Here you have it :http://www.fastaudio.com/workspace/uploads/downloads/stp_04_12_sd_atlas.pdf
FIM distortion 0.07% ! 100u tracking !
Yes, it has a 20kHz peak. I think a 1nF parallel to the input can take that away.
FIM distortion 0.07% ! 100u tracking !
Yes, it has a 20kHz peak. I think a 1nF parallel to the input can take that away.
Yeah, I'm a visual and text person as well, the spoken word doesn't transcend very well unless I visualize it, I'd say I visualize audio, i.e. sound, to a certain extent as well. I thought it was interesting that some people have learned how to echolocate - like bats - that they perform this partially in the visual cortex.
I recall a number wizard or "human calculator" was using a non-standard way to process numbers as well, we usually use "area 44" to process numbers, he's not, in fact he doesn't even need to think, it's hypothesized that he's using an area of the mind related to eye movement.
I highly recommend watching it — Stan Lee's Superhumans with The Human Calculator Scott Flansburg on The History Channel - YouTube
We humens can hear 3 dimensional too :Psychoacoustics - Wikipedia, the free encyclopedia
This improves when we loose the sense of sight.
Blind people are very good at it.
Horitontal resolution can be as good as 1°, especially for noise like a cracking branch.
This improves when we loose the sense of sight.
Blind people are very good at it.
Horitontal resolution can be as good as 1°, especially for noise like a cracking branch.
OK, you mean poly for resonant tank , yes i do the same, when you said Bypass, it meant something else to me ...
My table is far more extended in the top-end than the CD, way more 3 D too, there is something really wrong with CD top end, its like good class-D ...
What reference? What test LP and track? Of course there's the problem of the classic LP's cut with pre-distortion for spherical carts.
I would love to sit down with someone and play with these carts at 5kHz+ and some pink noise/IM tracks.
EDIT - One last question, folks have been making line contact stylii for 30+ years why now is there a real measurable difference?
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I can ask Stereoplay how they EXACTLY measured it.
As far as i can tell they use the JVC test record.
Wayne, now i am confused.
First i talked about a bypass cap in speakers then a talked about a cap, parallel to the input of a phonostage.
I have published distortion measurements on the MPP thread of my Titan cartridge.
I think Scott you have seen it.
I got around 0.4% at 1kHz at 5cm/sec, mainly second.
I can measure at other frequencies.
Maybe we should open a thread about distortion in vinyl.
In my system it is pari.
I get a very satifying sound with CD on my Forsell Air Refference.
I also use Amarra on my computer that can play high resolution files.
My experience is that it matters more how the music is recorded and mastered.
I have tracks that sound better on CD then on high resolution mediums.
The best digital sound i heard was from a high resolution martertape,Boz Skaggs, life in the studio on TAD speakers with Pass electronics BiAmped ( good for you Wayne ) through a huge Pacific Microsonics DA converter i have newer seen again.
My Vinyl Plaback is a Spriral Groove SG1 with centroid arm and Lyra Atlas.
The same picture, it matters much what is on the record. From downright poor to awesome. I do not care much abou the clicks and pops between takes but i hate hum and noise from the phonostage.
As far as i can tell they use the JVC test record.
Wayne, now i am confused.
First i talked about a bypass cap in speakers then a talked about a cap, parallel to the input of a phonostage.
I have published distortion measurements on the MPP thread of my Titan cartridge.
I think Scott you have seen it.
I got around 0.4% at 1kHz at 5cm/sec, mainly second.
I can measure at other frequencies.
Maybe we should open a thread about distortion in vinyl.
In my system it is pari.
I get a very satifying sound with CD on my Forsell Air Refference.
I also use Amarra on my computer that can play high resolution files.
My experience is that it matters more how the music is recorded and mastered.
I have tracks that sound better on CD then on high resolution mediums.
The best digital sound i heard was from a high resolution martertape,Boz Skaggs, life in the studio on TAD speakers with Pass electronics BiAmped ( good for you Wayne ) through a huge Pacific Microsonics DA converter i have newer seen again.
