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<blockquote data-quote="Emile Gauthier" data-source="post: 207465" data-attributes="member: 11851">Hi guys, this is my first post here, thanks in advance for your help and let me know if it&#039;s not posted in the right section. I&#039;ve been using a Soundcraft EFX12 board that I really love, to record podcasts for a couple years ago. here&#039;s my setup:- 2 condenser mics connected to the channels with XLR cables- Master Record out goes to my soundcard with RCA cablesWhen I start recording, I usually hear nothing. But after a couple minutes, there&#039;s a noise appearing whose frequency is constantly getting higher in tones. When I turn the Phantom power off, the noise is still there but its frequency drops suddenly (a few tones down). I have tested all other inputs, and it doesn&#039;t change anything. I live in a pretty old building, so that can be an electrical issue. But it just started appearing in the past few weeks. I didn&#039;t change my electrical setup.Does it look familiar to you? Do you think it&#039;s an electrical issue?&nbsp; Thank you!</blockquote>

[QUOTE="Emile Gauthier, post: 207465, member: 11851"] Hi guys, this is my first post here, thanks in advance for your help and let me know if it's not posted in the right section. I've been using a Soundcraft EFX12 board that I really love, to record podcasts for a couple years ago. here's my setup: - 2 condenser mics connected to the channels with XLR cables - Master Record out goes to my soundcard with RCA cables When I start recording, I usually hear nothing. But after a couple minutes, there's a noise appearing whose frequency is constantly getting higher in tones. When I turn the Phantom power off, the noise is still there but its frequency drops suddenly (a few tones down). I have tested all other inputs, and it doesn't change anything. I live in a pretty old building, so that can be an electrical issue. But it just started appearing in the past few weeks. I didn't change my electrical setup. Does it look familiar to you? Do you think it's an electrical issue? Thank you! [/QUOTE]

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