B
Boris Mohar
- Jan 1, 1970
- 0
Boris said:
Eeyore said:Wow ! They claim their cable has a better frequency response ! Shame that the link is corrupted.
Wow ! They claim their cable has a better frequency response ! Shame that the link is corrupted.
Graham
Don't know much about signals, do ya, retard boy?Here is their frequency response claim !
http://www.pearcable.com/sub_products_comice_frequencyresponse.htm
They are claiming that an unspecified "competitor's cable" is more than 6 dB down at 20kHz ! Bizarrely they
reckon their own cable is over a dB down at 20kHz too !
Quite why their cable is also some 8dB down at 30 ? Hz is also a very strange claim.
Graham
ChairmanOfTheBored said:Works fine here, you fucking retard.
ChairmanOfTheBored said:Don't know much about signals, do ya, retard boy?
They are claiming that an unspecified "competitor's cable" is more than
6 dB down at 20kHz ! Bizarrely they reckon their own cable is over a dB
down at 20kHz too !
Looking at the article quoted, I noticed that they were comparing a
pair against a quad line, using loudspeakers as loads, and comparing the
voltages at the speaker terminals.
I got to thinking about this. Audio isn't my field, but transmission lines
are. Looking at the article quoted, I noticed that they were comparing a
pair against a quad line, using loudspeakers as loads, and comparing the
voltages at the speaker terminals.
A quick and dirty Spice model of a single transmission line versus two in
parallel, both having 23ns delay (14feet at 1ns per foot corrected for 0.6
propagation factor) into loads consisting of resistance and inductance in
series shows a pronounced difference, with the quad rolling off at a
higher frequency (pair down 3dB at 20kHz, quad down 3dB at 37KHz , using
loads of 1 ohm in series with 1 microhenry). I don't know enough about
loudspeakers to even *guess* at a realistic load model, but it shows maybe
how the published "results" were obtained.
Maybe somebody with a reasonable model for a loudspeaker could expand on
this...
Wow ! They claim their cable has a better frequency response ! Shame that the link is corrupted.
Graham
Wow ! They claim their cable has a better frequency response ! Shame that the link is corrupted.
Graham
Ok let's suppose that their cables are 6dB better at 20kHz. How many
of us can hear that high? I can hear to about 13kHz at a push maybe a
bit higher.
Ha, I don't measure signal to noise ratios anymore for audio, it'sI know someone who's measured his hearing as cutting off around 21kHz. I
personally know mine rolls off around 18kHz.
It does drop with age.
Tim
Ok let's suppose that their cables are 6dB better at 20kHz. How many
of us can hear that high? I can hear to about 13kHz at a push maybe a
bit higher.
Hardy
I know someone who's measured his hearing as cutting off around 21kHz. I
personally know mine rolls off around 18kHz.
It does drop with age.
Ok let's suppose that their cables are 6dB better at 20kHz.
How many of us can hear that high? I can hear to about 13kHz
at a push maybe a bit higher.
do you have asthma?Very individual.
I could hear up to 24 kHz when I was 35 years old and now
when I'm 53 years I can hear 19 kHz without any problem.
===================================================I could hear up to 24 kHz when I was 35 years old and now
when I'm 53 years I can hear 19 kHz without any problem.