Mackie Onyx 820i Quick Start Guide - Page 8

Line-level Sources and Guitars Connect your line-level sources to the 1/4" TRS connectors. Channels 1 and 2 have mono inputs, and channels 3-4, 5-6, and 7-8 are stereo. Each input can accept TRS balanced or TS unbalanced sources. Line-level sources include keyboards, drum machines, electronic drum kits, CD players, iPod® docks, guitar preamp outputs and so on. If you just have a mono source and the mono channels are already in use, plug it into the left input (labeled left/mono) of the stereo channels, and the signal will appear equally on the left and right of the main mix. TAPE IN and TAPE OUT Use these RCA unbalanced stereo inputs to connect the line-level outputs from sources such as tape decks, CD/DVD players and iPod® docks. Engage the tape switch to listen in your control room or phones. Engage assign to main mix to add the sounds to the main mix, for example you can play intermission music, or listen to rare reference material of your band getting it right. The tape output is a copy of the main mix (post fader), suitable for analog recording, sending to the inputs of an external amplifier, or sound card etc. If you have a stereo source and want to use channels 1 and 2, plug the left side into channel 1, and set the pan control fully-left. Plug the right side into channel 2 and set the pan control fully-right. Channels 3-4 have a +4/-10 dB switch that allows them to accept line-level inputs from +4 dBu or -10 dBV devices. LINE/HI-Z Engage this switch if you want to connect guitars directly to the 1/4" line inputs of channels 1 or 2. For line-level sources, disengage this switch. To connect guitars to other channels, you will need a DI box, or they will not sound good, particularly the high frequency response. This applies to most mixers and channels in general, unless they have a hi-z switch SETTING THE CHANNEL GAIN 1. Press the solo switch at the bottom of the channel your source is connected to. The rude solo light will flash to remind you that the source playing in the control room, headphones, and the right main meter is the soloed channel. 2. Play your source at typical loudness levels. 3. Adjust the channel gain control until the right main meter level is hovering around the 0 dB mark (labeled "level set"). 4. Now the gain is set correctly, disengage solo. 5. The channel 3-4 gain control only affects the mic input. For channel 3 and 4 line-level inputs, follow steps 1 and 2, then if the right meter seems a bit low, engage the -10 dBV switch. LOW CUT Channels 1 and 2, and channels 3-4 have a low-cut switch that cuts bass frequencies below 75 Hz. The low cut of channels 1 and 2 affects the line and the mic inputs. The low cut of channels 3-4 affects the mic input only. EQUALIZATION Mono channels 1 and 2 have a 3-band EQ, with shelving-low, peaking-mid, and shelving-high controls. The mid frequency is adjustable from 100 Hz to 8 kHz. Inserts Mono Line Inputs Line/Hi-Z Low Cut Gain EQ Hybrid channels 3-4 have a stereo 4-band EQ, with shelving-low, peaking low-mid, peaking high-mid, and shelving-high controls. Stereo channels 5-6 and 7-8 have a stereo 3-band EQ with shelving-low, peaking-mid, and shelving-high. These EQ options allow a lot of adjustment to your line-level sources and guitars. Apply EQ wisely and carefully, like makeup. (Too much and things can turn Solo ugly.) 8 Onyx 820i Stereo Line-Level Inputs Tape Tape In/Out 1 ONYX MIC PRE 2 ONYX MIC PRE 3-4 ONYX MIC PRE AUX SEND BAL/UNBAL 1 AUX RETURN 1 BAL/UNBAL 2 L (MONO) MAIN OUT BAL/UNBAL L TAPE IN OUT L INSERT INSERT L (MONO) BAL/UNBAL 2 LINE IN 5-6 R LINE IN 7-8 R R 1 LINE BAL/UNBAL LINE HI-Z 48V 2 LINE BAL/UNBAL LINE HI-Z LINE 48V R +4dB -10dB 48V L (MONO) BAL/UNBAL R L (MONO) BAL/UNBAL R PREMIUM ANALOG MIXER w/ PERKINS EQ & FIREWIRE 30 U 20 30 U 40 20 GAIN 40 20 GAIN U 60 U 60 U -20dB +40dB -20dB +40dB 30 40 MIC GAIN U GAIN 60 -20dB +20dB U GAIN -20dB +20dB SEND U PRE POST EQ -15 +15 1k HIGH 12kHz SEND U PRE POST EQ -15 +15 1k HIGH 12kHz FREQ FREQ 100 8k U 100 8k U MID MID -15 +15 U -15 +15 U SEND U PRE POST EQ -15 +15 U -15 +15 U -15 +15 U HIGH 12kHz HIGH MID 2.5KHz LOW MID 400Hz SEND U PRE POST EQ SEND U INPUT LINE FW 1-2 -15 +15 HIGH 12kHz HIGH 12kHz -15 +15 U -15 +15 MID 2.5kHz U -15 +15 MID 2.5kHz U U -15 +15 LOW 80Hz AUX -15 +15 LOW 80Hz AUX -15 +15 LOW 80Hz AUX -15 +15 LOW 80Hz AUX -15 +15 LOW 80Hz AUX CTRL ROOM/PHONES SOURCE MAIN MIX TAPE FW 1-2 ALT 3-4 ASSIGN TO MAIN MIX OO MAX CONTROL ROOM OO MAX PHONES 0dB=0dBu LR 20 CLIP 15 10 6 3 0 2 LEVEL 4 SET 7 10 20 30 RUDE SOLO AUX MASTER SEND RETURN OO OO 1 MAX 2 MAX PAN L R OO OO 1 MAX 2 MAX PAN L R OO OO 1 MAX 2 MAX PAN L R OO OO 1 MAX 2 MAX PAN L R OO OO 1 MAX 2 MAX PAN L R PRE POST PRE POST OO OO 1 +15 RTN TO AUX1 2 +15 OO OO 1 +10 2 +10 AUX SEND 1-2 TO FW 5-6 POWER OO OO MUTE OL ALT 3-4 - 20 U MUTE OL ALT 3-4 - 20 U MUTE OL ALT 3-4 - 20 U MUTE OL ALT 3-4 - 20 U MUTE OL ALT 3-4 - 20 U MIC MAX LEVEL DESTINATION ASSIGN TO FW 7-8 U OO +10dB LEVEL SOLO 1 OO +10dB LEVEL SOLO 2 OO +10dB LEVEL SOLO 3-4 OO +10dB LEVEL SOLO 5-6 OO +10dB LEVEL SOLO 7-8 PHONES AUX 1-2 TALKBACK +10dB MAIN MIX Level Set