MASTER
The PROTECT indicator lights when one of the PowerMate’s extensive protection circuits – against thermal overload, HF-induction, DC at the outputs, and SOAR-protection – is activated. When the PowerMate is in protect mode, the speaker outputs are muted and the amplifier inputs are short circuited to prevent the power amp from being damaged.
In this case you should first check whether the ventilation louvers are blocked. Another cause could be, that you have connected more than three 8ohms speaker systems per power output. Please also disconnect the SPEAKON connectors and check the speaker cables for short circuits.
During power-on operation the PROTECT LED always lights for about two seconds and the internal fans run at full speed, signalizing that the PowerMate’s protection circuitry is operational.
45. MASTER LED-DISPLAY
The PowerMate offers two 12-segment LED-chains for optical monitoring the output levels of the L/R master signals. The indication range of the LED-meter is 40dB, indicating the levels that are present at the main outputs in dBu. The meter’s 0dB mark is referenced to a 0dBu output signal at the mixer output. Further increasing the level leads to the power amplifier’s maximum input level of +6dB – equaling an output power of 700 watts into 4 ohms per channel. Although higher levels are being displayed, the power amp’s processor already limits the signal, which is indicated by the lit LIMIT LED in the status display.
46. STANDBY
Pressing the STANDBY button mutes the output signals at the main outputs, EQ outputs and MONO output.
Caution: The monitor outputs AUX3/4 are still operational. Because the signal flow between MAIN INSERTS and MAIN OUTPUTS is interrupted, the signal feed to the internal power amplifier is also interrupted. The STANDBY LED lights indicating that stand-by mode is engaged and that input channel signals are not output via the speaker systems. However, audio signals connected via 2Track Return are still outputted, providing you with a very comfortable solution to play intermission music during performance breaks.
47. PFL MASTER
Engaging the master PFL-button, the PRE FADER mono master signal is routed to the headphones bus, so that it can be monitored via headphones output. The volume of this signal is not affected by the setting of the MASTER fader. The meter instrument in the master section is simultaneously switched, so that the left LED-chain indicates the level of the summed pre-fader L/R master signal channel (in dBu), which basically is the master bus level, while the right LED indicates the level of the summed post-fader master output.
48. MASTER L + R
Level controls to adjust the output signals of the left and right main outputs (MASTER).
Please, make sure to set the input channel faders or at least the master faders to their minimum position, or to engage the STANDBY switch, before connecting an external sound source to an input of the PowerMate. This will save you, your audience, and the equipment from unnecessary stress.
