2.The phase inversion feature is also very useful when the pola- rity of the XLR input jack has to be inverted to match the polarity of the microphone or the microphone cable. The pin assigment of the XLR connector is as follows: Pin 2 = hot (+) and Pin 3 = cold
3.Sometimes it is desirable to swop the polarity of a micro- phone because of the sound.
The MIKEMAN can also be used as a | 3 |
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signals. The input sensitivity of the preamplifier stage is reduced by 35 dB by pressing the
Condensor microphones require a supply voltage of 48 V DC which supplies the microphone via the balanced audio lines (pins 2 and 3). When the supply voltage is switched on, a phantom circuit is formed whereby the 48 V DC supply voltage is applied simultaneously to the two supply lines
There is no DC voltage between the two modulation lines which is why dynamic microphones can be used when the phantom voltage is switched on, without this doing the microphones any harm.
The influences of noise voltages which can superpose the DC supply voltage such as hum loops and parasitic currents in the cable screen are reduced by the phantom power supply. Moreover, this type of connection is particularly resistant towards RF.
As there is no potential difference between the +/- supply lines, the connection technique of the phantom supply is compatible with moving coil and ribbon microphones.
All microphones with balanced floating output, i.e. also micro- phones equipped with tubes can be used when the phantom voltage is switched on.
WARNING: It is essential to switch the phantom supply off if other types of microphones are used. A line signal source or an unbalanced microphone may only be used if the phantom supply is switched off.
The output peak levels (PPM values) are indicated on the LED display in steps of 3 dB from
4 | 48 V |
| Phantom Power |
Phantom power according to DIN 45 596 / IEC
5PPM Meter
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