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RE: Why vinyl sounds better than digitally sampled music

Hi John,

Thank you for posting the square wave responses from your V15VxMR - I remember them from when you first published them.

I have the same test disc and am fully aware that the square wave is intended to be played without EQ. However, it is not really important to consider the use of EQ or not here because I think the OP's intention was to somehow demonstrate that his vinyl rig was able to reproduce an infinite slew rate. What his graphic shows is the theoretical impulse function and then digital reproductions. What is missing is the equivalent output response from his cartridge. The physics of a resilient medium displacing a (finite) mass within a damped mechanical system tells us that it is impossible to have an infinite acceleration even before we consider the electrical sub-system of the coils and phono stage.
My point was that the square wave rising edge will not be at an infinite slew rate and will be subject to the several other parameters relating to cantilever stiffness and effective tip mass. These will define the tip resonance frequency and other bending modes which will be revealed in the output response of the test tone.
IIRC the tip resonance of the TypeVxMR is around 35kHz. When loaded at the recommended capacitance, the rising edge is rolled off in the manner I described (obviously it will be more like a triangle after EQ, but I assumed that most casual users wouldn't have the capability of recording and measuring the raw cartridge output as we do).
The effect of the limited bandwidth is still seen as the load resistance is increased - the ringing we now see should be at the tip resonance frequency and we still see exactly the same basic roll off on the rising edge despite the increased ringing amplitude.

The bottom line is that I believe the OP likely misunderstands the difference between transient response and the loudness range of the music which is purely the result of mastering choices.

I analysed the Kevin Gray (Tone Poet) cut of Blue Train and compared it to the CD edition of the same release and found the loudness range and frequency response to be identical which confirmed that the same master had been used and that a flat transfer had likely been used.
Regards Anthony

"Beauty is Truth, Truth Beauty.." Keats

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