Rear panel controls
1)
Channel 1 female Neutrik Speakon connector for audio output
2)
Channel 2 female Neutrik Speakon connector for audio output
3)
Channel 1 Cannon XLR connectors for input signal
4)
Channel 2 Cannon XLR connectors for input signal
5)
AC main cord
6)
Cooling fan outlet
5
Protection
Turn-On/Turn-Off Muting
For about four seconds after turn-on, and immediately at turn-off, the amplifier outputs are muted.
Short circuit protection
A short circuit protection system safeguards the amplifier's output transistors under short circuits and
other stressful loads. It is completely inaudible when inactive. In case of short circuit, the
PROTECTION LED will be light.
Thermal protection
A DIGAM amplifier uses a continuously variable speed fan to assist cooling (the fan speed changes
in response to the amplifier's cooling needs). If the heat sink temperature reaches approximately
60°C, the TEMP LED starts to flashing. If the temperature is more then 70°C the thermal sensing
circuitry will mute both channels, the TEMP LED will be light permanently and the power supply will
be inhibited. Once the heatsink has cooled down, the amplifier will automatically unmute and the
TEMP LED will be unlighted. It will be possible to reduce the temperature reducing the output power.
DC fault protection
If DC or excessive subsonic energy appears at a channel output, an instantaneous protection circuit
will inhibit the power supply for both channels. Power supply shutdown is used in lie of speaker
relays, thereby improving the damping factor and reliability of the DIGAM amplifiers.
POWERSOFT
4
6
Fig. 2: Rear panel
ENGLISH -8
2
1
3
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