Bad Line Array Designs

I trust Gallo more than you. Maybe 8 of HIS mids are enough. I'll believe you when you test a design of your own using the exact same drivers.
Har har har... True that player.....

You still have the pre-amp for sale???//content.invisioncic.com/y282845/emoticons/laugh.gif.48439b2acf2cfca21620f01e7f77d1e4.gif

 
It's on ebay, knock yourself out.
Do I at least get a link to it?? //content.invisioncic.com/y282845/emoticons/crying.gif.ec0ebefe590df0251476573bc49e46d8.gif//content.invisioncic.com/y282845/emoticons/crap.gif.7f4dd41e3e9b23fbd170a1ee6f65cecc.gif//content.invisioncic.com/y282845/emoticons/blackeye.gif.66a1670f5aaf7f406e783a63e3387dc5.gif

 
i want a line array of those awesome bose drivers. i mean if a pair of them can fill a WHOLE ROOM with audiophile quality sound imagine what 16 pairs can do!!!
I think the Bose drivers are fine, it's that the *whole* design is crippled. Give me

Bose mids and let me choose tweeters and then we have a new system with

much better SQ. //content.invisioncic.com/y282845/emoticons/smile.gif.1ebc41e1811405b213edfc4622c41e27.gif

 
See, what can you tell from the picture? I can't really tell anything, maybe he used the distance as a phase coupling advantage. Who knows, I am sure there is a reason for what he did. Don't you think?
Everything I have read about line arrays goes against that design. Maybe he did it because it looks better and he knows some dipshit will spend a buttload of money on it.
 
Tell me what laws of science you are referring to.
Yea.... Good question....

Everything I have read about line arrays goes against that design. Maybe he did it because it looks better and he knows some dipshit will spend a buttload of money on it.
But, some dipshit will spend a butt load of money on it...

//content.invisioncic.com/y282845/emoticons/naughty.gif.94359f346c0f1259df8038d60b41863e.gif

 
To understand the issue better. You need to know what is a line source vs.

line array.

A line source is a tall and narrow radiating surface, ie you have a 7"

contiguous planar, ribbon, etc driver, could be a midrange driver or tweeter,

even woofer, lol.

A line array is a group of radiating elements in a straight line and it's not

contiguous.

By definition, a line source speaker is different than a line array speaker.

You can have line source performance from a line array design - by stacking

drivers close together to create the illusion of one radiating surface. By using

the comb filtering formula, you can develop a line array to mimic a line source.

You can also cheat a little bit on the design.

Problem is;

The Gallo speaker claims -> The "LS" in the 5LS's model designation stands for "line source"

Obviously it's not a line source. It's a line array as you have a group of radiating

elements; the seperate midranges and tweeters.

Furthermore, for it to be a good line array design, by spacing the tweeter

elements far apart is very counterproductive to making a proper line array.

The midrange can be spaced further apart depending on the drivers and crossover frequency. You can also cheat the midranges but not the tweeters.

You said you trust Gallo more than you trust me but science tells you

that the Gallo design is a bad design and there is nothing they can do

to compensate for everything that is in error in the design.

If you were to audition this design and it sounds good, that is ok --- really ---

You can say "Hey, I heard this Gallo speaker XYZ and it sounded good".

But it would be wrong to say "Hey, I know what a line source speaker sounds like

because I heard the Gallo XYZ speaker". **No you did not. You didn't listen to a line

source speaker, but you did listen to a poor implementation of a line array *

.. lol ...

It is also wrong to say "Hey, I don't like line array speakers because the Gallo XYZ speaker

I auditioned sounded poor".. * Yes, you did listen to a line array speaker, but it's poorly

designed and maybe that's why it sucked... next time listen to a better design *.

.. lol ...

 
Jim bashes the line arrays that I posted in this thread supporting my claims...

hee hee harr harr........

http://audioroundtable.com/ArraySpeakers/messages/1333.html

The Alltronics focused array is what I call a double dumb speaker. First, the designer must be crazy to spend money to develop such a limited design and secondly, the purchaser must be crazy to pay over $20K for a system with those shortcomings.

 

If you visit the http://www.atssounds.com website that describes these speakers they state:

 

"The “sweet spot” is approximately one foot wide, three feet deep, and only 3 inches tall. Persons outside the spot will experience a very pleasant, full sound, comparable in quality to many fine speaker systems. But the person inside the listening area will experience a sonic experience which is breathtaking in its presence, clarity, depth, and accuracy."

 

That is truly a single chair ride in anybody's book. If you slump or sit up in your chair, you lose the magic experience.

 

Just how many of these focused arrays do they really plan to sell anyway? How many fools in the universe?

 

Jim

http://audioroundtable.com/ArraySpeakers/messages/1332.html

Gallo's speakers focus on their looks vs. any pretext of sound engineering so keep that in mind when you see such a design. Unless Gallo is operating in a different universe than we are, they the elements of acoustical physics still apply to his designs versus the rest of us.

 

The intermixed spacing of woofers and tweeters is still subject to the same combing concerns as more conventional arrays. This is especially the case for the woofers. The center to center spacing between the woofers has to be at least 8 inches apart so figure on what such a spacing will impact combing from the woofers. This combing isn't a good thing by any means. The tweeters are likely ribbons so they will be less apt to exhibit combing effects if the vertical plane radiation overlap is somewhat limited. Short ribbon tweeters do have more vertical plane overlap vs. longer ribbon versions but the overlap tends to diminish as frequency increases which reduces combing as I explain in my white paper.

 

While Gallo claims no crossover, the low pass filter on the woofers is part of a crossover per se. In reality he is using the acoustical roll off characteristics of these drivers and the low pass filter on the woofers to effect a crossover. Line arrays with low order crossovers tend to have more issues with interferences and combing so I would not suggest that this design concept is worth of emulation.

 

Jim

//content.invisioncic.com/y282845/emoticons/beatdeadhorse5.gif.5d70132dea1eb89b73bf2fdbb6027dd6.gif//content.invisioncic.com/y282845/emoticons/handclap.gif.0c301076f534e244f0460706894f19e0.gif//content.invisioncic.com/y282845/emoticons/woot.gif.aaa6090e619a97b6090d16dd863c5a69.gif

 
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