My Vinyl Plaback is a Spriral Groove SG1 with centroid arm and Lyra Atlas.
The same picture, it matters much what is on the record. From downright poor to awesome. I do not care much abou the clicks and pops between takes but i hate hum and noise from the phonostage.
Here is a comprehensive review that better needle geometries bring less tracing distortion
( plus other interting details ) :High Fidelity Phonograph Cartridge - Technical Seminar
( plus other interting details ) :High Fidelity Phonograph Cartridge - Technical Seminar
What's the DAC you're currently using to blame HF problems on the format a.wayne?
The differences are not that dramatic maybe sometimes they get lost in the VTA/azimuth setup.
Yes, but when you scroll down an even better profile managed 2%.
That is 3 times better then a round needle with 6%.
Here are my old measurements.
Lyra Titan i with 1kHz 5cm/sec.
This is with my best phono stage i can make.
A diffential stage with a transformer at the input.
Secondary wraped in a diffential shunt feedback loop to erode the secondary impedance.
It is called the Primal Scream.
It manages -150dB from 1V refference the lower trace ( red ) shows.
When you see what noise the groove makes it does not seem to make sense to go to super low noise. An AD797 is maybe agequate. That whould make my work over the last 30years and especially the last 5 years here ( more then 10.000 posts ) obsolete.
Nevertheless i hear improvements when the noise of the phono stage is lower then 1nV/QHz.
Anyway, we have discussed that too
That is 3 times better then a round needle with 6%.
Here are my old measurements.
Lyra Titan i with 1kHz 5cm/sec.
This is with my best phono stage i can make.
A diffential stage with a transformer at the input.
Secondary wraped in a diffential shunt feedback loop to erode the secondary impedance.
It is called the Primal Scream.
It manages -150dB from 1V refference the lower trace ( red ) shows.
When you see what noise the groove makes it does not seem to make sense to go to super low noise. An AD797 is maybe agequate. That whould make my work over the last 30years and especially the last 5 years here ( more then 10.000 posts ) obsolete.
Nevertheless i hear improvements when the noise of the phono stage is lower then 1nV/QHz.
Anyway, we have discussed that too
Well, there was a level shift of 10dB so S/N of that stage is -160dB ref 1V.
That seems like a miracle but the transformer has only 0.75 Ohm primary and does not have 1/F noise. When you want the lowest noise physical possible a transformer is in need.
Even the undisputable Burkhard Vogel said that in a privat discussion to me.
Read it in the next issue of Linear Audio.
What is left is the distortion in the transformer.
First i use a Me-Metall core ( not popular i know but less distortion in the bass then an amorphous cobalt core ) and then i wrap it in a feedback loop.
I do everything wrong so to say.
As for the sound ask Martina and Stig.
That seems like a miracle but the transformer has only 0.75 Ohm primary and does not have 1/F noise. When you want the lowest noise physical possible a transformer is in need.
Even the undisputable Burkhard Vogel said that in a privat discussion to me.
Read it in the next issue of Linear Audio.
What is left is the distortion in the transformer.
First i use a Me-Metall core ( not popular i know but less distortion in the bass then an amorphous cobalt core ) and then i wrap it in a feedback loop.
I do everything wrong so to say.
As for the sound ask Martina and Stig.
Red is whith a short, blue is with the cartridge and wire ( you see that even a 5 Ohm Lyra Titan has more noise then my phono ), light blue is the cable, shorted at the Titan pins. You see that the cable picks up hum.
If have a new cable now that improved the sound. It is a Lyra Phono Pipe with 100% shielding.
It looks like hose for showering so it has metal rings around it.
Even better whould be a massive copper tube like the Forsell cables but that is VERY stiff so you can only bend it to shape.
That also distroys turntable isolation.
If have a new cable now that improved the sound. It is a Lyra Phono Pipe with 100% shielding.
It looks like hose for showering so it has metal rings around it.
Even better whould be a massive copper tube like the Forsell cables but that is VERY stiff so you can only bend it to shape.
That also distroys turntable isolation.
You think i"m the only one with this opinion, you should get yourself a a good analog setup and THEN ASK YOURSELF The same ......
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