Marantz CR510 with inverter

metal

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Mar 1, 2015
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Hi, please help. I have purchased Marantz CR510 for my RV. Plugged it into modified sine wave 300w inverter and got some buzzing sound inside the unit. No buzz over speakers, just inside CR510. Any way to get rid of this buzzing sound? Any troubles this buzz could cause to CR510? Anyway to "fix" CR510 for 12V circuit?
 

Covenanter

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Jul 20, 2012
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I would guess, but it is a guess, that the power supply waveform that your inverter is providing is not very sinusoidal and that the noise you are hearing is coming from the transformer inside the Marantz. Transformers often vibrate, it's a response to the electromagnetic forces that are generated inside them, but it's generally very small and you can't hear it if they are well made. (Loosely wound transformers vibrate a lot!)

I don't have a solution but an email to Marantz asking if they can recommend an inverter might help.

Chris
 

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