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Difference between revisions of "FX Loop block (legacy)"

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<font color=red>Note: this page discusses a feature of legacy products. The contents are frozen and will not be updated.</font>
 
__TOC__
 
__TOC__
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=Available on which products=
  
[[image:Axe-Fx XL Plus rear.png|400px]]
+
* '''Axe-Fx III''' and '''FM9''' and '''FM3''': no
 +
* '''Axe-Fx II''': 1 block
 +
* '''FX8''': no
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* '''AX8''': 1 block
  
=Available on which Fractal Audio products=
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=Channels or X/Y=
* '''Axe-Fx III''': no.
 
* '''Axe-Fx II''': yes.
 
* '''FX8''': no.
 
* '''AX8''': yes.
 
  
=X/Y and channels=
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* '''Axe-Fx II''': no
* '''Axe-Fx III''': n/a.
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* '''AX8''': no
* '''Axe-Fx II''': no.
 
* '''FX8''': n/a.
 
* '''AX8''': no.
 
  
=Using FX Loop as an auxiliary input, auxiliary output or effects send/return loop=
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=About the FX Loop block (FXL)=
  
FXL enables the effects loop on the Axe-Fx II and AX8. The effects loop is: Input 2/Effects Return and Output 2/Effects Send. You can use this for a Four-Cable-Method (4CM)  rig, to connect a second instrument or sound source, to insert a stomp box or rack device, to enable multiple output signals, etc.
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The I/O 2 loop on the Axe-Fx II and AX8 can operate as an effects loop: FX Send (Output 2) and FX Return (Input 2). Alternatively, Input 2 and Output 2 can operate as auxiliary Input and Output ports.
  
Use FXL to:
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The FX Loop block (FXL) enables the effects loop on the layout grid.
* Let a signal from Input 2 enter the grid (Effects Return).
 
* Send a signal through Output 2 (Effects Send).
 
  
More information in the Owner's Manual.
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Possible uses:
  
=Setting levels=
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* Four Cable Method (4CM)
 +
* connect an additional instrument
 +
* insert an external device in the routing
 +
* duplicate or create independent output signals
  
The Level value is stored per scene in the AX8 and Axe-Fx II. This does not apply to the Axe-Fx III.
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Note: to make Output 2 act only as a duplicate of Output 1, the use of the FX Loop is not needed. Just enable ECHO OUTPUT 2 in the I/O menu. Make sure not to use the FX Loop block in this case, because it will override the ECHO OUPUT 2 setting.
  
Be aware that Input 2 and Output 2 on the Axe-Fx II are set at +4dB line level. On the AX8 these settings are adjustable.
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On the Axe-Fx III and FM3, the [[Input block]] and [[Output block]] replace the FX Loop functionality.
  
When using FXL as an auxiliary output or effects loop, don't forget there's a physical OUT2 knob on the Axe-Fx II and AX8, which sets the output level.
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=Setting output levels=
  
=Parameters table=
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'''Signal to next block''' — LEVEL in the FX Loop block sets the level of the signal going to the block AFTER the FX Loop block. The Level value is stored per scene.
  
{| class="wikitable"
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'''Signal to Output 2 port''' — Use the OUT 2 knob on the front/top panel to set the outgoing signal level from Output 2. Note: to maintain unity gain on the AX8, you need to set the OUT knob on the hardware to its maximum position.
|-
 
! '''Parameter'''
 
! '''Axe-Fx III'''
 
! '''Axe-Fx II'''
 
! '''AX8, (FX8: n/a)'''
 
|-
 
|
 
! n/a
 
!
 
!
 
|-
 
|
 
! n/a
 
!
 
!
 
|-
 
|
 
! n/a
 
!
 
!
 
|-
 
|
 
! n/a
 
!
 
!
 
|-
 
|
 
! n/a
 
!
 
 
|}
 
  
=Tips and tricks=
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'''Nominal output level''' — The default nominal output level of the AX8 and Axe-Fx II is +4 dB. This can be changed to -10 dB in the I/O menu.
 +
 
 +
=Echo Output overrides FXL=
 +
 
 +
The ECHO OUTPUT 2 parameter in the Setup menu lets you send a copy of the Output 1 signal through Output 2. The OUTPUT 2 MODE parameter determines whether this signal is stereo or mono.
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 +
IMPORTANT: if a preset contains the FX Loop block, ECHO OUTPUT 2 is ALWAYS ignored.
 +
 
 +
=Tips, tricks and troubleshooting=
 +
 
 +
==Signal with Cab Modeling to FOH, signal without Cab Modeling to backline==
 +
 
 +
Use the FX Loop block to create two separate output signals:
 +
 
 +
# to FOH / studio monitors / headphones etc.: with cab modeling
 +
# to backline (power amp and traditional cab): without cab modeling
 +
 
 +
Create a regular routing with the Cab block at the end. Insert the FX Loop block, either in series right before the Cab block, or on a separate row (connected to the block before the Cab block). Make sure that the FX Loop block is connected to the Output block. Connect OUT1 to the FOH / FRFR etc., and OUT2 to the power amp. Use the OUT 1/2 knobs on the top/front panel to control the output levels.
 +
 
 +
The Axe-Fx II and AX8 provide a factory preset specifically created for this task.
  
