Mackie 8-BUS Series, Руководство пользователя

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4-4
D i g i t a l 8 • B u s
Connections
Aux Buses
The Digital 8•Bus has 12 analog aux send
outputs that can be used for monitor sends or
for connecting external effects devices. These
are eight mono and two stereo-pair TRS, line-
level output jacks. They are wired like this:
Tip = signal positive
Ring = signal negative
Sleeve = shield (ground).
SLEEVE (SHIELD)
TIP SLEEVE
TIP (HOT)
RING (COLD)
RING
TIP
SLEEVE RING
Use the buttons in the V-Pot Select section to
choose the aux sends for each channel. When an
AUX button is selected, the channel V-Pots
become aux send level controls. You can have up
to 8 mono aux sends (AUX 1–8) and two stereo
aux sends (AUX 9–10 and AUX 11–12) per
channel.
The versatile architecture of the aux sends
allows you to be creative and
flexible in your use of effects.
You can independently assign
each aux send to be pre- or
post-fader (see “Setting Aux
Sends Pre/Post Fader” in
Chapter 3). Aux Sends 1 and
2 are sent to the two internal
effects buses as well as to the
AUX 1 and 2 send outputs.
You can defeat the internal
effects signal by muting the
FX 1–4 faders in the
EFFECTS fader deck.
1
25
2
26
dB
10
5
5
U
dB
10
5
5
U
FX 2 FX 1
GROUP 2 GROUP 1
3
27
4
28
dB
10
5
5
U
dB
10
5
5
U
FX 4 FX 3
GROUP 4 GROUP 3
MUTE MUTE MUTE MUTE
Aux Sends 3–8 are independent analog
mono outputs, fed from the corresponding
internal aux buses. If additional D8•FX cards
are installed, these aux sends are directed to
their corresponding internal effects buses as
well. See Appendix F for more info on
installing D8•FX cards.
Aux Sends 9-10 and 11-12 are analog stereo
pairs (referred to as CUE 1 and CUE 2 on the
screen). There are two buttons in the V-Pot
Select Section associated with these stereo aux
sends, LEVEL and PAN. Select LEVEL to
adjust the stereo aux send level using the
channel V-Pot, and select PAN to adjust the left
and right aux send balance using the channel
V-Pot.
When AUX 9-10 or AUX 11-12 is selected as
a Cue Mix source, the signals from those aux
buses are sent to the Headphones and Control
Room outputs.
So where are the effects return jacks? You
can use any of the unused channels 1–24 as
external effects returns. Follow the Input
Sensitivity Adjustment Procedure for Channels
1-24 in Chapter 6 to set the TRIM control for
the channels used as effects returns, and set
the channel fader to adjust the amount of the
effect you want to mix into the main buses. You
can monitor the mix using headphones or
control room speakers, and soloing the effects
return channel(s).
Connecting
Control Room
Monitors
There are two pairs
of 1/4" TRS stereo line-
level outputs provided
on the rear panel of the
Digital 8•Bus for
sending signals to
control room speakers.
These can be connected
to the inputs of an amplifier driving the control
room monitors, or directly to the monitors if
they are active (i.e., with built-in amplifiers).
Direct out with no signal interruption.
Insert only to first “click.”
Channel Insert jack
Channel Insert jack
Channel Insert jack
Direct out with signal interruption.
Insert all the way in to the second “click.”
For use as an effects loop.
(TIP = SEND to effect, RING = RETURN from effect.)
MONO PLUG
MONO PLUG
STEREO
PLUG
AUX
1
+48V
PH
LINE IN
INSERT
1
MIC
AUX 7 AUX 8
AUX 5 AUX 6
AUX 1
AUX 3
AUX 2
AUX 4
LEVEL TO TAPE DIGITAL TRIM
AUX 9
-
10 AUX 11
-
12
PAN PAN
1-24 1-48
MASTER OUT
CR
MAIN
CR
NEAR FIELD
L R
L R
L R