Unwanted " phaser " effect when recording and producing guitars through stereo SPDIF

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J-War
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2016/03/20 02:29:22 (permalink)

Unwanted " phaser " effect when recording and producing guitars through stereo SPDIF

Hello there,

I am using Sonar X3 producer and a Kemper Profiler hooked to my Fireface UC using SPDIF. (For those who don't know the Kemper, let's say it's roughly like a " AXE FX " from Fractal Audio but without build-in audio interface)
 
I am getting a quite annoying and unwanted " phaser " or " flanger " effect when playing two takes i just recorded.
Each take is using a simple Peavey 5150 patch whith " crunch " type disto (no efx / reverb / delay) and each take has been panned 50%L and 50R. Each track goes directly to my Fireface main out, no busses are used.

As recording through SPDIF gives me a stereo wave for each take, i was wondering if it could be the cause ?

For example, In my mix at the same time i have the rythm guitars 100% L/R and lead guitars 50 % L/R.
Could it be a problem to record in stereo 2 takes of a same riff or lead and pan these 2 stereo takes ?
Actualy, if iam not mistaken even if each take comes in stereo signal, both sides of the wave are identical.

Help needed please.
Thanks in advance.
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    Sanderxpander
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    Re: Unwanted " phaser " effect when recording and producing guitars through stereo SPDIF 2016/03/20 04:00:44 (permalink)
    Did you set the RME to clock slave via S/PDIF? Unfortunately the Kemper can only be clock master.

    I just did this two weeks ago with a friend and his Kemper by the way. Only I have an UCX. But it's perfectly possible in any case. Another idea perhaps for you; we put his guitar in the Fireface first, used Totalmix to route it to S/PDIF out, connected that to the Kemper and then back to the FF again with S/PDIF. This had the benefit of being able to record the dry guitar along with the effected one, so we could "reamp" after tracking. We actually did end up doing so with two parts when they wouldn't blend so well. Pretty neat.
    #2
    J-War
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    Re: Unwanted " phaser " effect when recording and producing guitars through stereo SPDIF 2016/03/20 04:16:14 (permalink)
    Absolutely, i am using 44.1 and the sync is set to external/spdif.
    I am actualy trying to avoid reamping for various reasons tho.
     
    So in your opinion, no problems with panning multiple stereo takes ?
     
    Thanks for the help and advices ;)
    #3
    Sanderxpander
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    Re: Unwanted " phaser " effect when recording and producing guitars through stereo SPDIF 2016/03/20 04:53:15 (permalink)
    I haven't noticed any. But of course a single mic'd speaker cab is never stereo. So unless you have something in there that makes it stereo (reverb, stereo delay, a second panned cab) I would definitely recommend recording in mono even if it's just to save disk space. You can just take either side of the S/PDIF input.
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    J-War
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    Re: Unwanted " phaser " effect when recording and producing guitars through stereo SPDIF 2016/03/20 05:16:33 (permalink)
    Sure, i understand. Anyway i don't use any reverb/delay or cab tricks, everything is processed into the DAW. So you're right, it makes sense to record in mono ;)
    #5
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