 
==Route a signal from Input 2 to Output 2==
 
==Route a signal from Input 2 to Output 2==
  
Note: this trick does not work on the AX8, because it requires the Feedback Send/Return blocks.
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The trick below does not work with the AX8, because it requires the [[Send_and_Return_blocks|Send and Return blocks]].
  
 
You can connect an instrument, music player etc. to Input 2, use FXL to let its signal enter the grid, and then send the processed signal to Output 2:
 
You can connect an instrument, music player etc. to Input 2, use FXL to let its signal enter the grid, and then send the processed signal to Output 2:
 +
 
# Connect the external gear to Input 2.
 
# Connect the external gear to Input 2.
 
# Select the correct Input Mode for Input 2 in I/O > Audio.
 
# Select the correct Input Mode for Input 2 in I/O > Audio.
# Add a Feedback Return block to a separate row. Set Mix and Level to 100, to start with.
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# Add a Return block to a separate row. Set Mix and Level to 100, to start with.
# Add a FXL block after Feedback Return (and effect blocks if desired). Set Level at 100.
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# Add a FXL block after Return (and effect blocks if desired). Set Level at 100.
# Add a Feedback Send block after FXL, with Send at 100.
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# Add a Send block after FXL, with Send at 100.
 
# Turn up Output Level on the front panel to get signal out.
 
# Turn up Output Level on the front panel to get signal out.
  
The described routing lets the signal from Input 2 enter the grid through FXL, to be processed by the effect blocks after FXL. FXL's Level parameter sends signal to Feedback Send, which routes the signal back to Feedback Return. From there it enters FXL again, but this time to send the signal to Output 2.
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The described routing lets the signal from Input 2 enter the grid through FXL, to be processed by the effect blocks after FXL. FXL's Level parameter sends signal to Send, which routes the signal back to Return. From there it enters FXL again, but this time to send the signal to Output 2.
  
If you want this routing to go to Output 1 as well, connect Feedback Send to the grid's output. WARNING: this will cause extremely loud and high-pitched feedback when nothing is connected to Input 2!
+
If you want this routing to go to Output 1 as well, connect Send to the grid's output. WARNING: this will cause extremely loud and high-pitched feedback when nothing is connected to Input 2!
  
 
If you want to add signal from Input 1 to Output 2, connect that row to FXL.
 
If you want to add signal from Input 1 to Output 2, connect that row to FXL.
  
==Use FXL's stereo channels for two separate mono connections==
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==Split FXL into a mono effects loop and an auxiliary output==
 
 
The FXL block is stereo, so by panning you can have an external loop and still use the FXL's auxiliary output.
 
 
 
==Create two effects loops==
 
  
<blockquote>[http://forum.fractalaudio.com/threads/second-fx-loop-block.129270/#post-1534113 (Mr Fender)]: "Put the FX Loop block in front of the amp block and hard pan the signal going into the FX Loop block from that row hard left. In the amp block, set input select to left only. Put a feedback send block before your cab block. Put a feedback return block in another row before the FX loop block and set its balance to hard right. Connect the feedback return block output to the FX Loop block input. The rear Input 2 L and output 2 L jacks are then used for pre-effects and output 2 R is used to feed your power amp and cab on stage. The front panel output 2 knob will control both sides together, so you'll have to play with the levels in the FX loop and feedback blocks to get it all set right."</blockquote>
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The FX Loop block is stereo. By panning, you can have an external loop and still use it for an auxiliary output.
  
<blockquote>[http://forum.fractalaudio.com/threads/how-to-setup-2nd-fx-loop-using-send-return-blocks-in-series.132296/#post-1566162 (Bakerman)] "It's possible to use the FX Loop as two mono loops in series, with a certain routing using feedback send/return."</blockquote>
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<blockquote>'''FRACTAL AUDIO QUOTES'''<HR>
  
=Troubleshooting=
+
<blockquote>
 +
Put the FX Loop block in front of the amp block and hard pan the signal going into the FX Loop block from that row hard left. In the amp block, set input select to left only. Put a feedback send block before your cab block. Put a feedback return block in another row before the FX loop block and set its balance to hard right. Connect the feedback return block output to the FX Loop block input. The rear Input 2 L and output 2 L jacks are then used for pre-effects and output 2 R is used to feed your power amp and cab on stage. The front panel output 2 knob will control both sides together, so you'll have to play with the levels in the FX loop and feedback blocks to get it all set right.
  
