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 Kyma Forum
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 Problem with my A/D converter in My Capybara
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| Author | Topic: Problem with my A/D converter in My Capybara |
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Alain Masse Member |
posted 29 March 2002 13:06
 
Hi everyone, first I would like to thanks all the participants in this forum, I bought my Kyma in november 2001 and for a newby like reading your posts was an awakening experience. I have a little problem, perhaps one you once encounter, so if someone could help me it would be very very appreciate. When I listen to Kyma through the D/A output I have a very noisy digital distortion. When I bounce the sounds to disk or listen using the D/A on my AES\ebu card on the Yamaha 02R or when I export the sounds through my Pro-Tools system using the 828 24 interface there is not such distortion. I tried cutting some db in the preferences thinking that the signal was perhaps too hot but it didn't help. I tried disconnecting all my AES/EBU and SPDIF cables and putting in the trash the preferences, it also didn't help. I didn't try slaving the wordclock... I have 8 cards in my Capybara and the last one in my status window is always working even when there is no sounds loaded... Thank you and have a beautiful Easter Week-end Alain IP: Logged |
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SSC Administrator |
posted 29 March 2002 14:31
My first guess would have been to set an output pad in Edit>Preferences>Performance, but you say you have already tried that. What kind of amplifier or mixer are you feeding into? How many dB did you cut in the Preferences? Are you using the Capybara's internal clock or are you feeding it a digital input? Regarding the last DSP being busy all the time, yes that's normal, because the last DSP is the one that communicates with the outside world, so it is usually busy looking for incoming MIDI events and disk packets. IP: Logged |
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SSC Administrator |
posted 29 March 2002 14:38
Just as a reminder to everyone: Please take care not to connect the outputs of your Capybara-320 to the mixer inputs that also have phantom power. The DC voltage can damage the outputs of your Capybara. IP: Logged |
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Alain Masse Member |
posted 30 March 2002 14:28
Thank you for your quick answer ! I use -15db and the internal clock source. And there is always a hum (a F# I'm not good with Hertz) even when no sound are compiled. I didn't try to record using the A\D of the Capybara. I don't think I used the 48volt on but perhaps it could explain why it worked fine before Christmas. I have this problem since January but I didn't have the time to test. Thank you IP: Logged |
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Alain Masse Member |
posted 30 March 2002 14:30
I forgot, I use for mixer a Yamaha 02R. IP: Logged |
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SSC Administrator |
posted 30 March 2002 15:34
Do you have florescent lights in your studio? For some reason I associate them with F# hum. But as for why you would be picking up the hum: do you use balanced lines? Do you have your computer, Capybara and Mixer all plugged into the same wall outlet via a power strip? (if not, then there could be a strong ground loop) IP: Logged |
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Alain Masse Member |
posted 31 March 2002 21:58
WOW you're good. I closed the neon light (which was shining at more than 6 feet away from the Capybara and yes the Kyma was on the same Power strip as the computer and the mixer so I rearrange my power connections and Talam!!! It work fine. Can I kiss someone. Have a nice day I know I will hunt micro-sounds all night long. Thank you again Alain IP: Logged |
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