Riaa curve

Hi,
I'm sure there is more then one way to measure RIAA error to start with.
If so, we are arguing about the emperor beard.

For instance to get to a fat response you need to have an inverse RIAA network, yes?

Now that in itself needs to be MORE accurate than the one you try to establish in the phono-pre.

Due to component tolerances there will be no two stages the same exactly, even if you go through 100reds of components.

All of this just plain and simply just begs the question of the manufacturability of such high tolerances --- if ALL surrounding it is WAY-OF in comparison.

Seems to me, like insisting your tyre pressure to be 0.01% correct... and it will make actually no difference if it is correct to 1%.
I can claim 0.01% but how to measure/confirm that it's like this in the first place, and then the temperature might just have changed, what now?

Sorry about the typo's, (need an editor sooner or later :-)

emperor = emperor's; fat = flat; just begs = begs; WAY-OF = WAY-OFF

Dear Axel: IMHO your tyre example tell me that you don't understand anything what is on my post or you don't really care about and it is nothing wrong with that because you like a person are a unique person as everyone else.

Btw, in our unit we make the RIAA calibration with the unit " hot "/warm to avoide changes due to temperature. Of ourse that in any audio item design we have to work between the parts tolerances, in some way this part tolerances are the limits to.

Regards and enjoy the music,
Raul.

Dear Raul,
>>> ... in some way this part tolerances are the limits to. <<<
Exactly, what was on my mind also, tires have tolerances so have measuring gauges.
Pushing the envelope is fine by me - but maybe not always quite 'reasonable'?

I listen to CD on my 390S and then listen to a +/- 1dB 'quoted'/spec. RIAA module, and all I hear is NO colouration other then what the different carts produce.
The least colouration CD vs. vinyl is provided by my Windfeld, known to be very neutral.

Then I listen to a S1000ZE/X that has colouration (more low end than any same CD), but it is nicer than CD.
I actually cannot easily assimilate how +/-0.0075dB error is going to make this any different.
Maybe if I put my head in vice?
The variations in moving my head will actually be bigger than that 1% RIAA error... hm.

Raul....Do you know the spec on the RIAA equalization when the LP is cut, and the frequency response of the cutter, its electronics, and the recorder that made the master, and the microphones?