==FXL versus Echo Output parameter==
+
[http://forum.fractalaudio.com/threads/how-to-setup-2nd-fx-loop-using-send-return-blocks-in-series.132296/#post-1566162]
 +
It's possible to use the FX Loop as two mono loops in series, with a certain routing using feedback send/return.
 +
</blockquote>
 +
</blockquote>
  
ECHO OUTPUT in the I/O menu provides an alternative way. It copies the signal from Output 1 and sends it through Output 2. OUTPUT 2 MODE determines whether it's a stereo or mono signal.
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==Add sound from the computer to the output==
  
But: if a preset contains the FXL block, the parameter ECHO OUTPUT 2 is always ignored.
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Set USB Digi SOURCE in the I/O menu to OUT 2. [http://forum.fractalaudio.com/threads/just-discovered-something-quite-cool.108670]
  
==Preventing a feedback loop==
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==AX8: prevent a feedback loop==
  
The Axe-Fx II has a sensor on Input 2. If nothing is connected to Input 2, the effects loop will not run, which prevents feedback loops. [http://forum.fractalaudio.com/axe-fx-ii-bugs/58172-clipping-issue-if-input-2-not-connected.html#post727937 source]
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The Axe-Fx II has a sensor on Input 2. If nothing is connected, the effects loop will not run, which prevents feedback loops. [http://forum.fractalaudio.com/threads/clipping-issue-if-input-2-is-not-connected.58172/#post-727937]
  
The AX8 does NOT have this sensor. So in the AX8 you ALWAYS have to put FXL in a branched off (parallel) path, if you use it for a separate output signal.  
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The AX8 does not have this sensor. That's why you should ALWAYS put the FX Loop in a split (parallel) path, when using it to create a separate output signal.
  
==Avoid feeding Output 1==
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==Avoid feeding signal to Output 1==
  
When FXL is used to send signal to Output 2, it probably should not feed Output 1 as well. In that case do not connect FXL to the grid output. If connecting FXL to the output block cannot be avoided, turn down FXL's level to -80. In the odd case that this does not suffice, set the FXL's and output mixer row's Balance controls oppositely.
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If the FX Loop block is used to send a signal to Output 2, it probably should not feed Output 1 as well. In that case do not connect the FX Loop block to the grid output. If that can't be avoided, turn down FXL's LEVEL to -80. In the odd case that this does not suffice, set the BALANCE controls in the FX Loop block and output mixer oppositely.
  
=More information=
+
==Change FX Loop from stereo to split==
  
* The Level parameter in the FXL block affects the signal flow to the block AFTER the FXL block, not the signal to OUT 2.
+
[http://forum.fractalaudio.com/axe-fx-ii-discussion/59204-split-stereo-fx-loop-trick-dweezil.html How to change FX Loop from stereo to split]
* If you use FXL as an auxiliary output (OUT 2) and connect it to the end of the grid, turn down its Level to prevent passing signal to OUT 1.
 
* [http://forum.fractalaudio.com/axe-fx-ii-discussion/59204-split-stereo-fx-loop-trick-dweezil.html How to change FXL from stereo to split.]
 
* You can use the FXL block to integrate computer effects. Set I/O > USB Digi Source to: OUT 2. [http://forum.fractalaudio.com/threads/just-discovered-something-quite-cool.108670/ source]
 
  
 
[[category:Axe-Fx2]]
 
[[category:Axe-Fx2]]
 
[[category:AX8]]
 
[[category:AX8]]
[[category:Sounds]
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[[category:Sounds]]
 +
[[category:All]]

Latest revision as of 12:31, 1 November 2024

Note: this page discusses a feature of legacy products. The contents are frozen and will not be updated.

Available on which products

  • Axe-Fx III and FM9 and FM3: no
  • Axe-Fx II: 1 block
  • FX8: no
  • AX8: 1 block

Channels or X/Y

  • Axe-Fx II: no
  • AX8: no

About the FX Loop block (FXL)

The I/O 2 loop on the Axe-Fx II and AX8 can operate as an effects loop: FX Send (Output 2) and FX Return (Input 2). Alternatively, Input 2 and Output 2 can operate as auxiliary Input and Output ports.

The FX Loop block (FXL) enables the effects loop on the layout grid.

