MACKIE PROFESSIONAL MIC/LINE MIXERS WITH FX AND USB I/O PROFX16 - Manual (Page 23)

Owner's Manual 23
48. INT FX MUTE Switch and LED
When engaged, the internal effects
processor is muted, and its output
will not appear on the main mix or
monitor mix. The adjacent mute LED
will illuminate as a reminder that the
effects are muted. When power is first
applied, this LED will illuminate and
the FX will be muted for about 10
seconds while the little FX gerbils
inside settle down.
If this switch is not engaged, then
the internal effects are set free and
may be added as required to the main
mix and/or monitor mix.
R L R L R L R L
SUB 2 SUB 3 SUB 1
dB
30
20
10
10
O O
40
50
5
5
U
60
dB
30
20
10
10
O O
40
50
5
5
U
60
dB
30
20
10
10
O O
40
50
5
5
U
60
SUB 4
dB
30
20
10
10
O O
40
50
5
5
U
60
CR/PHONES
O O MAX
2-TRACK RETURN
TAPE
USB OUT
MAIN
LEVEL
U
+15
O O
dB
30
20
10
10
O O
40
50
5
5
U
60
MAIN
USB SUB 1-2
BREAK
(MUTES ALL CH)
49 50 51 52 53
55 56
54
Main & Subs Mix, USB Out,
2-Track Return, and more!
49. USB OUT Switch
This switch allows flexibility on the recordable
signals. The default switch configuration (disengaged)
allows the main L-R mix to be recorded for convenient
stereo mixes of the show. Engaging the switch routes
subgroups 1-2 over the USB connection to your favorite
DAW software for an alternate 2-track recording.
50. 2-TRACK RETURN TAPE / USB Switch
This determines if the 2-track return gets its signal
from the RCA “tape” inputs [34] (switch disengaged)
or USB (switch engaged).
51. 2-TRACK RETURN LEVEL
This knob controls the overall level to the mains of
the tape (RCA) or USB, depending on the position of
the 2-track return tape/USB switch [50]. This knob's
level ranges from off, through unity (center detent
position), on up to 15 dB of extra gain (fully clockwise).
52. BREAK Switch and LED
This important “take-a-break” switch quickly mutes
all the microphones and line-level inputs when the band
is between sets. This will prevent protestors or rogue
karaoke singers from storming the stage at the interval.
The monitor send [26] and FX send [27] are not
affected. If there is no sound coming out of the system,
be sure to check this switch first. The adjacent break
LED will come on as a reminder that the channels are
muted.
It is possible to play the stereo RCA tape inputs [34]
in the main stereo mix or play audio coming in from the
computer via the USB inputs. For example, a soothing
CD may be played while the band is off stage.
53. CR/PHONES
As one might expect, this knob controls the levels
of both the stereo control room and the headphones.
Make sure that this knob is fully off [counter-clockwise]
before selecting or adding a new source.