# Bug Report FX Insert Routs to Main R

**URL:** <https://forums.allen-heath.com/t/bug-report-fx-insert-routs-to-main-r/32026>\
**Category:** SQ Troubleshooting\
**Tags:** sq-5\
**Created:** [12 May 2026 10:32 UTC](https://forums.allen-heath.com/t/bug-report-fx-insert-routs-to-main-r/32026 "2026-05-12T10:32:51Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![felix\_stelzl](https://sea2.discourse-cdn.com/flex002/user_avatar/forums.allen-heath.com/felix_stelzl/32/8528_2.png) [@felix\_stelzl](https://forums.allen-heath.com/u/felix_stelzl)\
**Post date:** [12 May 2026 10:32 UTC](https://forums.allen-heath.com/t/bug-report-fx-insert-routs-to-main-r/32026/1 "2026-05-12T10:32:51Z")

</div>

**Bug Report – FX Insert Routing Issue on Mono Channel**

**Subject:** Right FX Channel Routed to Main Bus When Using FX Slot 5 on Mono Channel

Hello,

Today I encountered the following issue:

When inserting an effect on **FX Slot 5** of a **mono channel** , the **right FX channel is routed into the Main Bus** , regardless of whether the insert is enabled or bypassed.

I tested the same setup using **FX Slot 8** , and the problem did not occur there.

### Signal Flow

- 8x gooseneck microphones → **Group 1**

- Group 1 routed to Main Bus

- Insert on Group 1:

### Channel 40 Insert Path

- Input Dante 62  
 → Insert FX Slot  
 → Direct Out Analog 4  
 → DeFeedback AI  
 → Return to Input 15

### Observed Behavior

- When using **FX Slot 5** , the **right FX signal leaks into the Main Bus**.

- This happens even when the insert is bypassed or disabled.

- Repeating the exact same setup with **FX Slot 8** works correctly and does not produce the issue.

Please let me know if additional information or test files are needed.

Frimware 1.6.1 r4874