Possible uses:

  • Four Cable Method (4CM)
  • connect an additional instrument
  • insert an external device in the routing
  • duplicate or create independent output signals

Note: to make Output 2 act only as a duplicate of Output 1, the use of the FX Loop is not needed. Just enable ECHO OUTPUT 2 in the I/O menu. Make sure not to use the FX Loop block in this case, because it will override the ECHO OUPUT 2 setting.

On the Axe-Fx III and FM3, the Input block and Output block replace the FX Loop functionality.

Setting output levels

Signal to next block — LEVEL in the FX Loop block sets the level of the signal going to the block AFTER the FX Loop block. The Level value is stored per scene.

Signal to Output 2 port — Use the OUT 2 knob on the front/top panel to set the outgoing signal level from Output 2. Note: to maintain unity gain on the AX8, you need to set the OUT knob on the hardware to its maximum position.

Nominal output level — The default nominal output level of the AX8 and Axe-Fx II is +4 dB. This can be changed to -10 dB in the I/O menu.

Echo Output overrides FXL

The ECHO OUTPUT 2 parameter in the Setup menu lets you send a copy of the Output 1 signal through Output 2. The OUTPUT 2 MODE parameter determines whether this signal is stereo or mono.

IMPORTANT: if a preset contains the FX Loop block, ECHO OUTPUT 2 is ALWAYS ignored.

Tips, tricks and troubleshooting

Signal with Cab Modeling to FOH, signal without Cab Modeling to backline

Use the FX Loop block to create two separate output signals:

  1. to FOH / studio monitors / headphones etc.: with cab modeling
  2. to backline (power amp and traditional cab): without cab modeling

Create a regular routing with the Cab block at the end. Insert the FX Loop block, either in series right before the Cab block, or on a separate row (connected to the block before the Cab block). Make sure that the FX Loop block is connected to the Output block. Connect OUT1 to the FOH / FRFR etc., and OUT2 to the power amp. Use the OUT 1/2 knobs on the top/front panel to control the output levels.

The Axe-Fx II and AX8 provide a factory preset specifically created for this task.

Route a signal from Input 2 to Output 2

The trick below does not work with the AX8, because it requires the Send and Return blocks.

You can connect an instrument, music player etc. to Input 2, use FXL to let its signal enter the grid, and then send the processed signal to Output 2:

  1. Connect the external gear to Input 2.
  2. Select the correct Input Mode for Input 2 in I/O > Audio.
  3. Add a Return block to a separate row. Set Mix and Level to 100, to start with.
  4. Add a FXL block after Return (and effect blocks if desired). Set Level at 100.
  5. Add a Send block after FXL, with Send at 100.
  6. Turn up Output Level on the front panel to get signal out.

The described routing lets the signal from Input 2 enter the grid through FXL, to be processed by the effect blocks after FXL. FXL's Level parameter sends signal to Send, which routes the signal back to Return. From there it enters FXL again, but this time to send the signal to Output 2.

If you want this routing to go to Output 1 as well, connect Send to the grid's output. WARNING: this will cause extremely loud and high-pitched feedback when nothing is connected to Input 2!

If you want to add signal from Input 1 to Output 2, connect that row to FXL.

Split FXL into a mono effects loop and an auxiliary output

The FX Loop block is stereo. By panning, you can have an external loop and still use it for an auxiliary output.

FRACTAL AUDIO QUOTES


Put the FX Loop block in front of the amp block and hard pan the signal going into the FX Loop block from that row hard left. In the amp block, set input select to left only. Put a feedback send block before your cab block. Put a feedback return block in another row before the FX loop block and set its balance to hard right. Connect the feedback return block output to the FX Loop block input. The rear Input 2 L and output 2 L jacks are then used for pre-effects and output 2 R is used to feed your power amp and cab on stage. The front panel output 2 knob will control both sides together, so you'll have to play with the levels in the FX loop and feedback blocks to get it all set right.

[1] It's possible to use the FX Loop as two mono loops in series, with a certain routing using feedback send/return.

Add sound from the computer to the output

Set USB Digi SOURCE in the I/O menu to OUT 2. [2]

AX8: prevent a feedback loop

The Axe-Fx II has a sensor on Input 2. If nothing is connected, the effects loop will not run, which prevents feedback loops. [3]

The AX8 does not have this sensor. That's why you should ALWAYS put the FX Loop in a split (parallel) path, when using it to create a separate output signal.

Avoid feeding signal to Output 1

If the FX Loop block is used to send a signal to Output 2, it probably should not feed Output 1 as well. In that case do not connect the FX Loop block to the grid output. If that can't be avoided, turn down FXL's LEVEL to -80. In the odd case that this does not suffice, set the BALANCE controls in the FX Loop block and output mixer oppositely.

Change FX Loop from stereo to split

How to change FX Loop from stereo to split