In twisted-pair cable, is there a convention for which is hot
and which is cold ? Blue hot ? White hot ?

--
André Majorel URL:http://www.teaser.fr/~amajorel/
(Counterfeit: )
"J'baiserai la France jusqu'à ce qu'elle m'aime." -- Un rappeur

Andre Majorel wrote:
In twisted-pair cable, is there a convention for which is hot
and which is cold ? Blue hot ? White hot ?

Not really. I think the dark color should always be hot, but then I
think pin 3 should always be hot too.

All that matters is that it's the same on both ends.
--scott
--
"C'est un Nagra. C'est suisse, et tres, tres precis."

On 6 Aug 2005 12:07:31 -0400, (Scott Dorsey) wrote:

Andre Majorel wrote:
In twisted-pair cable, is there a convention for which is hot
and which is cold ? Blue hot ? White hot ?

Not really. I think the dark color should always be hot, but then I
think pin 3 should always be hot too.

All that matters is that it's the same on both ends.
--scott

Of course on a balanced interconnect, both are equally hot.

d

Pearce Consulting
http://www.pearce.uk.com

On Sat, 6 Aug 2005 15:35:31 +0000 (UTC), Andre Majorel
wrote:

In twisted-pair cable, is there a convention for which is hot
and which is cold ? Blue hot ? White hot ?

In some trades there is:
http://www.homephonewiring.com/clr-code.html

Phone Colors
Red = Blu/Wht, Grn = Wht/Blu
Yel = Org/Wht, Blk = Wht/Org
Blu = Grn/Wht, Wht = Wht/Grn
Line 1:
RING: Blu/Wht = Red (Negative)
TIP: Wht/Blu = Green (Positive)
Line 2:
RING: Org/Wht = Yellow (Negative)
TIP: Wht/Org = Black (Positive)
Line 3:
RING: Grn/Wht = Blue (Negative)
TIP: Wht/Grn = White (Positive)

So Blue and Blu/Wht both end up being ring.

Of course the (positive) TIP voltage is at Ground potential and the
spec for the RING voltage is -48 volts, so "hot" might be debated. And
having red = negative and green = positive counteracts all normal
logic... Unless you are still in denial about the unit of electricity
being a negative quantity... Of course if you then switch to
solid-color cable, blue connects to red...

Probably best to ignore this.

Loren

In article writes:

In twisted-pair cable, is there a convention for which is hot
and which is cold ? Blue hot ? White hot ?

You get to be the design engineer here. Pick which color you want to
go to Pin 2 or the Tip and stick with that at least through that
cable. If you're making up a bunch of cables, it's nice to have a
"house standard" but it's completely arbitrary.


--
I'm really Mike Rivers )
However, until the spam goes away or Hell freezes over,
lots of IP addresses are blocked from this system. If
you e-mail me and it bounces, use your secret decoder ring
and reach me he double-m-eleven-double-zero at yahoo

In article writes:

Of course on a balanced interconnect, both are equally hot.

Oh, no! Let's not go there.

--
I'm really Mike Rivers )
However, until the spam goes away or Hell freezes over,
lots of IP addresses are blocked from this system. If
you e-mail me and it bounces, use your secret decoder ring
and reach me he double-m-eleven-double-zero at yahoo

On 6 Aug 2005 15:13:08 -0400, (Mike Rivers) wrote:


In article writes:

Of course on a balanced interconnect, both are equally hot.

Oh, no! Let's not go there.

Why's that? Another can of worms fabricated by "Music engineers" that
you would rather not pen?

d

Pearce Consulting
http://www.pearce.uk.com

"Don Pearce" wrote:

Why's that? Another can of worms fabricated by "Music engineers" that
you would rather not pen?



I'm curious about something, Mr. Pearce, and I ask with no malice or
offence intended: Why do you read this group? I do not mean to suggest
you should not, I'm just genuinely curious about why you do? You seem
to view most of us and what we do with disdain. Why do you want to read
discussions about things you despise?

--
"It CAN'T be too loud... some of the red lights aren't even on yet!"
- Lorin David Schultz
in the control room
making even bad news sound good

(Remove spamblock to reply)

On Sat, 06 Aug 2005 20:00:18 GMT, "Lorin David Schultz"
wrote:

"Don Pearce" wrote:

Why's that? Another can of worms fabricated by "Music engineers" that
you would rather not pen?



