Mackie SR408 / SR568 Owner's Manual - Page 23

Almost all other signals call for higher HPF frequency points (at least 80Hz). With these signals, there isn't much below 80Hz that you want to hear, and filtering it out gives the low stuff you do want much more definition. With HPF, you can safely boost LOW EQ and LOW-MID EQ. Many times bass shelving EQ can really benefit voices. Trouble is, adding LOW shelving EQalso boosts the infrasonic debris: stage rumble, mic handling clunks, wind noise, and breath pops. HPF removes all that debris so you can boost the LOW EQ without frying a woofer. CHANNEL OUTPUT CONTROLS Now that we've made it through the Channel's input controls, we have a signal that has been level-corrected, polarity-adjusted, HPF-ized, and beautifully shaded with EQ. It's ready to go out and meet the audience. The Channel output controls offer many ways to get this signal out of the console. Just to get a handle on things, we'll stick to the basic triedand-true methods and leave the wild routing schemes up to you. MUTE Point Before: EQ IN switch . Point After: Fader , PRE switch (AUX 1-4) . Muting a Channel removes the signal from these output paths: LEFT/RIGHT/CENTER mixes and SUBS (SUB 1-8 mixes) , AUX SEND MASTERS , AFL SOLO, and AFL Channel Meters. The INSERT SEND, PFL SOLO, and PFL Meter paths are not affected. Unlike the "latching" switches, which live in an up-or-down position, the MUTE switch is "momentary" - when you press it, it comes right back up. Pressing the switch toggles the electronic mute relay in the signal path's circuitry. If the Channel is muted, pressing the switch un-mutes it, and vice versa. An LED adjacent to the switch glows when a Channel is muted. The reason this switch is of the momentary persuasion is to enable you to change mute settings by other means, namely ULTRA MUTE™ . With ULTRA MUTE™, up to 100 different mute groups can be configured, enabling you to mute several signals at once. Not only that, but you can automate the muting of Channels (and other signal paths) via an external MIDI sequencer or the DATA port. We'll discuss all this in excruciating detail later on . U -15 +15 U -15 +15 2.5k EQ HI 12k HI MID 700 6k FREQ 500 15k U -15 +15 250 LOW MID 70 700 FREQ 45 3k U -15 +15 LOW 80Hz HPF 150 EQ IN 75 220 45 350 FREQ 30 800 LR PAN 40 MUTE dB 5 1-2 U 3-4 5-6 5 7-8 CENTER L-R 50 60 OO SOLO 23