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ProFX8 and ProFX12
ProFX8 and ProFX12
The insert point is after the gain control [20], level
set LED [21], and low cut switch [22], but before the
channel EQ [23-25] and fader [31]. The channel signal
can go out of the insert jack to an external device, be
processed (or whatever) and come back in on the same
insert jack. To do this requires a special insert cable
that must be wired thusly:
Tip = send (output to effects device)
Ring = return (input from effects device)
Sleeve = common ground
Insert jacks can be used as channel direct outputs;
post-gain, and pre-EQ. See the connector section on
page 28 (fi gure F) showing three ways to use insert con-
nections.
12. STEREO RETURN
This is where you connect the outputs of your parallel
effects devices (or extra audio sources). The circuits
will handle stereo or mono, balanced or unbalanced sig-
nals. They can be used with just about any pro or semi-
pro effects device or line-level source on the market.
The signals coming into these inputs can be adjusted
using the stereo return [45] fader before passing onto
the main mix bus (see page 23). Signals coming in here
can also be quickly muted with the mute switch [44],
and the OL LED [43] will show you if your incoming
signal is too high.
Stereo Device: If you have a stereo parallel effects
device (two cords), use stereo return left and right.
Mono Device: If you have an effects device with a
mono output (one cord), plug that into the stereo
return left/mono, and leave the right unplugged. The
signal will be sent to both sides, magically appearing in
the center as a mono signal.
9. MONO LINE INPUTS
These 1/4" jacks share circuitry (but not phantom
power) with the mic preamps, and can be driven by bal-
anced or unbalanced sources.
To connect balanced lines to these inputs, use a 1⁄4"
Tip-Ring-Sleeve (TRS) plug.
To connect unbalanced lines to these inputs, use a
1⁄4" mono (TS) phone plug or instrument cable.
If you have a stereo source, and the stereo
and hybrid channels are in use, you can use
two mono channels. Traditionally, an odd-
numbered channel receives the left signal. For
example, you could feed the ProFX mixer a stereo signal
by inserting the device’s left output plug into the chan-
nel 1 jack (pan fully left), and its right output plug into
the channel 2 jack (pan fully right).
10. STEREO LINE INPUTS
These 1/4" jacks can be driven by stereo or mono,
balanced or unbalanced sources. They can be used with
just about any professional or semi-pro instrument, ef-
fect or tape player.
To connect balanced lines to these inputs, use a 1⁄4"
Tip-Ring-Sleeve (TRS) plug.
To connect unbalanced lines to these inputs, use a
1⁄4" mono (TS) phone plug or instrument cable.
If you just have a mono source, plug it into the left
input (labeled mono), and the signal will appear (as if
by magic) equally on the left and right of the main mix.
11. CHANNEL INSERT
These unbalanced 1/4" jacks are for connecting serial
effects processors such as compressors, equalizers, de-
essers, or fi lters.
We’ve included inserts for just the mono channels. If
you want to use this kind of processing on other chan-
nels, simply patch through the processor before you plug
into the ProFX mixer.
TAPE
IN
ST RETURN MAIN OUT PHONES
FOOTSWITCH
TAPE
OUT
L
R
L
(UNBALANCED)
R
FX SEND
LINE IN 4
INSERT
BAL /
UNBAL
(MONO) (MONO) (MONO) (MONO)
LINE IN 7
LINE IN 8
BAL /
UNBAL
LINE IN 9
MIC MIC MIC MIC MIC MIC
L
R
(MONO)
LINE IN 5
LINE IN 6
BAL /
UNBAL
L
R
LINE IN 10
BAL /
UNBAL
L
R
LINE IN 11
LINE IN 12
BAL /
UNBAL
L
R
BAL /
UNBAL
L
R
BAL /
UNBAL
L
R
MON SEND
BAL /
UNBAL
BAL /
UNBAL
4
LINE IN 3
INSERT
BAL /
UNBAL
3
LINE IN 2
INSERT
BAL /
UNBAL
BAL /
UNBAL
2
LINE/HI-Z IN 1
INSERT
1 5/6 7/8 9/10 11/12
LINE
HI-Z
PROFESSIONAL MIC/LINE MIXER WITH FX
7
6
8
11
9 9 9
10 10 10
11 11 11
10 12
13
15
16
17
14
6 6 6 6 6
18 19
“tip”
This plug connects to one of the
mixer’s Channel Insert jacks.
“ring”
tip
ring
sleeve
SEND to processor
RETURN from processor
(TRS plug)