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Old 19th February 2004, 08:23 PM   #1
pete.a is offline pete.a  United Kingdom
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Default Kit Phono

Iv'e built a phono stage from a very well known kit supplier. With my volt meter set on dc mv im getting around +.018v on one input channel and -.018 on the other. Would this be normal? as i dont want to riskdamage to the cartridge
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Old 19th February 2004, 08:46 PM   #2
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It's a MM pickup I suppose? No, I wouldn't worry. Is it a NE5534/32?

But I would not be pleased if this was my own design. 0.36 uA, rather much I think, for my personal taste.
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Old 19th February 2004, 08:54 PM   #3
sreten is offline sreten  United Kingdom
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normality depends on the design of the phono stage.

With a MM and 1k resistance = 18uA, not going to damage anything.

With phono designs the arguement is the degradation of the
coupling capacitors versus the current by leaving them out.

Engineers put the capacitors in, others leave them out.

sreten.
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Old 19th February 2004, 10:10 PM   #4
pete.a is offline pete.a  United Kingdom
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Default plus and minus

Hi guys,

What concerns me is that potential difference of plus and minus on left and right inputs?
yes it is MM at present, however it can be MC with just a flick of a switch.
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