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Old 25th August 2006, 19:49   #1
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Default Different Speaker Brands = Different sound for same/similar music ?

Guys,

this is a very laymanish question. As the title of the thread suggests - its only about speakers.

Suppose I listen to lot of Bollywood songs , will the sound be different on say Pioneer speakers and JBL speakers with the same HU ?

Does it happen that a particular brand of speakers make certain kinds of music sound better ? Or certain kinds of music sound a lot better on particular brand ? For eg - Bollywood might sound more richer on "Pioneer" rather than "Blaupunkt" and Rock might sound more pleasurable to listen on "JBL" rather than "Sony" ? If yes why does it happen ? and if no then why doesnt it happen ?

Any feedback on this ?
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Old 25th August 2006, 21:10   #2
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Yes, normally_crazy!

Different materials, material-thicknesses and style of installation
will affect audio-frequency responses differently.

The same rear-mounted speaker sounds slightly different from the drivers seat of
an Opel Corsa Sail, as compared to
an Opel Corsa sedan.

Building loudspeaker enclosures is a specialist sound-engineering discipline by itself! Books are written on the subject.
For example, mounting a Pioneer woofer on a heavy thick vinyl-covered fibreboard will damp the loudness and at the same time permit low frequencies to vibrate the air inside the car better. A loudspeaker mounted in an enclosure closed from the back will sound different from the same loudspeaker mounted in an enclosure open front and rear.
------------------------------------------------------------------------------------
Speakers of different brands and models differ from each other in some key parameters.
Some of these parameters at low to medium sound volume are:
  1. Projected area of the driver diaphragm.
  2. Mass of the diaphragm, including acoustic load.
  3. Compliance of the driver's suspension (the reciprocal of its stiffness).
  4. Mechanical resistance of a driver's suspension (lossiness)
  5. Voice coil inductance
  6. DC resistance of the voice coil
  7. Product of magnet strength and the length of wire in the magnetic field
Some other parameters at high sound volume are:
  1. Maximum linear peak (or sometimes peak-to-peak) excursion of the cone
  2. Maximum physical excursion of the driver permissible before damage
  3. Thermal capacity of the driver
  4. Peak displacement volume
These parameters are known to sound engineers as the Thiele/Small parameters.
They were first specified by A.N.Thiele of the Australian Broadcasting Commission, and Richard Small from the University of Sydney, Australia.
------------------------------------------------------------------------------------

Differences in these parameters account for one brand/model of loudspeaker having a different frequency response characteristic when compared to another.

Ergo, the sound be different on Pioneer speakers and JBL speakers
with the same Head Unit!

Why, at the low end of the frequency spectrum, even different speaker grilles will make slight differences in the sound.

However this will apply to all kinds of music, not only Bollywood music.

Just as different people like different settings on the graphic equalizer, so also, different people like different models of loudspeakers. At the end of the day, you are the judge. Just go with what you like!

Ram

Last edited by Ram : 25th August 2006 at 21:17.
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Old 25th August 2006, 21:54   #3
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much of the work has been done by ram

the enclousre volume also play a important role also.
let us take a sub of pioneer and jbl if both of the drivers used in a same volume box they will sound diff because of the thiele parameters.....
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Old 25th August 2006, 21:57   #4
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WOW! I'm retiring!
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Old 26th August 2006, 07:07   #5
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Quote:
Originally Posted by navin
WOW! I'm retiring!
But NavinJi, Think once more!
We all (most of us) came to know about these things only because of you!
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Old 26th August 2006, 10:10   #6
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Zak, as much as I'd like to take credit I dont think I had much to contribut towards RAM's knowledge. He seems to be a transducer designer cut from the same cloth as B&T.

RAM's choice of words was excellent. He covered the most salient points in a simple manner and even chose the right examples. The Opel Corsa is a fantastic car to ICE. It's panels require little damping.
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Old 28th August 2006, 23:48   #7
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Quote:
Originally Posted by ram

------------------------------------------------------------------------------------
Speakers of different brands and models differ from each other in some key parameters.
Some of these parameters at low to medium sound volume are:
  1. Projected area of the driver diaphragm.
  2. Mass of the diaphragm, including acoustic load.
  3. Compliance of the driver's suspension (the reciprocal of its stiffness).
  4. Mechanical resistance of a driver's suspension (lossiness)
  5. Voice coil inductance
  6. DC resistance of the voice coil
  7. Product of magnet strength and the length of wire in the magnetic field
Some other parameters at high sound volume are:
  1. Maximum linear peak (or sometimes peak-to-peak) excursion of the cone
  2. Maximum physical excursion of the driver permissible before damage
  3. Thermal capacity of the driver
  4. Peak displacement volume
These parameters are known to sound engineers as the Thiele/Small parameters.
They were first specified by A.N.Thiele of the Australian Broadcasting Commission, and Richard Small from the University of Sydney, Australia.
------------------------------------------------------------------------------------

Ram
Well said Ram. However, when quoting from a webpage, it is mandatory to give credit.
http://en.wikipedia.org/wiki/Thiele/Small
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Old 29th August 2006, 00:50   #8
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Quote:
Originally Posted by Sam Kapasi
Well said Ram.
Thank you, Sam Kapasi.

Quote:
Originally Posted by Sam Kapasi
However, when quoting from a webpage, it is mandatory to give credit.
http://en.wikipedia.org/wiki/Thiele/Small
Do you see a difference between quoting from a webpage as in cut and paste,
and genuine research, which involves, searching, experimenting, understanding and correlating?

Ram
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Old 29th August 2006, 09:11   #9
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Quote:
Originally Posted by ram
Do you see a difference between quoting from a webpage as in cut and paste,
and genuine research, which involves, searching, experimenting, understanding and correlating?

Ram
Hi Ram,
This wasn't my attempt to downplay your knowledge of audio, which seems to be far greater than mine. Nor do I claim that you copied and pasted from anywhere.
However, from the order and choice of all the words of your post, (as anyone can see if they click on that link) it was quite obvious that you "quoted from" the wikipedia definition of thiele/small. However It was nice of you to cut out some words and try to make it a wee bit simpler.

You see, ram, to prevent plagiarism of any sort and to keep TBHP controversy free, it is mandatory to give credit to the source of your text. I hope you understand.
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Old 29th August 2006, 09:22   #10
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RAM, I often just post links, but I am lazy.
You went a step further and edited the wikipedia material to make is simpler.

TBHP just does not want to be caught with in controvery on plagarisim so it would be nice if you credited any/all websites you researched in the process of your post. Also it would give others who want to learn more links to follow if the feel the need.
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Old 29th August 2006, 12:05   #11
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Quote:
Originally Posted by Sam Kapasi
You see, ram, to prevent plagiarism of any sort and to keep TBHP controversy free, it is mandatory to give credit to the source of your text. I hope you understand.
Quote:
Originally Posted by navin
TBHP just does not want to be caught with in controvery on plagarism so it would be nice if you credited any/all websites you researched in the process of your post. Also it would give others who want to learn more links to follow if the feel the need.
Sam and navin:

First, accept my heartfelt commendations on your tactful expression.

You are absolutely correct. I agree completely with you, about the perils of the plagiarism tilt.

We will credit URL references in our posts, so we
steer clear of controversy and
provide additional reading refs to Team-BHPians who want to delve deeper.

Ram
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