There was talk on another group about credulity and hugely expensive
cables. I was just wondering if *anybody* was prepared to say that they
believe the claims for a cable like this, for example:

http://www.russandrews.com/product.asp?pf_id=2565

"£797.00: KIMBER Select KS-2120 Digital Balanced

"KS-2120 not only uses the highest purity silver, it incorporates
KIMBER's latest discoveries in the nature of digital signals. The
result? Even more detail and even more music. You have to hear this
cable between your CD transport and DAC to appreciate the massive
improvements it can bring."

--
Dave Farrance

Dave Farrance wrote:
There was talk on another group about credulity and hugely expensive
cables. I was just wondering if *anybody* was prepared to say that they
believe the claims for a cable like this, for example:

http://www.russandrews.com/product.asp?pf_id=2565

"£797.00: KIMBER Select KS-2120 Digital Balanced

"KS-2120 not only uses the highest purity silver, it incorporates
KIMBER's latest discoveries in the nature of digital signals. The
result? Even more detail and even more music. You have to hear this
cable between your CD transport and DAC to appreciate the massive
improvements it can bring."


I don't think that anybody that knows how digital audio is transmitted
would believe that *any* digital cable will make a difference. AES-EBU
and SP-DIF signals are incredibly rugged, and provided the cable is of
75 ohms impedance, what it's made of and how constructed will have *no*
effect on the signal transmitted.

Balanced AES-EBU signals are even more immune to jitter caused by
50-60Hz hum and are the preferred choice for long cable runs.

I just don't know how Russ Andrews has the gall to sell this stuff.......

S.

Serge Auckland wrote:

Dave Farrance wrote:

There was talk on another group about credulity and hugely expensive
cables. I was just wondering if *anybody* was prepared to say that they
believe the claims for a cable like this, for example:

http://www.russandrews.com/product.asp?pf_id=2565

"£797.00: KIMBER Select KS-2120 Digital Balanced
"KS-2120 not only uses the highest purity silver, it incorporates
KIMBER's latest discoveries in the nature of digital signals. The
result? Even more detail and even more music. You have to hear this
cable between your CD transport and DAC to appreciate the massive
improvements it can bring."


I don't think that anybody that knows how digital audio is transmitted
would believe that *any* digital cable will make a difference.

Haven't heard from Glenn Richards recently.

--
Eiron.

"Serge Auckland"
wrote in message ...
:
: I don't think that anybody that knows how digital audio is
transmitted
: would believe that *any* digital cable will make a
difference. AES-EBU
: and SP-DIF signals are incredibly rugged, and provided the
cable is of
: 75 ohms impedance, what it's made of and how constructed
will have *no*
: effect on the signal transmitted.
:
: Balanced AES-EBU signals are even more immune to jitter
caused by
: 50-60Hz hum and are the preferred choice for long cable
runs.
:
:
: S.
:

Isn't AES/EBU digital cable 110Ohm?

Regards TT

In article , TT TTencerNOmorespam@westnet.
com.au writes

"Serge Auckland"
wrote in message ...
:
: I don't think that anybody that knows how digital audio is
transmitted
: would believe that *any* digital cable will make a
difference. AES-EBU
: and SP-DIF signals are incredibly rugged, and provided the
cable is of
: 75 ohms impedance, what it's made of and how constructed
will have *no*
: effect on the signal transmitted.
:
: Balanced AES-EBU signals are even more immune to jitter
caused by
: 50-60Hz hum and are the preferred choice for long cable
runs.
:
:
: S.
:

Isn't AES/EBU digital cable 110Ohm?

Regards TT



Yes. As robust as it is it don't like longish lumps of twin mic cable of
the wrong sort...
--
Tony Sayer

TT wrote:
"Serge Auckland"
wrote in message ...
:
: I don't think that anybody that knows how digital audio is
transmitted
: would believe that *any* digital cable will make a
difference. AES-EBU
: and SP-DIF signals are incredibly rugged, and provided the
cable is of
: 75 ohms impedance, what it's made of and how constructed
will have *no*
: effect on the signal transmitted.
:
: Balanced AES-EBU signals are even more immune to jitter
caused by
: 50-60Hz hum and are the preferred choice for long cable
runs.
:
:
: S.
:

Isn't AES/EBU digital cable 110Ohm?

