On 13:22 14 May 2011, Martin Brown wrote:

On 14/05/2011 12:54, Patrick wrote:
On 12:44 14 May 2011, Phil Allison wrote:


"Patrick"

I have some vinatge headphones (Sennheiser HD424) and want to
attach a new plug.

Which color wires are the positive ones?

The colors in one of the leads are red& blue and in the other lead
black& yellow. (No wire is used as screening - there's just two
wires in each lead.)


** Stick the damn phones on your fat head and connect pairs of wires
to a AA battery until you hear a click.

Now you have your two pairs of wires.

Wire them to a plug any way around you like and connect the same AA
to the common and both positives at the same time.

If the click seems to comes from right inside your head - game
over.

If you need more explanation - you do not deserve it.

..... Phil

The four wires are already grouped as two pairs, so we already know
which two wires go together.

I want to get the phasing right (even for headphones). I need to
know which color wire in each pair is the positive.

No you don't need to know it. It will be abundantly clear if you have
the phase in one ear wrong by 180 degrees - unless that is you are
deaf.

Are you familiar with decoding these red& blue and black& yellow
headphone wires?

I would hazard a guess red, yellow are positive and blue, black
negative. But why didn't you make a note of where the cables were
connected when you took the original apart?

There are only four wires as two trivially distinct pairs - the worst
that can happen is you need to flip a pair if you choose incorrectly.

Regards,
Martin Brown

Years ago someone wired up these headphones to a 1/4 inch plug and they
they say they don't know what polarity meant. There's no point following
their clueless wiring.

Out of phase headphone transducers create a far more subtle adverse
effect than that noticed in loudspeakers, so it is not something
immediately evident by A-B testing. Nor is testing necessary if someone
here knows what the color coding is.

"Patrick = another PITA Jerk

Out of phase headphone transducers create a far more subtle adverse
effect than that noticed in loudspeakers, so it is not something
immediately evident by A-B testing.


** That is 100% ****ing BULL**** !!!!!!!!!

With any mono signal, the difference is HUGE.

Do exactly what I said you PITA moron.

If the click seems to comes from right inside your head - game over.

If you need more explanation - you do not deserve it.



..... Phil

On 13:49 14 May 2011, Phil Allison wrote:


"Patrick = another PITA Jerk

Out of phase headphone transducers create a far more subtle adverse
effect than that noticed in loudspeakers, so it is not something
immediately evident by A-B testing.


** That is 100% ****ing BULL**** !!!!!!!!!

With any mono signal, the difference is HUGE.

There is no phase cancellation like there is for speaker sounds because the
sound from each headphone transducer is interfereing with the other.

Your lack of knowledge is made all the more lamentable by the unwarranted
self-assurance with which you conduct yourself.

Do exactly what I said you PITA moron.

If the click seems to comes from right inside your head - game over.

If you need more explanation - you do not deserve it.

.... Phil

Your poor knowledge is a liability to this group because your can't
recognize your inadequate understanding even after it has been politely
explained to you.

I hope you don't mind but you are now in my plonk file to spare me reading
your further pitiful lamentations.

"Patrick = another PITA Jerk"

Out of phase headphone transducers create a far more subtle adverse
effect than that noticed in loudspeakers, so it is not something
immediately evident by A-B testing.


** That is 100% ****ing BULL**** !!!!!!!!!

With any mono signal, the difference is HUGE.

There is no phase cancellation ..


** My god you are one ARROGANT ****HEAD !!!

****ING TRY IT !!!

The difference is ****ING HUGE.

You stinking pile of autistic ****.



..... Phil

Patrick wrote:
On 13:49 14 May 2011, Phil Allison wrote:

"Patrick = another PITA Jerk
Out of phase headphone transducers create a far more subtle adverse
effect than that noticed in loudspeakers, so it is not something
immediately evident by A-B testing.

** That is 100% ****ing BULL**** !!!!!!!!!

With any mono signal, the difference is HUGE.

