12
PATCH PANEL
All we ask is that you perform the
Level-
Setting Procedure
every time you patch in
a new sound source. So stop worrying, and
start mixing!
MIC INPUT
Point Before: Balanced microphone-level
cable with male XLR connector (pin 2 = hot,
pin 3 = cold, pin 1 = shield).
Point After: Channel
.
The female XLR input can accept almost
any type of microphone — dynamic, con-
denser, ribbon or tube condenser.
+48 PH
(phantom power)
is switchable per Chan-
nel. Radio frequency interference (RFI) is
eliminated by means of close-tolerance bal-
anced circuitry, input filtering and the
SR40•8’s steel chassis. Mic-level signals can be
boosted by as much as 60dB.
Do not use this input simultaneously with
its associated
LINE IN
. Turn
TRIM
down
and engage
MUTE
before inserting or re-
moving mic cables. Do not insert unbalanced
single-ended cables (signal on pin 2, pin 3
open) unless pin 3 is first tied to ground (pin
1), and the
+48 PH
is switched off.
At the risk of stating the obvious, this is
where you plug everything in: microphones,
instruments, effects, headphones, and the ulti-
mate destination for your sound: PA system,
tape recorder and the like.
E-Z INTERFACE
Concerned about levels,
balancing, impedances,
polarity, or other interface
goblins? Don’t be. On your
SR40•8, you can patch anything almost any-
where, with nary a care. Here’s why:
• Every input and output is balanced (except
single-jack inserts, phones and RCA jacks),
using close-tolerance components to
ensure noise-free performance.
• Every input and output will also accept
unbalanced lines (except floating-ring
cables into XLR inputs — just tie the
cable’s ring to the shield first).
• Every input is designed to accept virtually
any output impedance.
• The XLR outputs can deliver 28dBu into a
600 ohm load.
• All the other outputs can deliver 22dBu
into a 600 ohm load.
• All the outputs are polarity-correct with
the inputs.
2
1
4
3
6
5
8
7
SUB INSERTS
(BAL/UNBAL)
SUB
1
SUB
2
SUB
3
SUB
4
SUB
5
SUB
6
SUB
7
SUB
8
LEFT
TALK BACK MIC
PHANTOM POWERED
INTERCOM
INSERT RETURN
MIC 25
INSERT SEND
25
DIRECT OUT
LINE IN
DATA
MIDI IN
MIDI OUT
(MACKIE 400-WATT POWER SUPPLY !)
DC POWER IN
SUB OUTPUTS
SEND
RETURN
SEND
RETURN
SEND
RETURN
SEND
RETURN
SEND
RETURN
SEND
RETURN
SEND
RETURN
SEND
RETURN