I'm curious about something, Mr. Pearce, and I ask with no malice or
offence intended: Why do you read this group? I do not mean to suggest
you should not, I'm just genuinely curious about why you do? You seem
to view most of us and what we do with disdain. Why do you want to read
discussions about things you despise?

Do you get all that from what I have described as a minor niggle? You
are far to sensitive. As it happens I read this group from
professional interest. I do the occasional recording myself, and I
have not only designed, but built studios for radio and TV. And there
is absolutely nothing about audio and audio engineering that I despise
- apart maybe for those who peddle snake oil to the gullible.

Of course I do like to see engineering terms used properly, but why
wouldn't I? I am an engineer.

d

Pearce Consulting
http://www.pearce.uk.com

"Don Pearce" wrote:

Do you get all that from what I have described as a minor niggle?

Heck no. That was just a recent example of what I perceived as a trend
in the tenor of your messages. I have, over the years, interpreted your
comments regarding both procedures (most notably compression) and
terminology as coming from a disgusted individual. Perhaps I have
misread your intent.

--
"It CAN'T be too loud... some of the red lights aren't even on yet!"
- Lorin David Schultz
in the control room
making even bad news sound good

(Remove spamblock to reply)

On Sat, 06 Aug 2005 20:36:25 GMT, "Lorin David Schultz"
wrote:

"Don Pearce" wrote:

Do you get all that from what I have described as a minor niggle?

Heck no. That was just a recent example of what I perceived as a trend
in the tenor of your messages. I have, over the years, interpreted your
comments regarding both procedures (most notably compression) and
terminology as coming from a disgusted individual. Perhaps I have
misread your intent.

Compression is something (the way it is currently used) that I regard
as a heinous crime that is wrecking a discipline I like greatly. I
don't believe for one moment it has been instigated at an engineering
level, but rather at the marketing level.

I'm pretty sure I am not alone on this group or any other in that
opinion. I just wish sometimes that engineers at the desk would make a
stand for quality rather than loudness.

OK, maybe I tend to post when I think something needs saying, rather
than just to hear the sound of my own voice, but that is me. I don't
let stuff pass lightly.

d

Pearce Consulting
http://www.pearce.uk.com

On 2005-08-06, Scott Dorsey wrote:
Andre Majorel wrote:
In twisted-pair cable, is there a convention for which is hot
and which is cold ? Blue hot ? White hot ?

Not really. I think the dark color should always be hot, but then I
think pin 3 should always be hot too.

At least that would be consistent with electrical cabling
conventions (brown live, blue neutral).

--
André Majorel URL:http://www.teaser.fr/~amajorel/
(Counterfeit: )
"J'baiserai la France jusqu'à ce qu'elle m'aime." -- Un rappeur

In article writes:

Of course on a balanced interconnect, both are equally hot.

Oh, no! Let's not go there.

Why's that? Another can of worms fabricated by "Music engineers" that
you would rather not pen?

Already opened and closed. See my article in the July 1999 issue of
Recording Magazine.

Oh, that's right, you don't read magazines for artists who drive
desks.

Never mind.

Where is this confrontation coming from? I keep looking at the message
headers expecting to see cross-postings from rec.audio.opinion or
someplace like that, but all I see is rec.audio.pro. We normally try
to understand audio applications in the real world here.



--
I'm really Mike Rivers )
However, until the spam goes away or Hell freezes over,
lots of IP addresses are blocked from this system. If
you e-mail me and it bounces, use your secret decoder ring
and reach me he double-m-eleven-double-zero at yahoo

In article writes:

Do you get all that from what I have described as a minor niggle? You
are far to sensitive.

I hardly think that destroying the concept of voltage gain in dB is a
minor niggle.


--
I'm really Mike Rivers )
However, until the spam goes away or Hell freezes over,
lots of IP addresses are blocked from this system. If
you e-mail me and it bounces, use your secret decoder ring
and reach me he double-m-eleven-double-zero at yahoo

"Andre Majorel" wrote ...
On 2005-08-06, Scott Dorsey wrote:
Andre Majorel wrote:
In twisted-pair cable, is there a convention for which is hot
and which is cold ? Blue hot ? White hot ?

Not really. I think the dark color should always be hot, but then I
think pin 3 should always be hot too.

At least that would be consistent with electrical cabling
conventions (brown live, blue neutral).

Or black=live, white=neutral on the left side of the Pond.