There is no phase cancellation like there is for speaker sounds because the
sound from each headphone transducer is interfereing with the other.

Wrong, I'm afraid. I myself have heard a 2-channel sound clip on the net that
irrefutably demonstrated that interference does occur in the brain, at
lowish frequencies, but not that low. Up to a few hundred Hz.

It was a clip of (f Hz) in one channel/earphone, and (f+delta Hz) into
the other earphone.

With just either (one) earphone inserted, you could hear just a plain tone of
f or (f+delta) as expected.

With both in, you heard the beating at a few Hz, proving that addition/
mixing was taking place in the brain.

It sounded very weird, and I was very surprised. but the effect was utterly
obvious and undeniable.

I can't remember now where I found the sound sample, but IIRC it was a link
on Wikipedia.


Martin

Patrick wrote:

Your lack of knowledge is made all the more lamentable by the unwarranted
self-assurance with which you conduct yourself.

I believe it's time for you to go **** yourself.

Thanks for playing!
Rich

On 14/05/2011 13:46, Patrick wrote:
On 13:22 14 May 2011, Martin Brown wrote:

On 14/05/2011 12:54, Patrick wrote:
On 12:44 14 May 2011, Phil Allison wrote:


"Patrick"

I have some vinatge headphones (Sennheiser HD424) and want to
attach a new plug.

Which color wires are the positive ones?

Are you familiar with decoding these red& blue and black& yellow
headphone wires?

I would hazard a guess red, yellow are positive and blue, black
negative. But why didn't you make a note of where the cables were
connected when you took the original apart?

There are only four wires as two trivially distinct pairs - the worst
that can happen is you need to flip a pair if you choose incorrectly.

Years ago someone wired up these headphones to a 1/4 inch plug and they
they say they don't know what polarity meant. There's no point following
their clueless wiring.

Out of phase headphone transducers create a far more subtle adverse
effect than that noticed in loudspeakers, so it is not something
immediately evident by A-B testing. Nor is testing necessary if someone
here knows what the color coding is.

A pair of headphones with incorrect phasing is about as obvious as being
hit on the head with a brick. Amplifier to mono and try listening to
something. If you have it right the sound source will appear to be very
close to the middle of your head and if not it will be in different
places or spread out depending on the frequency.

If you can't tell the difference you don't deserve a hifi system.

You could always look at the cables at the transducer end.

Regards,
Martin Brown

"Martin Brown"

Some ****** wrote:

Out of phase headphone transducers create a far more subtle adverse
effect than that noticed in loudspeakers, so it is not something
immediately evident by A-B testing. Nor is testing necessary if someone
here knows what the color coding is.

A pair of headphones with incorrect phasing is about as obvious as being
hit on the head with a brick.


** ROTFLMAO !!!

Amplifier to mono and try listening to something. If you have it right the
sound source will appear to be very close to the middle of your head and
if not it will be in different places or spread out depending on the
frequency.

If you can't tell the difference you don't deserve a hifi system.


** LOL.


You could always look at the cables at the transducer end.

** Just might be that the transducers are mis-wired.

As someone who does repairs for a living - I learnt LONG ago to expect
the unexpected.

Murphy RULES !!!!!


...... Phil

In article ,
Phil Allison wrote:
** Just might be that the transducers are mis-wired.

Highly unlikey with AKG. On this design, the leads plug into the
transducers. One reason they were so popular for pro use - they unplug
rather than break if strained.

--
*If PROGRESS is for advancement, what does that make CONGRESS mean?

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

"Dave Plowman (Nutcase )


** Just might be that the transducers are mis-wired.

Highly unlikey with AKG.

** Irrelevant.

Only ONE ear unit is involved.


On this design, the leads plug into the
transducers.


** This * steaming great * RETARDED ****wit did not read what I wrote.

" As someone who does repairs for a living - I learnt LONG ago to expect
the unexpected. Murphy RULES !!!!! "


.... Phil