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Vinyl Asylum Welcome Licorice Pizza (LP) lovers! Setup guides and Vinyl FAQ. |
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Vinyl Asylum Welcome Licorice Pizza (LP) lovers! Setup guides and Vinyl FAQ. |
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In Reply to: RE: Fremer's ZENITH ANGLE CORRECTION or have we all gone crazy. posted by John Elison on February 15, 2021 at 14:03:17:
If you use a flat gain amplifier then a pink noise test tone would be applicable. However, most consumers would likely be using a conventional phono stage with RIAA EQ in which case the output signal being measured will have the pink 10dB/decade drop requiring the user to either interpret the response as is or apply a 10dB/dec gain to analyse the deviation from flat.
In the case of the Ortofon test disc, the test signal is pre-emphasised for RIAA therefore the output of a phono stage would be a flat signal within the tolerancing of the phono stage EQ.
In practical terms, it isn't validating the phono cartridge in isolation, it is only validating the combination of the phono stage and cartridge response, but most decent phono stages have gain topologies and fine component tolerances to give an RIAA response typically better than ±0.5dB which is better than most cartridges so the white noise output can reasonably be taken as being that of the cartridge.
Regards Anthony
"Beauty is Truth, Truth Beauty.." Keats
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Follow Ups
- RE: Fremer's ZENITH ANGLE CORRECTION or have we all gone crazy. - flood2 19:50:44 02/15/21 (2)
- RE: Fremer's ZENITH ANGLE CORRECTION or have we all gone crazy. - John Elison 08:58:40 02/16/21 (1)
- RE: Fremer's ZENITH ANGLE CORRECTION or have we all gone crazy. - flood2 00:37:58 02/18/21 (0)
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