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Nad 658 streaming dac
Nad 658 streaming dac
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Old 12th March 2020, 09:31 PM   #1
rock12 is offline rock12  United States
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Join Date: Nov 2010
Location: midland mi
Default Nad 658 streaming dac

Just got the nad 658 it plays fair with a cheap lepai chip amp, an old g12 tube amp but the main function was to hook up to a pass f6 which every time I try smoke rises from my F6 luckily the F6 still works after several tries. Along with the smoke is a buzzing sound. The smoke seems to come from the cl60 which is only there for slowing start up
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Old 12th March 2020, 09:43 PM   #2
ubergeeknz is offline ubergeeknz  New Zealand
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Join Date: Aug 2018
That's not a good sign, it probably means it's drawing excessive current
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Old 13th March 2020, 11:50 PM   #3
Mark Tillotson is online now Mark Tillotson
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Join Date: May 2018
Location: Cambridge UK
The F6 can't hack the DAC sample clock perhaps? Might be sent into oscillation by this?

I also note the JT123 FLPCH has an ominous peak in response at around 160kHz, suggesting it could resonate with
the MOSFET gate capacitance somewhere close to the DAC clock frequency.

Last edited by Mark Tillotson; 14th March 2020 at 12:07 AM.
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