AEA TRP2 Owner's Manual page 9

pronounced the closer the distance. With some large transducer
microphones such as the AEA R44C proximity effect begins at
six feet and is extremely pronounced at a distance of one inch.
However, sometimes such strong low frequency content can mask
high frequency intelligibility. The TRP2's high-pass filter helps
diminish this low frequency energy.
Polarity
All inputs and outputs maintain proper polarity with each other
and international standards. The 3 pin balanced mic input and line
output connectors are wired Pin-2 + or high, and Pin-3 – or low.
As noted before, to prevent damaging the equipment in your
system, it is a good idea to test your microphone cables regularly
to determine whether they have any reversed connections.
Power Supply
An external switching power supply with a grounded AC plug is
used with the TRP2 so hum fields can be kept away from the high-
gain electronics. The power supply allows the TRP2 to be used in
any country without any modifications made to the unit.
The power supply is a universal switching supply, it provided 3
regulated outputs +/-18.5VDC and 52VDC, these voltages are then
regulated internally again to provide clean power for the unit.
The power supply transformer is not designed to be used in a wet
environment.
No-Blow Mode
Each channel of the TRP2 is equipped with individual internal
phantom power kill switches. Armed in the off position, the internal
toggle switch prevents accidental phantom power activation from
the P48 buttons on the TRP2 front panel.
Before accessing the internal switches, power down the TRP2 and
unplug it from any power sources. To access the internal power
switches, simply remove the screws from the top panel of the TRP2
using a screwdriver. Slide the switch to the OFF position to engage
No-Blow mode. ON and OFF positions are labeled on the unit.
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