Mike Rivers wrote:

In article writes:


Do you get all that from what I have described as a minor niggle? You
are far to sensitive.


I hardly think that destroying the concept of voltage gain in dB is a
minor niggle.


--
I'm really Mike Rivers )
However, until the spam goes away or Hell freezes over,
lots of IP addresses are blocked from this system. If
you e-mail me and it bounces, use your secret decoder ring
and reach me he double-m-eleven-double-zero at yahoo

*Whew*.

That's got some backspin on it.

Here's the deal - we use units as if they were interchangeable.
We can all instantaneously convert from dbV to something
like dBm in our heads - until we can't no more. As in
RF.

Yer both right. For all intents and purposes, either will do
nicely. *BUT* the canonical, as-in-the-specs version is
what's commonly referred to to as dBm.

This does not place a small burden on those who have to
change views dependent on subject domain.

But for all intents and purposes, dBm are well modelled by
dBV for the domain in question. dBm are for people who
deal with uncertain loads, where the transfer functions
snarl and growl, and good men fear the coming
of the night. Audio people ain't them.

Voltage is but half the story of energy, energy being
but a convenience and an abstraction to make people
more able to do things. Volts is Real, but
not Complete. But it's a damn good approximation
of measura*bel* result in the domain in question.

They told me in physics class that electromagnetism was
Unified. But it appears an uneasy peace.

--
Les Cargill

Andre Majorel wrote:

In twisted-pair cable, is there a convention for which is hot
and which is cold ? Blue hot ? White hot ?

I hate it whenever I come across cable like that. Give me red and black
any day.

European usage allocates blue to the neutral conductor for ac power - so
I'd tend to go with blue cold and white hot.

Also since blue is often associated with cold and 'white hot' sounds
good - I reckon that'll do ! ;-)

I know of no convention it has to be said.

Graham

Les Cargill wrote:

Mike Rivers wrote:

In article writes:

Do you get all that from what I have described as a minor niggle? You
are far to sensitive.

I hardly think that destroying the concept of voltage gain in dB is a
minor niggle.

--
I'm really Mike Rivers )
However, until the spam goes away or Hell freezes over,
lots of IP addresses are blocked from this system. If
you e-mail me and it bounces, use your secret decoder ring
and reach me he double-m-eleven-double-zero at yahoo

*Whew*.

That's got some backspin on it.

Here's the deal - we use units as if they were interchangeable.
We can all instantaneously convert from dbV to something
like dBm in our heads - until we can't no more. As in
RF.

Yer both right. For all intents and purposes, either will do
nicely. *BUT* the canonical, as-in-the-specs version is
what's commonly referred to to as dBm.

Try and find a dBm in a modern spec. If you can - it's almost certainly being misused.

It's dBu now - the voltage equivalent. Since about 25 yrs or more ago in fact.

Graham

On Sun, 07 Aug 2005 06:32:55 +0100, Pooh Bear
wrote:

Try and find a dBm in a modern spec. If you can - it's almost certainly being misused.

It's dBu now - the voltage equivalent. Since about 25 yrs or more ago in fact.

Graham

Every RF signal generator and analyser in existence. And there are an
awful lot of them out there.

d

Pearce Consulting
http://www.pearce.uk.com

On 6 Aug 2005 20:31:01 -0400, (Mike Rivers) wrote:


In article writes:

Of course on a balanced interconnect, both are equally hot.

Oh, no! Let's not go there.

Why's that? Another can of worms fabricated by "Music engineers" that
you would rather not pen?

Already opened and closed. See my article in the July 1999 issue of
Recording Magazine.

Oh, that's right, you don't read magazines for artists who drive
desks.

Never mind.

Where is this confrontation coming from? I keep looking at the message
headers expecting to see cross-postings from rec.audio.opinion or
someplace like that, but all I see is rec.audio.pro. We normally try
to understand audio applications in the real world here.

Don't look. It was a boring, rainy day yesterday. It needed a little
spice.

d

Pearce Consulting
http://www.pearce.uk.com

So far you have mentioned the first circuit in a popular multipair sequence
of differently coloured twisted pairs), which happens to be blue and white.
What about instinctive hot and cold feelings for the other umpteen pairs?
Jim

"Pooh Bear" wrote in message
...

Andre Majorel wrote:

In twisted-pair cable, is there a convention for which is hot
and which is cold ? Blue hot ? White hot ?

