KHE AUDIO ELECTRONICS AFX 8 Handbuch
Many thanks for purchasing the KHE AFX 8 FX-Loop Switcher! This gui e explains how to setup an link the AFX 8 to a
single ACS 8x4 (or ASX 8). If you nee assistance, on’t hesitate to ask for help at info@khe-au ioelectronics.com
Step 1:
Connect the AFX - CTRL OUT jack to the ACS 8x4 -
CTRL IN jack by the inclu e 5-pin MIDI patch cab e. This
connection enables the units to communicate with each other,
to exchange status an comman s in a network. Make sure
the in/outs are not mixe up an on’t use the MIDI IN jack for
this network connection!
Step 2:
Power-on both units. You’ll notice the CTRL ights
blink red / green an the switching operation oesn’t work.
This is norma : The system is in stan by - some a itional
steps are nee e to comp ete the setup.
Step 3:
The next step is to assign each switcher an
in ivi ual MIDI channel. This is nee e so each switcher has
an unique i entifier in the communication network. The AFX
gets set to MIDI Channe #1. It is alrea y set to #1 by efault,
so no action is nee e . The ACS 8x4 gets set to MIDI Channe #2.
See the next page on how to set the MIDI channe on the KHE switchers.
Once the correct MIDI channels are set on all units, all the CTRL ights of all switchers turn green. This shows the
communication between the switchers is establishe an the switching operation is release from stan by.
If they still blink re /green, check the wiring of the CTRL jacks an check the setting of the MIDI channel.
Step 4:
The last step is to ‘pair’ the AFXs to the ACS 8x4, to synchronize the switching operations.
1. Activate an amp an cab on the 8x4.
2. Enter the System Menu on the AFX by pressing the CTRL button for 2 secon s.
3. Wait 5 secon s. The AFX automatically checks which switcher has an amp active an assigns its switching
operation automatically to it.
4. Exit an save the System Menu on the AFX by pressing the CTRL button for 2 secon s.
The switching system is now ready to use.
If you select or change amps on the 8x4, you’ll notice the FX lights on the AFX ‘jump’ with the amp lights on the 8x4.
This shows the AFX an the 8x4/ASX are correctly paire an work in synchronization.
See the Master-FX-Loop Operation section on the next page.
AFX 8 – Setup Instructions
How to set the MIDI channe :
1. Enter the System Menu by pressing the CTRL button for 2 secon s, then
release it. The CTRL light starts to blink re , with one short blink inverval.
This shows Menu Layer 1 is active. The MIDI channel setting is on Menu
Layer 2.
On the AFX, the MIDI channel setting is on layer 1.
2. Enter Layer 2 in the menu by short-pressing the CTRL button. The CTRL
light starts to blink re 2 times, showing Layer2 is active.
3. In Layer 2, the active MIDI channel is represente by the lights of AMP 1
to 4 in binary co e. See the MIDI Channel Rea Out Chart. Each short-
press of switch AMP 1 increases the MIDI channel by +1.
To set the 8x4 to MIDI channel #2,
repeate ly short-press the AMP 1
switch until only AMP 2 light is on:
Note: On the AFX, use the FX/CTR button to increase the MIDI channel.
4. Exit an save the System Menu by pressing the CTRL button for 2
secon s, then release it.
Master-FX-Loop Operation / Bypass
By efault, the fx-loop of the AFX is in bypass (off) for all channels, which is shown by a dimmed red FX ight.
To activate the loop, short press the FX/CTRL button the AFX.
An activated oop is shown by a bright red FX ight.
The on/off setting of the loop is automatically save for each amp. It remembers the last state an recalls it
automatically when switching amps.
Notes:
To restore the factory settings, power-off the unit, press an hol the CTRL button, power-on the unit, wait 5
secon s an release the CTRL button. This performs a system reset an restores all efault settings.
If multiple KHE switchers are linke in a setup, i.e. 3x ACS 8x4 an 2x AFX, you can arrange an stack the units
as you like. The wiring of the CTRL jacks gets aisy-chaine : Connect the CTRL OUT from the top unit to the
CTRL IN to the next unit. Repeat this wiring scheme for all units. The top unit gets assigne to MIDI channel #1.
The MIDI channel gets increase by +1 for each unit, following the wiring of the CTRL jacks. Every unit must
have an in ivi ual MIDI channel assigne (Don’t skip channel numbers). Make sure to pair the AFX to it’s
master-switcher.
The linke system can be remotely conrolle by a single MIDI footswitch. Connect MIDI controller to any of
the MIDI IN jacks of the units. Make sure the controller MIDI channel matches the channel setting of the KHE
unit it is connecte to. Use comman CC127 / Value 127 to toggle the master-fx-loop on or off. For AFX 8 with
serial number starting with B3 or lower, always connect the MIDI controller to the AFX MIDI IN jack.
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