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56 DMM 12BC
Operation
TREBLE
Figure 21: TREBLE function
All the input and output channels can be controlled in the "TREBLE" mode.
Figure 22: Adjustment range for the function
The "TREBLE" function raises or lowers the audio signal's treble range. The filter is designed
as a first order treble shelving filter. The cut-off frequency is 10 kHz.
The settings range from -14 dB to +14 dB. Only the upper middle LED lights up (0 dB) with
linear adjustment. More LEDs light up on the left side as the rotary knob is turned further to
the left. More LEDs light up on the right side as the rotary knob is turned further to the right.
Figure 23: Increments on the LED ring for the TREBLE function
The adjustable increments are equal to 2 dB per click and also correspond to one LED.