Main MIX Meters, FX to Main, Main Master Level

rather than boost the wanted range. You can reduce the level of some frequency bands where feedback occurs.

26. MAIN MIX METERS

Developed from a harmless ex-NATO hamster hypnotizer, these stereo meters show the level of the left and right main mix, after it has passed through the main master level (28) and graphic EQ (25).

The top LEDs are marked CLIP, and you should adjust the levels to stop these coming on.

When power ampliﬁ ers are pushed beyond their maximum rated output, the peak audio signals ﬂ atten out (clip), as they can go no higher than the amp’s power supplies. Clipping can easily damage your speakers, even those that are rated beyond what your power amp can deliver.

27. FX TO MAIN

This knob lets you adjust the overall level of the internal effects being added to the main mix. It is a stereo control, as the output from the internal effects processor is stereo and is added to the left and right main mix.

Adjust the FX level being added, compared to the other channels playing in the main mix.

At the fully-down position, no effects are added, the center U mark is unity gain, and 10 dB of effects gain is available at the fully clockwise position.

28. MAIN MASTER LEVEL

This knob controls the level of the main mix, and affects the meters (26), main line- level outputs (11), and the main speaker- level outputs (3). The level adjustment occurs before the main graphic EQ (25).

This gives you ultimate control over your audience. Adjust it carefully, with your good eye on the meters to check against clipping, and your good ear on the levels to make sure your audience is happy.

The control does not affect the tape output (10), monitor output (9), or internal power amp B if it is playing a monitor.

The main mix signals are off with the level fully down, the “U” marking is unity gain,

and fully up provides 12 dB of additional gain. This additional gain will typically never be needed, but once again, it’s nice to know it’s there. The level control is stereo, as it affects both the left and right of the main mix equally. This is the control to turn down at the end of the song when you want a gentle fade out into applause (or stunned and awkward silence).

29. MONITOR GRAPHIC EQ

This 7-band graphic equalizer adjusts the monitor mix output. It affects the line-level monitor output (9), and speaker-level output channel B (3) if it is playing a monitor.

Each slider allows you to adjust the level of its frequency band, with up to 12 dB of boost or cut, and no change in level at the center (0 dB) position. The frequency bands are: 125, 250, 500, 1 k, 2 k, 4 k, and 8 kHz.

The EQ section comes after the monitor

level (32), and just before the monitor meter (30). Therefore, as you adjust the EQ, keep an eye on the meter in case you over-do it and take the levels into clipping. As with the channel EQ, just take it easy.

The sliders will help you reduce the levels in the stage monitors of the frequency ranges that could cause feedback from nearby microphones.

30. MONITOR METER

This meter shows you the level of the monitor mix, after it has passed through the monitor level (32) and graphic EQ (29).

The top LED is marked CLIP, and you should adjust the levels to avoid this coming on.

31. FX TO MONITOR

This knob lets you control how much of the internal effects is added to the monitor output. The output from the internal effects processor is stereo, summed to mono and added to the monitor mix.

Adjust the FX level being added, compared to the other channels playing in the monitor mix.

At the fully-down position, no effects are added, the center U mark is unity gain, and there is 10 dB of effects gain at the fully clockwise position.