25.MAIN L, R GRAPHIC EQ
– This 7-band graphic EQ is used to customize the sound of the MAIN L, R mix output. This EQ section affects the signals found in the MAIN (XLR), headphone, line-level, and speaker-level jacks (when confi gured to MAIN L, R). The 7 slide controls each represent a frequency band: 125, 250, 500, 1K, 2K, 4K, and 8K. Each of the slide controls adjusts the audio level of its particular frequency with up to a 12dB boost or cut. If left in the center position, there will be no change to audio level the frequency. It is important to remember that EQ controls are meant to provide precise adjustments to an audio signal, and not overly infl ate a signal resulting in an unnatural sound. Human hearing can adapt quite quickly to a particular sound signature, so it is best to fi nd a suitable setting and leave it there until a change in the source audio or environment requires a change in the EQ.
26.MAIN L, R LEDs – These stereo LEDs display the output level of the MAIN L, R mix. The LEDs are marked from –10dB to +6dB. It is important to monitor these LEDs as they can prevent a distorted audio signal and possible damage to your speakers. An optimal signal will be mostly contained to the green LEDs (up to 0dB), with occasional peaks into the fi rst red LED (+3dB). If the mix reaches +6dB, it is strongly advisable to reduce the MAIN L, R LEVEL control.
27.MAIN L, R LEVEL – This control adjusts the signal level of the MAIN L, R mix to be sent to the line-level outputs, MAIN L, R LEDs, headphone and speaker-level outputs. This control provides a one-touch adjustment to the MAIN L, R mix, especially useful when the power amp assign is set to MAIN L, R output. When the MAIN L, R LEDs enter the +6dB range, use this control to make a quick adjustment. When the power amp assign is set to MAIN L, R+MONITOR, this control will only affect the mix sent to the MAIN (XLR), AUX and (L) speaker-level output.
28.DSP REV TO MAIN L, R – This control adjusts the amount of DSP effects that is applied to the MAIN L, R mix. This control is ideal for making quick on-the-fl y adjustments to the DSP effects level on the MAIN L, R mix which is routed to the line-level outputs and speaker-level outputs. When confi guring your DSP effects, this control is used after the MASTER EFFECT LEVEL control in the DSP controls panel. Note that when the power amp assign is set to MAIN L, R+MONITOR, this control will not adjust the DSP effects of the MONITOR mix.
