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Is there a good reason to use a point source as home or studio system?

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Posted on February 11, 2016 at 09:53:33
mdg
Audiophile

Posts: 51
Location: Gilze-Rijen (Holland)
Joined: November 27, 2004
Hello everybody,

Who can fill in my question?

Often you see stereo home or studio monitors being promoted as point sources (without horns / directivity).

Especially in the home it doesn`t make sence for me to put a little full range in the corner against the sealing. All the reflections that would occur won`t be good for the overall sound quality/stero image.

Why don`t manufactureres use the line source approach where very little energy is pointed at the wrong directions?

gr. marcel

 

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RE: Is there a good reason to use a point source as home or studio system?, posted on February 11, 2016 at 10:23:33
"Point source" loudspeakers are over-rated.

"Line source", on the other hand, is limited by wavelength.

Your best option is to listen to some speakers, and buy the one which you like best.

At this moment, I like the Magico S7 a lot, which is neither a point source nor a line source. But, if I bought it, I'd be in divorce court.

:)

 

point source is (can be) very good for 3-D "image", posted on February 11, 2016 at 16:03:29
mhardy6647
Audiophile

Posts: 16018
Location: New England
Joined: October 12, 1999
Contributor
  Since:
October 23, 2016
"Image" technically refers to 2-dimensional localization, but I HATE the term "soundstage" to refer to placement of reproduced music in three-dimensional space.

Coaxial drivers can be just superb as far as I am concerned -- that's how I roll.

DSC_8060

(sorry for the distortion from the very wide-angle lens I used)





all the best,
mrh

 

RE: point source is (can be) very good for 3-D "image", posted on February 12, 2016 at 05:12:45
horn kid
Audiophile

Posts: 128
Joined: November 2, 2014
No. A point source has very wide dispersion, and will therefore interact the most with the room. If you want the reflections to be the closest to the speakers, creating the shortest possible time between sound at the driver and reflections, and if you want the most sound bouncing around the room as possible, sure, point source. But why would anyone want all that distortion?

The purest, lowest distortion, most coherent sound I have ever heard comes from waveguide-type loudspeakers....horns.

 

RE: point source is (can be) very good for 3-D "image", posted on February 12, 2016 at 05:52:06
tomservo
Manufacturer

Posts: 8210
Joined: July 4, 2002
But remember that a point source only implies radiation equally vertically and horizontally usually by something that was too small to have any directivty in other words it radiates equally in all directions producing a spherical radiation balloon.

In that light, recall that some horns are also "point sources" that radiate only a portion of a sphere, but not the entire sphere.

The reason the point source can produce the most realistic stereo image is that from microphone to loudspeaker, all the parts of the chain have a single "time", any single event is preserved as a single event all the way to the loudspeaker terminals. Crossovers and multi-way systems as well as uncontrolled diffraction or UN-intended radiation all corrupt that incoming signal by spreading the event out in time, according to frequency.

Tom





 

all good points and duly noted (nt), posted on February 12, 2016 at 07:59:55
mhardy6647
Audiophile

Posts: 16018
Location: New England
Joined: October 12, 1999
Contributor
  Since:
October 23, 2016
nt
all the best,
mrh

 

RE: point source is (can be) very good for 3-D "image", posted on February 14, 2016 at 15:47:49
huubdas
Audiophile

Posts: 138
Joined: August 30, 2009
Very nice, are they sand filled ?

 

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