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Thread: Tron Convergence, with Firebottle modifications.

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  1. #40
    Join Date: Oct 2012

    Location: NE England

    Posts: 4,173
    I'm Jez.

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    Quote Originally Posted by topoxforddoc View Post
    Wow, the RIAA EQ on the TRON looks a great match to the RIAA standard on the curves. I'm not a designer, so please excuse me if every audio manufacturer gets them this close. Perhaps others on this forum could share their knowledge or even their data, so that we can all see.
    The Tron's not bad but most of my phono stages are considerably more accurate still than that.. +/- 0.05dB in most cases though I normally quote it as +/- 0.1dB

    I'm afraid I'm not about to go through the measurements again to make them into pretty graphs though!

    It needs to be born in mind though that a reverse RIAA eq network must be used to generate an inverse curve against which to measure the RIAA accuracy of a phono stage. this network must itself be very accurate indeed of course. I guess it could be generated digitally nowadays but I'm a traditionalist

    I rather doubt that the tiny inaccuracies of the Tron's eq would be sufficient to have any but a very minor effect on it's ability to reproduce a squarewave. As an aside here, if you pass a squarewave through a reverse RIAA generator (awkward it itself as a certain amount of HF bandwidth restriction must be used otherwise it will try to produce infinite treble boost!) and then feed this through a phono stage under test you should then see a squarewave out... the degree to which it's not square reflects the RIAA accuracy and it's a great quick test that it's in the right ballpark.
    Last edited by Arkless Electronics; 14-05-2017 at 19:34.
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