channel A and B into one Speakon | Bridged mono |
Speakons. | (Stereo and |
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GUIDES
ENGLISH
Never connect either output terminal to ground or to some other output or input terminal (see warnings in chapter 1)
For normal
Pay attention to speaker polarity; loudspeakers connected out of polarity degrade sound quality.
Keep the loudspeaker cables as short as possible and use a good quality stranded cable. Do not use shielded wire, such as microphone or guitar cable. The loudspeaker cable reduces the power of the amplifiers in two ways:
It increases the load impedance and introduces resistive power losses.
WARNING: To prevent electric shock, do not operate the amplifier with any of the loudspeaker cable conductors exposed.
8 OPERATION
8.1Operating precautions
•Make sure that the power switch is set to “OFF” before connecting any input or output or operating the switches on rear panel. See pages 8 about installation.
•Make sure that the AC mains voltage is correct and the same as the one printed on the rear panel of the amplifier. See pages 8, about operating voltage and power consumption.
•Make sure that the operating mode switches on the rear panel, gain,link/ bridge, and
•It is always a good idea to turn down the gain controls during
8.2Powering up – Soft start
When you power up the amplifier it takes a couple of seconds to check its circuits. This is known as the
8.3Input attenuators
The two input level attenuators on the front panel adjust the signal level for their respective amplifier channel in all modes. They are calibrated in dB to help the setting up of active loudspeaker systems.
In bridged mode, both controls must be in the same position, so that the speaker load will be shared equally between the channels.
8.4Indicators
The
The
All material © 2007. Martin Audio Ltd. Subject to change without notice.
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Martin Audio – MA1.3s Amplifier