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Before this post it was just a personality trait...
Now, hypocrisy is a bona fide art form.
Actually, no** Got anything useful to say - Steve ?
Unfortunately, that is the popular but wrong answer.
The real answer is simple and not a formula - someone will post it
soon.
Mark - you have posted a load of shite. The titles of articles are
NOT an answer to my question.
Why do you go out of your way to make yourself angry like this? DoFine - then why don't you fucking *** POST *** it here??????????????
I've copped this from Rod Speed and you, Phil. Not a single otherAs with any other Hotmail using fuckwit.
If only he was Angelo, but it would seem that he's completely serious!Angelo Sartore wrote;
Your a funny guy.
** Then go get fucked.** Got anything useful to say - Steve ?
Actually, no.
Most sane people would read the article and post a link or an edited
version of it for interested people to peruse.
Instead, you bait people with questions, and then slam them for
speculating. If it was
you who came up with the answers, then perhaps I could understand that
pride allows for a little gloating. However, this is not the case and
despite what you might think you are not encouraging healthy debate.
As with any other Hotmail using fuckwit.
I've copped this from Rod Speed and you, Phil. Not a single other
person I've EVER communicated with via the internet has EVER had a
problem with it.
Besides, as yet no one has informed me as to what is
so damn horrible about using my hotmail address.
"Steve" wrote
** Got anything useful to say - Steve ?
Actually, no.
Most sane people would read the article and post a link or an edited
version of it for interested people to peruse. Instead, you bait
people with questions, and then slam them for speculating.
%%% WTF has "speculation" got to do with a technical question ?
Brian Goldsmith.
I have published a plot I did of a 10 Inch driver in a cabinet onpopular but wrong hey?
I'd love to see your source, or is this your own theory?
I checked my answer against a few publishments, I'd love to see you
contradict them.
Maybe that's why he's so pissed off with everybody & so fucked up ... He's
got something permanently jammed up his arse!!!
Suck on that ... CUNT HOOKS.
Hi to all,
everyone knows the nominal impedance of a cone speaker is slightly
greater
than the DC resistance of the wire used in the voice coil. An nominal 8
ohm
speaker will have about 6 or 7 ohms of DC resistance for example.
Where does the extra 1 or 2 ohms come from ?
Seems from recent postings on other NGs that most folk have this one
wrong.
.......... Phil
OK Phil, we give up.
Oh that's real specific."Alan" <who@knows.com
OK Phil, we give up.
** Several Bogymen have to be removed from the game first:
Voice coil DC resistance is due to the copper wire alone and so
converts all
current flowing to heat (calculated from I squared R ,where R is the
DC
value) - NOT sound and NOT movement.
The region around 250Hz to 400 Hz is one where a cone speaker is a
resistive
load - i.e. there is little or no phase angle between applied voltage
and
the resulting current - but the value of that load is some 20%
higher
than the DC resistance.
From the above, the inductive reactance of the voice coil & iron pole
piece
is not involved.
** The Real Explanation:
The extra measured resistance indicates that about 20% of the real
power in
the 250 to 400 Hz frequency range delivered to the speaker is
dissipated in
doing something other than producing heat in the voice coil.
"mostly", "most", "nearly all" are not words one would use to attributeThe extra power is mostly converted into heat by the rapid flexing the
suspension material while some is converted to sound. Since most
speakers
are not even 1% efficient at converting electricity into sound energy
nearly
all the extra power is dissipated in flexing the suspension - i.e. the
spider, surround and cone.
With high powered drivers these parts must become quite hot in
operation.
At the cone resonance frequency the load is again resistive - but a
much
More fudging and non-specific answers.higher value of around 25 to 35 ohms. The voice coil resistance is
still
only 6 or 7 ohms so at this one frequency only about 20 % of the power
supplied from the amp ends up as heat in the copper wire and about 80
% as
heat in the suspension parts - minus a bit for radiated sound,
windage
loss etc.
I don't see any corrected formula accounting for the 2 ohms. Where isThe actual heat in watts lost in the suspension is not much higher
than in
the mid frequency case since the higher total impedance reduces the
power
drawn from the amplifier by a factor of 4 or 5 times anyway.
** I certainly is - you Yank fuckhead.** The Real Explanation:
The extra measured resistance indicates that about 20% of the real
power in the 250 to 400 Hz frequency range delivered to the speaker is
dissipated in doing something other than producing heat in the voice coil.
Oh that's real specific.
The extra power is mostly converted into heat by the rapid flexing the
suspension material while some is converted to sound. Since most
speakers are not even 1% efficient at converting electricity into sound
energy
nearly all the extra power is dissipated in flexing the suspension - i.e.
the
spider, surround and cone.
"mostly", "most", "nearly all" are not words one would use to attribute
a characteristic to a single cause.
At the cone resonance frequency the load is again resistive - but a
much
Funny, you indicated to me that the phase error was zero across the
board.
