Sound Performance Lab Parametric Equalizer owner manual Dual, Active, Master EQ, Peak

All four channels of the Optimizer are identical. The cen- trally mounted Dual switch selects between stereo 2-band and mono 4-band operation. In Dual mode, a green status LED illuminates. For use with stereo signals such as complete mixes or sub-mixes, the Optimizer should be switched to Dual mode and both sets of channel controls set to the same position. Equalizers 1 and 2 work as a pair as do 3 and 4. However, in Mono mode, (Dual button out), the signal is automatically routed from the output of equalizer 2 to the input of equalizer 3, placing all four equalizer sections in series. Because the signal routing is controlled by the Dual switch and not by normalising connectors, no additional measures need to be taken when using the Optimizer with a patchbay system.

In Mono mode, both sets of outputs continue to function normally, allowing one signal to be tapped off after passing through filters 1 and 2 and another to be taken after passing through all four filter sections.

The Active switch is used to switch the individual equali- zer section in and out of the signal path. The Active switch operates as an electronic bypass. Take care when switching the Active function in and out, when listening at high moni- tor levels. Depending on the EQ settings a click may occur at the moment of switching, so dim or mute the monitors if necessary.

The Master EQ switch is a hard relay bypass which links the input socket directly with the output socket to bypass all filters by pressing just one button. Note: this only applies when using the balanced XLR inputs and outputs in stereo operation. When working with unbalanced signals, this switch has no effect. The switch has an integral red lamp which illuminates when Master-EQ is active.

To increase operation reliability especially in Live or On- Air situations, the Optimizer monitors the power supply´s primary and secondary voltages and switches automatically to hard bypass once certain tolerances have been exceeded.

A peak LED is fitted to each EQ section, which flashes at approximately 3dB below the level at which clipping occurs. If the Peak LED constantly flashes, the input to the equalizer

DUAL

In mono mode the signal is routed from output 2 to the input of 3, this places all four sections in series. You can tap out after 2 as well as 4, you can use this feature for blends on the mixer.

ACTIVE

Each of the four OPTIMIZER filters is equipped with an individual bypass switch.

MASTER EQ

The Master-EQ switch hard relay bypasses all filters with balanced XLR connectors.

PEAK

The Peak LEDs flash at approximately 3dB below the actual clipping level.

CONTROLS

OPTIMIZER 13