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Definitive ProSub 80 hums - Audio Players & Recorders

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  • AaronH Nov 29, 2012

    Sorry. I posted this too quickly. When plugged in, the Pro80 emits a electronic, almost modem-like sound, as it comes to life. Then it begins to to emit a increasingly loud hum that build and levels of after 20 seconds or so. Volume controls have no effect. This happens whether the audio cable is plugged in, or not. Just needs to be powered on.



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