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12 SETUP MENU
THE I/O MENU
Reminder: You do not need to store settings in the
SETUP
menu. EXIT twice when finished.
I/O: INPUT PAGE
The Input page of the I/O menu contains four parameters that scale the input to the A/D converters:
Input 1/Instrument Level, Input 2 Level, Input 3 Level, Input 4 Level.
Remember that, except at very low settings (5% or less), input level adjustments do not affect gain levels or what
you hear. This is because as you adjust the level to the input of the A/D converter, the output of the converter
compensates accordingly, so your guitar signal level remains exactly the same when it reaches the grid and any
virtual amps or effects.
The global Input 1 Gain parameter adjusts the gain globally for In 1/Instrument. Use this, for example, to
compensate for a lower output guitar. This adjustment happens prior to the In 1 Gate.
I/O: AUDIO PAGE
PARAMETER
Description
Word Clock
INTERNAL
SPDIF/AES IN
This selects the clock source for the A/D and D/A converters as follows:
“INTERNAL”: uses the internal clock.
“SPDIF/AES IN”: uses the clock recovered from the current digital input. A
valid 48 kHz data stream must be present at the AES or SPDIF port for the Axe-
Fx III to operate properly.
SPDIF/AES Out Source
Output 1 or 2, Input 1 or 2
This allows you to specify which signal should be transmitted at the SPDIF or
AES digital output. Options include Output 1, Output 2, Input 1 or USB 7,8.
USB Output 7,8 Source
This determines whether computer USB audio inputs 7 and 8 will record the
signal from physical INPUT 1, INPUT 2 or INPUT 3.
USB Output Mapping
Determines whether the first two pairs of computer USB audio playback
outputs are mapped to Out 1 L+R and Out 2 L+R (in that order) or vice versa.
(See the red note on
for details).
USB Buffer Size
8–256
Set this to lower values for less latency with USB Audio, set to higher values
if you are experiencing distorted audio. Stop USB audio streaming when
changing this value so as to allow the buffer to reset properly. Streaming can
be stopped by closing the application sending data to the Axe-Fx III or by
disconnecting the USB cable.
Digital Input Source
Sets the global digital input source to your choice of AES, SPDIF, or USB
Channels 5/6. See "Input Source" below, for more on this.
Input Source (1, 2, 3, 3, 4)
ANALOG, DIGITAL
These four settings determine whether each input is fed by the corresponding
analog input jacks, or by the current Digital Input Source (above). For example,
to route USB audio to Input 1, set Digital Input Source to "USB", and set Input 1
Source to "Digital". See
.
Input 2 Mode
Input 3 Mode
Input 4 Mode
LEFT ONLY
L+R SUM
STEREO
These parameters determines whether signals at the corresponding input will
be processed in stereo, or in one of several mono modes (“LEFT”, “RIGHT”, or
“SUM L+R”).
It is important that you choose the correct setting based on what's actually
connected or present. Setting an input to “STEREO” and then not connecting
one of the two jacks will result in reduced levels.
