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POWER/CLIP/LIMIT LED
The bi-color Power/Clip/Limit LED lights green after power is applied
and with lower level signals. If OPL is not being used, then the LED will
serve as a signal clip indicator. It will light red whenever the signal at
the tube’s output is about to clip. If the LED is constantly lit, reduce the
signal level with the Input gain control, or Activate the OPL circuitry.
When the OPL circuit is engaged, the LED will turn red whenever the
output signal peaks exceed the limiter's threshold, at which point the
limiter will reduce gain automatically, to prevent output clipping.
VU METER
The VU Meter gives an analog representation of the Tube MP Studio’s
output signal level. “0dB” on the meter repr6dBu at the ¼”
output jack and +12dBu at the XLR output jack. Besides showing the
average analog level, it is sensitive to attack transients. When not
using OPL, the VU Meter is a great indicator of how hard you are
running the tube. It also helps in setting a consistent level as you
change mics and instrument sources.
The VU Meter also reflects the impact of the OPL circuitry on the
signal. For example, if the signal is “in the red” on the meter, the meter
will reflect the attenuation of the signal when the OPL is activated, and
the signal is brought out of the “red” .
OUTPUT CONTROL
The Output Control sets the output level of the Tube MP Studio. When
the control is fully counterclockwise, there is no output. Turning the
control clockwise increases the level of the output signal. When setting
the Output level control, refer to the VU Meter for an accurate level
leaving the Tube MP Studio.