Regards TT


AES-EBU or AES-3 as the standard is known can be either 110 ohms
balanced or 75 ohms unbalanced. The signal format is identical, and is
also interchangeable with SP-DIF. The differences are in the settings of
one or more data bits which identify the signal, and in the nominal
signal level. SP-DIF is 0.5v and AES-EBU is 1V,if I remember correctly.
Connectors are normally XLR for balanced AES-EBU, BNC for unbalanced
AES-EBU and phono for SP-DIF

One benefit of using 75 ohm unbalanced AES-EBU is that in a mixed
audio-video facility, all cables are 75 ohms on BNCs, so the same cable
can be used for audio and video.

In an audio-only facility it is better to use all balanced 110 ohm cable
for analogue and digital so again, any balanced cable can be used for
either. The danger comes in older facilities which still have a lot of
balanced non-110 ohm cable, and that gets used for digital audio. As
rugged as AES-EBU is, it doesn't take kindly to long lengths of the
wrong impedance cable.

S.

Serge Auckland wrote:

I don't think that anybody that knows how digital audio is transmitted
would believe that *any* digital cable will make a difference. AES-EBU
and SP-DIF signals are incredibly rugged, and provided the cable is of
75 ohms impedance, what it's made of and how constructed will have *no*
effect on the signal transmitted.

Can some kind soul please tell me what the impedance of a "normal"
analogue phono-phono cable is?

Anton Gijsen wrote:
Serge Auckland wrote:

I don't think that anybody that knows how digital audio is transmitted
would believe that *any* digital cable will make a difference. AES-EBU
and SP-DIF signals are incredibly rugged, and provided the cable is of
75 ohms impedance, what it's made of and how constructed will have
*no* effect on the signal transmitted.

Can some kind soul please tell me what the impedance of a "normal"
analogue phono-phono cable is?

It really all depends on the construction of the cable. If it's coaxial
with a single stranded or solid central core, dielectric to an outer
screen, it will most likely be in the region of 40-100 ohms. If it's a
twisted pair with an outer screen then perhaps 80-130 ohms.
The exact value will depend on the dimensions, dielectric properties of
the insulations, method of construction etc. so it's not really possible
to define a "normal" cable, but in my experience, albeit of many years
ago, these were the typical figures I recall.

S.

Serge Auckland wrote:

Anton Gijsen wrote:

Serge Auckland wrote:

I don't think that anybody that knows how digital audio is
transmitted would believe that *any* digital cable will make a
difference. AES-EBU and SP-DIF signals are incredibly rugged, and
provided the cable is of 75 ohms impedance, what it's made of and how
constructed will have *no* effect on the signal transmitted.


Can some kind soul please tell me what the impedance of a "normal"
analogue phono-phono cable is?


It really all depends on the construction of the cable. If it's coaxial
with a single stranded or solid central core, dielectric to an outer
screen, it will most likely be in the region of 40-100 ohms. If it's a
twisted pair with an outer screen then perhaps 80-130 ohms.
The exact value will depend on the dimensions, dielectric properties of
the insulations, method of construction etc. so it's not really possible
to define a "normal" cable, but in my experience, albeit of many years
ago, these were the typical figures I recall.

The characteristic impedance doesn't apply at audio frequencies,
so you can just consider the CLR values.

--
Eiron.

Eiron wrote:
Serge Auckland wrote:

Anton Gijsen wrote:

Serge Auckland wrote:

I don't think that anybody that knows how digital audio is
transmitted would believe that *any* digital cable will make a
difference. AES-EBU and SP-DIF signals are incredibly rugged, and
provided the cable is of 75 ohms impedance, what it's made of and
how constructed will have *no* effect on the signal transmitted.


Can some kind soul please tell me what the impedance of a "normal"
analogue phono-phono cable is?


It really all depends on the construction of the cable. If it's
coaxial with a single stranded or solid central core, dielectric to an
outer screen, it will most likely be in the region of 40-100 ohms. If
it's a twisted pair with an outer screen then perhaps 80-130 ohms.
The exact value will depend on the dimensions, dielectric properties
of the insulations, method of construction etc. so it's not really
possible to define a "normal" cable, but in my experience, albeit of
many years ago, these were the typical figures I recall.

The characteristic impedance doesn't apply at audio frequencies,
so you can just consider the CLR values.

A minor correction in the interest of precision: Characteristic
impedance *does* apply at all frequencies, it's just that it's
irrelevant for analogue audio frequency signals on the sort of lengths
used domestically. If you were to be setting up analogue music-lines as
the Post Office had up to a few years ago when distances could be many
hundreds of kilometres, it was certainly relevant.

S.