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nad phono stage
nad phono stage
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Old 2nd June 2008, 10:13 PM   #1
reddish75 is offline reddish75  United Kingdom
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Default nad phono stage

hi i have an old nad 3020 that im currently restoring, it was in very bad shape, its all going well appart from the phono stage when i apply a sinewave to it, it turns it into a square wave, having not really dealt with phonostages before i was wondering if this was correct because the trace on my friends oscilloscope is the same for left and right at the pre-amp output, its just that its a square wave!

any help would be appreciated

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Old 2nd June 2008, 10:16 PM   #2
leadbelly is offline leadbelly  Canada
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nad phono stage
No it's not right, of course. What are the ranges for your input and output? Is your output range so low that it is clipping off the peaks?
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Old 2nd June 2008, 10:17 PM   #3
adason is offline adason  United States
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may be you are clipping it heavily
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Old 3rd June 2008, 09:58 AM   #4
djk is offline djk
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For sure.

A phono input only handles a few mV (0.001V).

You also need an inverse RIAA filter to check response.
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