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Phil Allison July 13th 08 02:03 PM

Optical audio connections
 

"tony sayer"

Anyone specify balanced operation and what level?...



** Go away - dickhead.




.... Phil



tony sayer July 13th 08 03:15 PM

Optical audio connections
 
In article , Phil Allison
scribeth thus

"tony sayer"

Anyone specify balanced operation and what level?...



** Go away - dickhead.




... Phil


You never said it had to be un balanced wally;!...
--
Tony Sayer



Adrian C July 13th 08 03:45 PM

Optical audio connections
 
Phil Allison wrote:

** Of course - pro audio is my field.


It may be, but google sadly shows the world otherwise ...

What a pity - once upon a time you had some credibility ...

Now we are just waiting for that little thing in your head to go pop!

--
Adrian C

Dave Plowman (News) July 13th 08 04:41 PM

Optical audio connections
 
In article ,
Phil Allison wrote:
Ever heard of balanced audio?,



** Of course - pro audio is my field.


It always uses shielded, twisted pair cable.


Then you know nothing about pro audio. You don't need a screen for line
level signals under most conditions.

--
*I never drink anything stronger than gin before breakfast *

Dave Plowman London SW
To e-mail, change noise into sound.

Dave Plowman (News) July 13th 08 04:45 PM

Optical audio connections
 
In article ,
David Looser wrote:
It always uses shielded, twisted pair cable.

Shielding is unnecessary for line-level balanced audio. Ever heard of
"Music Circuits"? In the pre-digital days these carried baseband audio
from studios to transmitters, or from OBs to studios, often over
hundreds of miles. They were routed over what was, basically, telephone
cable. The only difference was that more care was taken to get the
balance accurate, but they were unshielded.


Absolutely. In studio complexes it was common to have low and high level
tie lines. The only difference was the low level ones were screened. Of
course our colonial 'friend' probably thinks balanced circuits are only
for mics, where you need the screen for the phantom power.

Unshielded, cat 5 is garbage.

I have a good deal of experience using Cat 5 for balanced line-level
audio, and I assure you it works a treat.


I'd got 10pair ordinary telephone cable feeding audio round here and
there's no interference or crosstalk problems at all. Of course it was
done long before Cat5 existed. ;-)

--
*It sounds like English, but I can't understand a word you're saying.

Dave Plowman London SW
To e-mail, change noise into sound.

Phil Allison July 13th 08 11:44 PM

Optical audio connections
 

"Adrian ****head "
Phil Allison wrote:

** Of course - pro audio is my field.


It may be, but google sadly shows the world otherwise ...



** It shows quite the reverse in fact.

It just all goes right over your pointed little head.




.... Phil







Phil Allison July 13th 08 11:47 PM

Optical audio connections
 

"Dave Plowman (Nutcase )"
Phil Allison

Ever heard of balanced audio?,



** Of course - pro audio is my field.


It always uses shielded, twisted pair cable.


Then you know nothing about pro audio.



** A total non-sequitur.


You don't need a screen for line
level signals under most conditions.



** ********

**** off - IMBECILE.


...... Phil






Arny Krueger July 14th 08 01:50 AM

Optical audio connections
 
"Petert" wrote in message

Hi,

I'm about to move house and the new property requires a
complete rewire, so I plan to take the opportunity to
install audio and video cabling.


I added some data wiring to my house when we did some major remodeling a few
years back.

I used this kind of cable:

Belden 7878A

It includes 2-RG6, 2-CAT5, and 2 fiber

I consider the fiber to be a future expansion type thing, as its termination
costs are still pretty steep for short runs.



Arny Krueger July 14th 08 01:52 AM

Optical audio connections
 
"David Looser" wrote in
message
"Phil Allison" wrote in message
...


** Of course - pro audio is my field.

It always uses shielded, twisted pair cable.

Shielding is unnecessary for line-level balanced audio.
Ever heard of "Music Circuits"? In the pre-digital days
these carried baseband audio from studios to
transmitters, or from OBs to studios, often over hundreds
of miles. They were routed over what was, basically,
telephone cable. The only difference was that more care
was taken to get the balance accurate, but they were
unshielded.


Agreed. In fact shielding doesn't help much with low frequency interference.
Balanced I/O is the real thing.



Phil Allison July 14th 08 02:04 AM

Optical audio connections
 

"Arny Krueger"
"David Looser"
"Phil Allison"

** Of course - pro audio is my field.

It always uses shielded, twisted pair cable.

Shielding is unnecessary for line-level balanced audio.
Ever heard of "Music Circuits"? In the pre-digital days
these carried baseband audio from studios to
transmitters, or from OBs to studios, often over hundreds
of miles. They were routed over what was, basically,
telephone cable. The only difference was that more care
was taken to get the balance accurate, but they were
unshielded.


Agreed.

In fact shielding doesn't help much with low frequency interference.



** It sure does with any unbalanced audio line - good shielding is
crucial.

It is also crucial to balanced lines, in relation to capacitively injected
noise and strong RF transmissions.


Balanced I/O is the real thing.



** Nonsense.

Fact is, balancing has NO effect on magnetic field interference to a line -
it is only the TWISTING of the signal carrying pair has any benefit in this
regard.

OTOH - a co-axial line **inherently rejects** all such interference.

How many times do folk have to be told this.




...... Phil






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