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Marantz SR2285B Receiver : Phono Stage Model Response

Posted 19th March 2013 at 07:02 AM by rjm
Updated 20th March 2013 at 02:54 AM by rjm

Mid-range 1970's stereo receiver.

I was curious to find out a) what the phono circuit was, and b) how tight the RIAA response might have been.

The answer is "four transistors" and "pretty damn good", respectively.

We are impressed. These Japanese engineers knew a thing or two. I would like to see some of these old circuits resurrected as discrete phono stages with modern components to see just what they are capable of.
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Attached Files
File Type: zip Marantz LTSPICE.zip (1.5 KB, 88 views)
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rjm
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