LED in the MONO MASTER section (45) will blink to indicate that the signal on the MONO
LED display and at the headphone out is PFL. Selecting PFL allows the operator to monitor a
channel even with the channel muted, and is especially useful for cueing CDs/tapes. When
the PFL button is in the out position, the yellow channel LED will blink as an indication of
signal presence (-20 dBu).
(16) CHANNEL FADER
This control varies the signal level sent from the channel to the L/R, SUB, and/or MONO
master channels from (–
∞
) to +10 dB. The 0 position is unity gain, meaning no increase or
decrease in the level set by the GAIN control (4), and is the optimum setting for this control. If
the level is too quiet or too loud at unity gain on the FADER, the channel GAIN (4) may need
to be adjusted.
SUPER CHANNELS
[CHANNELS 21–22 (AAM 2443)
AND 29–30 (AAM 3243)]
Input connections and channel strip controls on SUPER
CHANNELS are the same as STANDARD CHANNELS with
the exception of INSERT jacks. In place of INSERT
connections, SUPER CHANNELS are equipped with:
(17) PAD
This switch attenuates (reduces) the input signal by 20 dB.
This allows accommodation of higher input levels without
clipping and is especially useful when close-miking high
sound pressure level (SPL) sources such as drums or guitar
cabinets. It is also beneficial for “hot” line sources such as
keyboards and some wireless microphones.
(18) POLARITY
This switch reverses the polarity of both the XLR and LINE input
connectors to compensate for an out-of-phase signal that would
otherwise cause frequency (phase) cancellations in the mix.
STEREO CHANNELS
[CHANNELS 23–24 (AAM 2443)
AND 31–32 (AAM 3243)]
STEREO CHANNELS offer the same channel strip controls as STANDARD
CHANNELS with the exception of the MID FREQ control (8). Center
bandpass frequency is set at 850 Hz. In place of the MID FREQ control,
STEREO CHANNELS offer independent gain controls for LINE and MIC
(XLR).
(19)
STEREO 1/4" LINE INPUTS
These TS jacks are unbalanced line-level inputs for stereo (L/R)
signals. They are connected in parallel with the STEREO RCA
LINE INPUTS (20). If you have a MONO line source, use a Y
cable or one of the channels with a MONO line input.
7
POLARITY
MIC
(BAL)
LINE
(BAL)
MIC
LINE
(BAL)
MIC
(BAL)
REVERSED
NORMAL
0 dB
-20 dB
PAD
POLARITY
REVERSED
NORMAL
0 dB
-20 dB
PAD
21
22
17
18
LEFT
RIGHT
LEFT
RIGHT
MIC
(BAL)
MIC
(BAL)
23s
24s
LEFT
INPUT
RIGHT
INPUT
LEFT
INPUT
RIGHT
INPUT
19
20