Now you're contradicting yourself by bringing reactance into the picture.
higher value of around 25 to 35 ohms. The voice coil resistance is
still> only 6 or 7 ohms so at this one frequency only about 20 % of the
power
supplied from the amp ends up as heat in the copper wire and about 80
% as heat in the suspension parts - minus a bit for radiated sound,
windage loss etc.
More fudging and non-specific answers.
The actual heat in watts lost in the suspension is not much higher
than in the mid frequency case since the higher total impedance reduces
the
power drawn from the amplifier by a factor of 4 or 5 times anyway.
I don't see any corrected formula accounting for the 2 ohms.
Where is your proof?
accounted for the extra two ohms.
"Phil Allison"
You are one stupid mother fucker, no wonder all of usenet hates your guts.
"Angelo Sartore" <fangio@netspace.net.au> wrote in message
news:bo55cq$jb6$1@otis.netspace.net.au...
Maybe that's why he's so pissed off with everybody & so fucked up ...
He's
got something permanently jammed up his arse!!!
Suck on that ... CUNT HOOKS.
** Temper, temper little wog camera toter........
You are losing your focus.
............... Phil
First off, I wish to offer my apologies to the rest of the group for my"Anthony Fremont"
"Phil Allison"
You are one stupid mother fucker, no wonder all of usenet hates your
guts.
** Not nearly as much as they hate millions of smug American
egomaniacs
like you.
How you have surmised that from a simple email address is beyond me...Read it to yourself, moron - it screams of some 15 year old,
pimply
faced, jerk off.
So if I make up a "real" name and have an email address that doesn'tGet a real addy - and then use your full name.
Your cred will go up by an order of magnitude.
"Phil Allison" <philallison@optusnet.com.au> wrote in message
news:3fa649b4$0$2393$afc38c87@news.optusnet.com.au...
"Anthony Fremont"
"Phil Allison"
You are one stupid mother fucker, no wonder all of usenet hates your
guts.
** Not nearly as much as they hate millions of smug American
egomaniacs
like you.
First off, I wish to offer my apologies to the rest of the group for my
childish outburst. I don't normally conduct myself like that without
allot more prompting, especially when making my first posts to a group.
As for you Phil, your sig line should carry a warning serving to inform
others that you are incapable of conducting a civil discussion.
Granted, your posts do have the added value of offering keen insight to
the workings of the sociopathic mind, but they would probably be better
directed towards a psychological discussion group than an electronics
one.
I am also extremely impressed by your clever ability to efficiently
argue your case. You don't waste time presenting evidence or even
offering a counter-argument, instead you hurriedly dismiss the opposing
viewpoint by vomiting vulgar invectives with no holds barred. Then,
using reasoning powers that breathe new meaning into the term "non
sequitur", you present a rushed, disjointed, and generally
incomprehensible "explanation". Yes Phil, you've got my vote. You are
most certainly the king of fallacious reasoning.
Must be one of those rocket scientist unemployable fuckwits.Voice coil DC resistance is due to the copper wire alone
Completely and utterely irrelevant to what was being discussed.and so converts all current flowing to heat
(calculated from I squared R ,where R is the DC value)
Wrong again. You'll find the voice coil does move even with DC.- NOT sound and NOT movement.
Wrong. Even tho the resistive component completely dominates.The region around 250Hz to 400 Hz is one
where a cone speaker is a resistive load
More completely irrelevant waffle. i.e. there is little or no phase angle between
applied voltage and the resulting current
Which is what- but the value of that load is some
20% higher than the DC resistance.
From the above, the inductive reactance of
the voice coil & iron pole piece is not involved.
Fraid not.** The Real Explanation:
Utterly mangled. And have fun explaining the massive variation inThe extra measured resistance indicates that about 20% of the real
power in the 250 to 400 Hz frequency range delivered to the speaker is
dissipated in doing something other than producing heat in the voice coil.
Utterly mangled. And have fun explaining the massive variation inThe extra power is mostly converted into heat by the rapid flexing
the suspension material while some is converted to sound. Since
most speakers are not even 1% efficient at converting electricity
into sound energy nearly all the extra power is dissipated in
flexing the suspension i.e. the spider, surround and cone.
Pity they dont.With high powered drivers these parts must become quite hot in operation.
Wrong.At the cone resonance frequency the load is again resistive
Pity you cant explain that either, or why there is- but a much higher value of around 25 to 35 ohms.
Have fun explaining the massive variation in mpedanceThe voice coil resistance is still only 6 or 7 ohms so at this one
frequency only about 20 % of the power supplied from the amp
ends up as heat in the copper wire and about 80 % as heat in the
suspension parts - minus a bit for radiated sound, windage loss etc.
Utterly mangled all over again.The actual heat in watts lost in the suspension is not much higher than
in the mid frequency case since the higher total impedance reduces the
power drawn from the amplifier by a factor of 4 or 5 times anyway.