"Poc" in speaker when I turn on the KPA via S/PDIF

Manolo76 · July 28, 2016 at 6:07 PM

Hi,

when I turn on the Kemper which is connected to my Fireface UC via S/PDIF, I always have a annoying "poc" in speakers. I have to turn off my speakers before turning on the Kemper. I would like to know it some other users experimented this ?

nightlight · July 28, 2016 at 6:38 PM

Quote from Manolo76

Hi,

when I turn on the Kemper which is connected to my Fireface UC via S/PDIF, I always have a annoying "poc" in speakers. I have to turn of my speakers before turning on the Kemper. I would like to know it some other users experimented this ?

This is normal behaviour with any device. Turn on the speakers after turning all other devices on. And when shutting off stuff, turn off the speakers first.

That poc sound can be harmful at louder volumes. Even at quieter volumes, I think it really screws with speakers.

Manolo76 · July 29, 2016 at 10:17 AM

I asked the question cause with Master Output, the "poc" is barely noticeable while with S/PDIF, it's hard for speakers.

I don't use my KPA all time so all my system is often on before I turn the KPA on but if it is something that can't be avoid, I'll turn off my speakers first ;).

315ea75b3a1edca04b66d0d49de1e7e757bfdcd5 · July 29, 2016 at 11:10 AM

I also have pocs on my monitor out but not when I turn on, but during boot sequence. I have to unplug it when I turn on to avoid it. (And same for shutdown pocs aswell)

Manolo76 · July 29, 2016 at 11:59 AM

Yes sorry, it's also during the boot sequence.

skoczy · July 31, 2016 at 12:16 PM

I have mounted a switch on the power cord of Yamaha DXR10. After Kemper has booted up i switch on my DXR10 using my foot (the power on the back is always ON/1). Before I switch off the Kemper, I switch off DXR10 simply by stepping on the switch in the cord. I have white LED enabled on the front of the DXR10 to know if it is swith on or off.

[Blocked Image: https://s32.postimg.org/gbqy2rs0l/dxr10.jpg]

viabcroce · August 30, 2016 at 7:26 PM

Quote from nightlight

This is normal behaviour with any device.

Mhhh... not really. Only with those that don't mute their output while powering on\off.