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In the Forum: Analog Playback
In the Thread: Where are our good phonostages?
Post Subject: The turnover adjustment – how much would it be sane?Posted by Romy the Cat on: 6/4/2010
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 Thorsten wrote:
Well, a range of mono EQ curves (and only Mono) had turnovers other than 500Hz (AES with 400Hz comes to mind, often used by Rudy van Gelder and then there was Decca with a different turnover each year in the 1950's!). 
AMR's PH-77 also adjusts the middle turnover for such curves. It is quite audible. Lest I am totally mistaken, the FM Acoustic Phonostage with adjustable EQ also adjusts this.

Hold on, are you saying that manufacturers of phonostages who claim that they run RIAA curve with precision of 0.1db are full of shit? Ok, take the Fifths and do not answer this question.

I did not know that middle turnover was a subject of valiance. The curves themselves were pretty much random in that time but I was under impression that they all cross zero at fixed point. If it is not so then it would be VERY VERY difficult to set the proper equalization by ears only.

The Cat

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