JBL EVOi.sys User Manual

Also see for EVOi.net: User guide

Contents

Setting the SENS control to 10 gives approximate unity gainfor the LINE input. Some sound equipment, including homeconsumer products, may operate at a lower level (i.e., -10 dBv)than professional equipment and, therefore, will require settingSENS to a higher gain to reach the same output level.See Setting Up the System on page 9 to learn how to set SENScorrectly.100 Hz Hi-Pass FilterPressing this switch activates a steep 18 dB per octave filterwhich reduces the level of bass frequencies only. Use this filterin live PA (public address) situations to clean up the mix,reducing stage rumble or “popping” from microphones.Equalizer (EQ)The 3-band swept equalizer (EQ) allows fine manipulation ofthe frequency bands, and is particularly useful for improvingthe sound in live PA applications where the original signal isoften far from ideal and where slight boosting or cutting ofparticular voice frequencies can dramatically improve clarity.HF EQTurn HF to the right to boost high (treble) frequencies (at12 kHz and above) up to 15 dB, adding crispness to cymbals,vocals, and electronic instruments. Turn HF to the left to cutthe same frequencies up to 15 dB, reducing hiss or excessivesibilance which can occur with certain types of microphone.When HF is not being used, set it to the center-detent position.MID EQThis pair of controls work together to form a mid-frequency EQsection. The (lower) MID gain control provides 15 dB of boostor cut, just like the HF control, but the frequency at which thisoccurs can be set by the (upper) MID frequency control over arange of 240 Hz to 6 kHz. This allows some truly creativeimprovement of the signal in live situations, because the midband covers the range of most vocals. Listen carefully as you usethese controls together to find how particular characteristics of asignal (i.e., vocal) can be enhanced or reduced. When MID EQ isnot being used, set the (lower) MID gain control to its center-detent position.NOTE: The Q is fixed at 1.5.LF EQTurn LF clockwise to boost low (bass) frequencies (at 60 Hzand below) by up to 15 dB, adding warmth to vocals or extrapunch to synthesizers, guitars, and drums. Turn LF anticlock-wise to cut low frequencies by up to 15 dB to reduce hum,stage rumble, or to improve a mushy sound. When LF is notbeing used, set it to the center-detent position.AUX SendsUse these controls to set up separate mixes for foldback,effects, or recording. The combination of each AUX Send ismixed to the respective AUX Output at the rear of the mixer.For effects work, the signal should be post-fade, so it will fadeup and down with the fader. However, for foldback or monitorfeeds, the signal should be pre-fade, so it is independent of thefader. AUX 1 is always pre-fade, post-EQ, and would typically beused as a foldback or monitor feed. AUX 2 and AUX 3 arenormally post-fade, post-EQ for use as effects sends or additionalsubmixes, but for flexibility AUX 2 may be switched to pre-fade,post-EQ by pressing the associated PRE switch.All AUX Sends are muted, along with the other channel outputs,when the MUTE switch is pressed.LEX FXThe LEX FX control is identical to the post-fade AUX 3, but thesignal is sent to the internal bus which feeds the input of thebuilt-in Lexicon Digital Effects Processor. The output of theLexicon processor may be added to the mix or AUX 1 orAUX 2. The more you increase LEX FX, the more channel sig-nal you send to the Lexicon effects unit.continued on next page...765411M I X E R O P E R A T I O N