Help getting SPDIF working with RME Babyface Pro FS

  • I'm trying to get SPDIF working with my RME Babyface Pro FS.

    I first bought one of these optical to coax/coax to optical boxes, then bought another when I had issues and the Kemper manual said to use two SPDIF cables to avoid popping


    Amazon


    The issue is that with one cable going from Kemper SPDIF out to RME optical in is that I get a very digitally distorted signal, it's unusable/unplayable. RME settings say it's synced, both are at 44.1k.


    With two cables plugged in, all I get is popping and no sync. Any ideas? I've tried all the settings I know of in RME settings and Keeper's output page

  • Is your coaxial cable the digital version? It only works properly with digital coaxial cable.


    I have the same setup except for original RME Babyface and only 1 box. Set RME clock source to "optical in" and 44.1khz

  • Did you solve this?

    No, I returned one of the converters. I just record XLR atm, no re-amping until I solve it.

    Is your coaxial cable the digital version? It only works properly with digital coaxial cable.


    I have the same setup except for original RME Babyface and only 1 box. Set RME clock source to "optical in" and 44.1khz

    Thanks for the info!! I'll try it!


    So to clarify, you're recording in with one box and later using the same box for reamping? For reamping, you'd need an out & in at the same time--so I think I'd use SPDIF out, XLR amp sound in

  • I got this setup working with two Konig Digital Audio Converters. One for recording DI signal from the Kemper doing S/PDIF to TosLink conversion and one for feeding Kemper with DI recorded source doing TosLink to S/PDIF conversion. Both boxes are connected to Kemper Stage with digital coaxial cables and the unit is locked at 48kHz using Babyface's internal clock. It's unfortunate I couldn't find a single bi-directional unit like this one at my place, but if you can find one I think that would be a much better solution.


    I'm using RME Babyface Pro and everything seems to work without any issues.

  • I got this setup working with two Konig Digital Audio Converters. One for recording DI signal from the Kemper doing S/PDIF to TosLink conversion and one for feeding Kemper with DI recorded source doing TosLink to S/PDIF conversion. Both boxes are connected to Kemper Stage with digital coaxial cables and the unit is locked at 48kHz using Babyface's internal clock. It's unfortunate I couldn't find a single bi-directional unit like this one at my place, but if you can find one I think that would be a much better solution.


    I'm using RME Babyface Pro and everything seems to work without any issues.

    Hi,

    Do I understand you correctly : the kemper works fine with the Konig converters?

    Background: I am planning to buy the RME BABYFACE pro fs and I like to use THE SPDIF out of the Kemper. But the Digital Input of the Babyface is different.

    So, please let me know, which cable and adaptor / converter I need to have.

  • Hi,

    Do I understand you correctly : the kemper works fine with the Konig converters?

    Background: I am planning to buy the RME BABYFACE pro fs and I like to use THE SPDIF out of the Kemper. But the Digital Input of the Babyface is different.

    So, please let me know, which cable and adaptor / converter I need to have.

    Mine works now with previously purchased converters from Amazon. The key was to use digital coaxial cable, not the one that came with the converter.

  • Hi,

    Do I understand you correctly : the kemper works fine with the Konig converters?

    Background: I am planning to buy the RME BABYFACE pro fs and I like to use THE SPDIF out of the Kemper. But the Digital Input of the Babyface is different.

    So, please let me know, which cable and adaptor / converter I need to have.

    Sorry for the super late response but I'll answer for posterity. Since Babyface Pro (and FS version afaik) support S/PDIF connection over TosLink optical connection you need to convert TosLink to Coaxial and vice versa in order to connect it with the Kemper in both directions. You'll want this two way connection if you want to do re-amping but also to avoid issues that might happen if you don't fully close the cycle.



    The white, digital coaxial cable with RCA connectors should go from the Kemper's S/PDIF out connector into converter's coaxial input connector. The black, optical cable with standard TosLink connectiors should than go from the connector's optical output to Babyface's optical input connector. The same is true the other way around where you have a different convertor which is converting optical to coaxial connection and go into Kemper's S/PDIF input connector.


    It's important to note that Kemper's S/PDIF supports digital coaxial cable with RCA connectors (not Mini TOSLINK / 3.5mm connectors one might assume). One example might be https://www.amazon.com/C2G-29115-Velocity-Digital-Meters/dp/B0002J2B8I or https://www.sweetwater.com/store/detail/GoldRCA03--mogami-gold-rca-rca-cable-3-foot. The one I use is a custom made one from the local store.


    The other important part if you are going to do re-amping is to configure Babyface's optical output to use S/PDIF (the default is ADAT) in order to send the DI signal to Kemper: