Mackie D8B v5.1 User Manual
D8B Manual • Chapter 1 • page 12
Signal Flow
The previous diagrams help create an accurate
mental image of how the D8B functions. The signal
flow diagram in Figure 1-5 (on the next page) looks
more closely at the actual path the signal takes from
a point of origin to a chosen destination. This is a
simplified flow-diagram designed to provide a “bird’s-
eye” view. Follow the signal from left to right. Notice
the first thing the signal encounters, after the analog
inputs (including the analog trim), is the analog-to-
digital converter. The audio remains in the digital
domain from that point until it finally converts back
to analog at the main outputs, bus outputs, and
external aux sends. Simply follow the arrows to
discover the path—you never know where you might
end up. For a more detailed block diagram of the
D8B signal path refer to Figure 1-6.
flow diagram in Figure 1-5 (on the next page) looks
more closely at the actual path the signal takes from
a point of origin to a chosen destination. This is a
simplified flow-diagram designed to provide a “bird’s-
eye” view. Follow the signal from left to right. Notice
the first thing the signal encounters, after the analog
inputs (including the analog trim), is the analog-to-
digital converter. The audio remains in the digital
domain from that point until it finally converts back
to analog at the main outputs, bus outputs, and
external aux sends. Simply follow the arrows to
discover the path—you never know where you might
end up. For a more detailed block diagram of the
D8B signal path refer to Figure 1-6.
Keep Close Track of These Concepts
1. The Channel Select Display, next to the Master
L/R meters, always displays the currently
selected channel number no matter which Fader
Bank is selected. If an adjustment is required in
the Fat Channel, verify that the channel you
intend to adjust is displayed here.
selected channel number no matter which Fader
Bank is selected. If an adjustment is required in
the Fat Channel, verify that the channel you
intend to adjust is displayed here.
Outboard Effects,
MIDI Gear, Live
Room Mics, etc.
Room Mics, etc.
Tape or Bus Outs
Multitrack
From Tape to Channel
25–48 Inputs
Monitor Outs
to Speakers
Channels 1–24
Tracking Mixer
Tracking Mixer
Fader Bank 1
Channels 25–48
Monitor Tape
Fader Bank 2
Fader Bank 2
From Master Out to
Mixdown Recorder
From Mix Playback to
2-Track Input (Analog
2-Track Input (Analog
or Digital)
Figure 1-4 Basic Mixdown Setup
This is a basic mixdown setup. Live Mic/Line input source might be used for any audio
source: live vocals, instruments, or effects returns.
source: live vocals, instruments, or effects returns.
Monitor Mixdown Machine
at CONTROL ROOM in the
Master Section
Phones
Use this diagram for troubleshooting!
T
RACK
F
AST
CHANNEL
OL
LEFT
RIGHT
2
50
4
7
7
10
15
15
20
25
30
35
40
25
30
35
40
2. Be sure you verify the Bank Selection whenever
you need to make a change. At first it’s easy to
forget to check the Fader Bank status. However,
once you’ve adjusted to the layered consoles,
maneuvering throughout the entire console will
become second nature.
forget to check the Fader Bank status. However,
once you’ve adjusted to the layered consoles,
maneuvering throughout the entire console will
become second nature.
SHIFT
MASTERS
1-24
25-48
49-72
(TRACK)
(MONITOR)
BANK SELECT
EFFECTS
MIC/LINE
TAPE IN
33