I hate it whenever I come across cable like that. Give me red and black
any day.

European usage allocates blue to the neutral conductor for ac power - so
I'd tend to go with blue cold and white hot.

Also since blue is often associated with cold and 'white hot' sounds
good - I reckon that'll do ! ;-)

I know of no convention it has to be said.

Graham

Don Pearce wrote:

On Sun, 07 Aug 2005 06:32:55 +0100, Pooh Bear
wrote:

Try and find a dBm in a modern spec. If you can - it's almost certainly being misused.

It's dBu now - the voltage equivalent. Since about 25 yrs or more ago in fact.

Graham

Every RF signal generator and analyser in existence. And there are an
awful lot of them out there.

This is an *audio* group - NOT RF ! The poster clearly wasn't talking about anything other
than audio.

Graham

In article writes:

But for all intents and purposes, dBm are well modelled by
dBV for the domain in question. dBm are for people who
deal with uncertain loads, where the transfer functions
snarl and growl, and good men fear the coming
of the night. Audio people ain't them.

Thank goodness! We design our systems (most of the time) so that we
know how they'll behave (most of the time). Sometimes we have to tell
people DON'T DO THAT! and then maybe they won't connect a microphone
up to a (passive) loudspeaker and wonder why they can't hear anything.



--
I'm really Mike Rivers )
However, until the spam goes away or Hell freezes over,
lots of IP addresses are blocked from this system. If
you e-mail me and it bounces, use your secret decoder ring
and reach me he double-m-eleven-double-zero at yahoo

In article writes:

Try and find a dBm in a modern spec. If you can - it's almost certainly being
misused.

You find it all the time in RF work, and apparently that's the only
"real" engineering because it uses the correct terms.

Since over in Jolly Olde, the part of a car where you put the
microphones and recorders when you're carrying them to a gig is called
the "boot" that doesn't mean you have to put your feet in there
whenever it rains.



--
I'm really Mike Rivers )
However, until the spam goes away or Hell freezes over,
lots of IP addresses are blocked from this system. If
you e-mail me and it bounces, use your secret decoder ring
and reach me he double-m-eleven-double-zero at yahoo

Jim Gregory wrote:

So far you have mentioned the first circuit in a popular multipair sequence
of differently coloured twisted pairs), which happens to be blue and white.
What about instinctive hot and cold feelings for the other umpteen pairs?
Jim

What makes you say blue and white are the first circuit in a multipair
arrangement ?

If I was dealing with a multiple conductor cable, there's often a guide that
gives conductor number vs colour/colour. I'd follow that for a multipair.

Blue and white simply seem to be a popular ( Asian ) alternative to red and
black in classic screened mic cable.

Graham

On 7 Aug 2005 07:54:54 -0400, (Mike Rivers) wrote:


In article writes:

Try and find a dBm in a modern spec. If you can - it's almost certainly being
misused.

You find it all the time in RF work, and apparently that's the only
"real" engineering because it uses the correct terms.

Un-called-for. ALL engineering discipline apart from audio is what you
mean.

Since over in Jolly Olde, the part of a car where you put the
microphones and recorders when you're carrying them to a gig is called
the "boot" that doesn't mean you have to put your feet in there
whenever it rains.

As opposed to the trunk, where you are likely to lose the lot as the
owner goes off in search of sticky buns, or whatever elephants eat.
And of course it is called the boot because in early cars it was a
leather box on the back made by a bootmaker. I suppose if it had been
made somehow else, we might have called it a trunk too, but we tend to
keep that term for something you can carry away with you.

d

Pearce Consulting
http://www.pearce.uk.com

Pooh Bear wrote in
:

What makes you say blue and white are the first circuit in a multipair
arrangement ?

It's the standard for US telelphone multipair.

White w/blue stripe and Blue w/White stripe or just a white wire twisted
with a blue wire constitute the first pair.

White/Orange is the second pair.

YES (I'd said popular). Etc, etc, etc up to 80 or even sometimes 160 pairs
in overall sheaths - for 0.5 solid telecomms wires in the UK, as well as by
broadcasters for installations.
New wire colours (and colours for 10-group streamers) are introduced, the
higher the sequence rises.
Lay mnemonics help users remember the colour sequences.
Jim

"Carey Carlan" wrote in message
30...
Pooh Bear wrote in
:

What makes you say blue and white are the first circuit in a multipair
arrangement ?

