Arturia Forums

Audio => AudioFuse => AudioFuse - Technical Issues => Topic started by: Oblique82 on April 24, 2020, 01:02:25 pm

Title: Clipping Left Channel Only
Post by: Oblique82 on April 24, 2020, 01:02:25 pm

I am recording via inputs 3/4

If the signal is too hot I get aweful clipping artefact via the left speaker output only. I am using main outputs not cue.

Why the asymmetry? Ex refund 0db does not cause the awe full sound in the right speaker but only the left one.

I have latest firmware etc

Title: Re: Clipping Left Channel Only
Post by: Terrym on April 25, 2020, 10:26:02 am

Hi, and welcome to the forum. what audio fuse do you have?   I have not seen this on any of the audio fuse  range.  have you tried switching the cables round to see if there is a difference?
Also maybe do a factory reset may help.

Title: Re: Clipping Left Channel Only
Post by: Oblique82 on April 28, 2020, 09:52:30 am

This is for the standard audifuse (the cube shaped one)

Swapping cables simply transfers the issue to the other speaker - indicating this issue with with the audiofuse

nil effect from a factory reset - it still persists... The unit is brand new of course - power via both USB and external adaptor

Title: Re: Clipping Left Channel Only
Post by: Oblique82 on April 28, 2020, 11:13:35 am

OK I had time to do more testing and provide better feedback to the community

the issue does NOT seem to occur with inputs 1 and 2

the issue also does not occur in "standard' more - only in "full power" mode

Title: Re: Clipping Left Channel Only
Post by: Terrym on April 28, 2020, 08:44:36 pm

Quote from: Oblique82 on April 28, 2020, 09:52:30 am

This is for the standard audifuse (the cube shaped one)

Swapping cables simply transfers the issue to the other speaker - indicating this issue with with the audiofuse

This says to me its not the AF  but the cable / signal if it jumps to the other side right?

Title: Re: Clipping Left Channel Only
Post by: Oblique82 on April 30, 2020, 12:01:54 am

Thanks for your interest Terrym

It’s not the cable. I believe what is happening is that inputs three and four have a DC offset. There is definitely some asymmetry with this reported by other users for example in this thread
https://forum.arturia.com/index.php?topic=92396.0

I believe that applying a very hot signal to these inputs can exceed the maximum digital headroom and this occurs asymmetrically due to the DC offset previously described. This may explain why using it in standard mode instead of full power mode does not allow this issue to occur

Title: Re: Clipping Left Channel Only
Post by: Terrym on April 30, 2020, 04:30:28 pm

Ok got it, but i do not see that here?  There is a new Firmware coming soon Just testing it at the moment maybe this is why as some power management will change i think.

Title: Re: Clipping Left Channel Only
Post by: Oblique82 on April 30, 2020, 11:57:19 pm

OK I look forward to testing the new firmware