Mackie Onyx 820i Owner's Manual - Page 17

Channel Controls 1 ONYX MIC PRE 2 ONYX MIC PRE 3-4 ONYX MIC PRE AUX SEND BAL/UNBAL 1 AUX RETU The vertical channel strips look very similar, and have 1 BAL/UNBAL only a few differences between them. Each L channel works independently, and just controls the (MONO) signals plugged into the inputs directly above it. INSERT INSERT 2 L (MONO) BAL/UNBAL LINE IN 5-6 R LINE IN 7-8 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 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 SEND U PRE POST EQ -15 +15 1k HIGH 12kHz -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 -15 +15 HIGH 12kHz 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 1 MAX 1 MAX 1 MAX 1 MAX 1 MAX OO OO OO OO OO OO OO OO OO OO 2 MAX PAN 2 MAX PAN 2 MAX PAN 2 MAX PAN 2 MAX PAN L R L R L R L R L R Here are a few features and differences: Mono Channels 1 and 2 • These are mono channels, and their controls affect either the mono mic input or the mono line-level input. • Each channel has a hi-z switch, so you can connect guitars directly without the need for a DI box. • High pass filter affects both the mic and line inputs. • Gain control adjusts the mic level and line level. • The 3-band EQ has shelving high, shelving low, and peaking mid EQ with adjustable mid frequency. Hybrid Channels 3/4 • These hybrid channels have a mono mic input and stereo line-level inputs. The mono mic signal is sent in equal amounts to the left and right sides of the stereo channel. • High pass filter affects the mic input only. • Line inputs are switchable +4 dB /-10 dB. • Gain control adjusts the mic level only. • The 4-band EQ has shelving high, shelving low, with peaking lo-mid and peaking hi-mid. OO MUTE OL ALT 3-4 - 20 U +10dB LEVEL SOLO 1 OO MUTE OL ALT 3-4 - 20 U +10dB LEVEL SOLO 2 OO MUTE OL ALT 3-4 - 20 U +10dB LEVEL SOLO 3-4 OO MUTE OL ALT 3-4 - 20 U MUTE OL ALT 3-4 - 20 U +10dB LEVEL SOLO 5-6 OO +10dB LEVEL SOLO 7-8 Stereo Channels 5-8 • These stereo channels have two line-level inputs. • Gain control adjusts the line level only. • The 3-band EQ has shelving high, shelving low, and peaking mid EQ. • Channel 7 and 8 have a switch to select FireWire inputs instead of the analog line inputs. "U" like Unity gain Mackie mixers have a "U" symbol on almost every level control. It stands for "unity gain," meaning no change in signal level. The labels on the controls are measured in decibels (dB), so you'll know what you're doing level-wise if you choose to change a control's settings. Owner's Manual 17