It's the standard for US telelphone multipair.

White w/blue stripe and Blue w/White stripe or just a white wire twisted
with a blue wire constitute the first pair.

White/Orange is the second pair.

Carey Carlan wrote:

Pooh Bear wrote in
:

What makes you say blue and white are the first circuit in a multipair
arrangement ?

It's the standard for US telelphone multipair.

Ahhh.... Thanks for that. It probably explains why blue and white crop up in
mic cable from time to time.

White w/blue stripe and Blue w/White stripe or just a white wire twisted
with a blue wire constitute the first pair.

White/Orange is the second pair.

Ok - here's another type from a UK supplier. Red and Black are cores 1 and
2.

http://www.farnell.com/datasheets/37240.pdf

Graham

Jim Gregory wrote:

YES (I'd said popular). Etc, etc, etc up to 80 or even sometimes 160 pairs
in overall sheaths - for 0.5 solid telecomms wires in the UK, as well as by
broadcasters for installations.
New wire colours (and colours for 10-group streamers) are introduced, the
higher the sequence rises.
Lay mnemonics help users remember the colour sequences.
Jim

I have however found other charts for conductor numbering. The quoted example
is simply one instance of one particular convention. It's certainly not a
universal convention no matter how popular.

Whatever you do, please don't use solid conductor cable for anything other than
very, *very* fixed installations !

Graham

On Sat, 06 Aug 2005 11:38:45 -0700, Loren Amelang
wrote:

On Sat, 6 Aug 2005 15:35:31 +0000 (UTC), Andre Majorel
wrote:

In twisted-pair cable, is there a convention for which is hot
and which is cold ? Blue hot ? White hot ?

In some trades there is:
http://www.homephonewiring.com/clr-code.html

Phone Colors
Red = Blu/Wht, Grn = Wht/Blu
Yel = Org/Wht, Blk = Wht/Org
Blu = Grn/Wht, Wht = Wht/Grn
Line 1:
RING: Blu/Wht = Red (Negative)
TIP: Wht/Blu = Green (Positive)
Line 2:
RING: Org/Wht = Yellow (Negative)
TIP: Wht/Org = Black (Positive)
Line 3:
RING: Grn/Wht = Blue (Negative)
TIP: Wht/Grn = White (Positive)


This colour code originated with the Bell Telephone Company and is
commonly used in North American telephones, radio stations, and
anywhere that uses 25-pair unshielded telco style cable.

There is, as always, some ambiguity about which way to wire an XLR
connector, as there were two different standards (British vs. US,
Ampex vs. Scully, etc.) until recently. At least we all agreed that
pin 1 is ground (or is it shield ... or maybe earth).

And telco practice for a TRS connector (red = ring = in-phase) is
different from audio practice (tip = in-phase). Telco practice would
cause a phase reversal if you connected an unbalanced TS connector to
a TRS jack. In telco world, there are NO unbalanced connections.

Mike T.

Graham, I don't think those wires are twisted pairs, but multicore singles.

The various twisted-pair colour conventions may differ from spec to spec,
but then each was created/adopted as a "house" standard initially by a large
user. Some popular colour codes have very wide acceptance. Just like a
patois (language) spoken by and adhered to in a community (or enlarged
community).
And the so-called hot or cold half comes into play only if low voltage DC is
present or if low voltage AC/AF phasing is important. As long as one end is
continuous and sequentially traceable with the other end, that's what
matters.

"Pooh Bear" wrote in message
...


Carey Carlan wrote:

Pooh Bear wrote in
:

What makes you say blue and white are the first circuit in a multipair
arrangement ?

It's the standard for US telelphone multipair.

Ahhh.... Thanks for that. It probably explains why blue and white crop up
in
mic cable from time to time.

White w/blue stripe and Blue w/White stripe or just a white wire twisted
with a blue wire constitute the first pair.

White/Orange is the second pair.

Ok - here's another type from a UK supplier. Red and Black are cores 1 and
2.

http://www.farnell.com/datasheets/37240.pdf

Graham

Jim Gregory wrote:

Graham, I don't think those wires are twisted pairs, but multicore singles.

Actually - I suspect you're right but then neither is telco 25 conductor twisted
pairs either AFAIK. Certainly there's going to be one conductor going spare !

