The power supply module is mounted on the Adequate ventilation must be provided by allowing bottom of the PS 289. After a period of time it will sufficient space around the sides and rear of the feel hot to the touch on top and bottom. This is normal and should be no cause for alarm.
In case 100/240 V AC power is not available, the With this switch the pin 1 of the AUX input XLR is PS 289 can be powered by a DC supply (12 – 28 lifted from ground when in “Lift” position.
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