- 5 -
Dynamic microphones should not be affected or damaged if they are
plugged into a line where Phantom power is present. However, if the
mic doesn't need it, do not use it. Some things are best left untested!
PHASE REVERSE SWITCH
The Phase Reverse switch is provided to reverse the phase of the
signal. This switch works on Pins 2 and 3 of the XLR output jack and
also reverses the polarity of the ¼” output jack. In the Normal position,
the signal is in-phase. In the Reverse (or “in”) position, Pins 2 and 3
are reversed and the signal is changed to 180 degrees out of phase.
In multiple microphone applications, mic placement can affect the
phase of the signals. If two microphones pick up the same signal from
different locations, the result can be a hollow or frequency “shifted”
sound. In some cases it may sound as if an instrument disappears if it
happens to be 180 degrees out of phase. Depressing the Phase switch
can remedy this. In general, if your sound is “thin” or “out of position”,
try reversing the phase to correct the problem.
OPL (PEAK LIMITER) SWITCH
Depressing this switch engages the OPL (Output Protection Limiter)
circuitry. This circuit precisely and accurately controls the output peak
signal level. This FET (field effect transistor) peak limiter has a fast
attack for peaks and slow release time. This helps you to prevent
clipping or overload of equipment that follows the Tube MP Studio,
such as the A/D converters on a sound card or digital recorder, in-ear
monitor systems, or live monitoring system. When engaged, the output
signal is limited to approximately 0dBu at the ¼” output jack and +6dBu
at the XLR output jack, with the Output control all the way up. The VU
Meter and LED indicator reflect the OPL circuit’s action.