The various twisted-pair colour conventions may differ from spec to spec,
but then each was created/adopted as a "house" standard initially by a large
user. Some popular colour codes have very wide acceptance. Just like a
patois (language) spoken by and adhered to in a community (or enlarged
community).
And the so-called hot or cold half comes into play only if low voltage DC is
present or if low voltage AC/AF phasing is important. As long as one end is
continuous and sequentially traceable with the other end, that's what
matters.

Yup.

Graham

"Mike T." wrote:

snip

There is, as always, some ambiguity about which way to wire an XLR
connector, as there were two different standards (British vs. US,
Ampex vs. Scully, etc.) until recently.

Until about ~ 20 - 25 yrs ago to be accurate.

No issue any more. Pin 2 = hot Pin 3 = cold.

Just make sure you realise Pin 3 is in the middle though. It's caught out
some ppl including one cheap Asian copier of the Switchcraft style of
'XLR'. I know of one instance where that caused loads of fun since the
guy doing the wiring did it by the numbers instead of familiarity with
the connector.

Graham

"Pooh Bear" wrote ...
Actually - I suspect you're right but then neither is telco
25 conductor twisted pairs either AFAIK. Certainly there's
going to be one conductor going spare !

All the 6-, 25- or 50-pair telephone cables I've ever seen
ARE twisted. Not nearly as many turns/length as CAT5, etc.
but twisted, nonetheless. And I've never seen a telco cable
with a spare wire or pair.
http://www.answers.com/topic/25-pair-color-code

Pooh Bear wrote in
:


Jim Gregory wrote:

Graham, I don't think those wires are twisted pairs, but
multicore singles.

Actually - I suspect you're right but then neither is telco 25
conductor twisted pairs either AFAIK. Certainly there's going
to be one conductor going spare !

Telco cable is 25 pairs of conductors, not 25 conductors grouped
into pairs....and in larger cables, each group of 25 pairs is
twisted as a group, and bound with a bi-color spiral ribbon, the
colour coding of which duplicates the colour coding of the pairs,
so the first ribbon is blue-white. It may be a telco proprietary
standard, but it's a d@mn-well thought out one.

--
Bob Quintal

PA is y I've altered my email address.

Pooh Bear wrote in
:


"Mike T." wrote:

snip

There is, as always, some ambiguity about which way to wire
an XLR connector, as there were two different standards
(British vs. US, Ampex vs. Scully, etc.) until recently.

Until about ~ 20 - 25 yrs ago to be accurate.

No issue any more. Pin 2 = hot Pin 3 = cold.

Just make sure you realise Pin 3 is in the middle though. It's
caught out some ppl including one cheap Asian copier of the
Switchcraft style of 'XLR'. I know of one instance where that
caused loads of fun since the guy doing the wiring did it by
the numbers instead of familiarity with the connector.

Graham

Huh?? Pin 3 is on the second row...That's how it got to be in
the middle!;-)



--
Bob Quintal

PA is y I've altered my email address.

Bob Quintal wrote:

Pooh Bear wrote in
:


"Mike T." wrote:

snip

There is, as always, some ambiguity about which way to wire
an XLR connector, as there were two different standards
(British vs. US, Ampex vs. Scully, etc.) until recently.

Until about ~ 20 - 25 yrs ago to be accurate.

No issue any more. Pin 2 = hot Pin 3 = cold.

Just make sure you realise Pin 3 is in the middle though. It's
caught out some ppl including one cheap Asian copier of the
Switchcraft style of 'XLR'. I know of one instance where that
caused loads of fun since the guy doing the wiring did it by
the numbers instead of familiarity with the connector.

Graham

Huh?? Pin 3 is on the second row...That's how it got to be in
the middle!;-)

Pin 3 of a 3 pin XLR style connector is 'between' Pin1 and Pin 2. I call
that the 'middle'. Sorry if that wasn't clear.

Graham

Pooh Bear wrote:

Also since blue is often associated with cold and 'white hot' sounds
good - I reckon that'll do ! ;-)

"White hot" is how I always remember it. I guess I am glad Canare didn't
red instead of blue.

Rob R.

Rob Reedijk wrote:

Pooh Bear wrote:

Also since blue is often associated with cold and 'white hot' sounds
good - I reckon that'll do ! ;-)

"White hot" is how I always remember it. I guess I am glad Canare didn't
red instead of blue.

Oh yeah, I've seen the red and white conductor stuff too. I wonder where all
these different conventions arose ?

Graham