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Multi-Way Conventional loudspeakers with crossovers

The Preference for Direct Radiators
The Preference for Direct Radiators
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Old 16th December 2018, 10:40 AM   #111
AllenB is offline AllenB  Australia
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Originally Posted by Bicicletta View Post
Even more: people like dome tweeters, little cones and little baffles far away the walls. I have no comparison: I never heard a quality horn system.
I think about it this way: direct radiators typically fit a half space baffle, and this is arbitrary.. it doesn't fit the room directly. If you want to fill the room (maybe randomly), but efficiently, then this is not the optimum way both because the directivity isn't that way inclined and because it changes with direction.

Headphones (good ones of course) can show you how clean a reflection free environment can be, except that speakers can be so much better .

Last edited by AllenB; 16th December 2018 at 10:43 AM.
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Old 16th December 2018, 06:52 PM   #112
Bicicletta is offline Bicicletta  Europe
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It could be useful play with a simulator.
A driver radiates in the whole space, wavelenghts long compared to the baffle.
It radiates high frequencies in half space. In beetween it's a mess.

Two images: a box 30cm wide, radiates 400 and 4000 Hz
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Old 17th December 2018, 02:54 AM   #113
Brett is offline Brett
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Quote:
Originally Posted by Bicicletta View Post
Even more: people like dome tweeters, little cones and little baffles far away the walls.
Some people do, I don't.

Quote:
Originally Posted by Bicicletta View Post
I have no comparison: I never heard a quality horn system.
I have.
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Old 17th December 2018, 03:00 AM   #114
cowanaudio is offline cowanaudio  Australia
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The Preference for Direct Radiators
I like little cones, but they have to be horn loaded
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Old 17th December 2018, 05:33 AM   #115
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I like little cones, but they have to be horn loaded
Touche.
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Old 17th December 2018, 10:12 AM   #116
AllenB is offline AllenB  Australia
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Voila
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Old 17th December 2018, 10:18 AM   #117
AllenB is offline AllenB  Australia
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Quote:
Originally Posted by Bicicletta View Post
In beetween it's a mess.
It is possible to create any directivity at any frequency. It isn't always easy.

Before you try you should know what is useful for the room to work with. There are a number of ways to approach it, and there is not one way to illuminate a room precisely. Once you figure out what is and isn't audible, and how far you are prepared to go, and what is mandatory (such as tweeter at ear height), then clear options will follow.
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Old 17th December 2018, 10:46 AM   #118
Bicicletta is offline Bicicletta  Europe
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Damn! I'm just working on a simple 2way, with tweeters installed at 2.2 meters.
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Old 17th December 2018, 08:54 PM   #119
AllenB is offline AllenB  Australia
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OK then, going back to your original question.
Quote:
Originally Posted by Bicicletta View Post
Can a direct radiatior bring more easily and faster to a random reverberated field?
You want to fill the reverberant space, and probably reduce the early reflections. One thing you can do is sit close enough that you avoid the ceiling reflection. If you place the speakers well apart the opposite wall reflection is longer. The near wall will be stronger.

What you can do is treat the nearby reflections with absorbing panels. Remember that the tweeter goes narrow at the top end and its reflection may suffer.
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Old 17th December 2018, 10:57 PM   #120
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Hmm, I take it to mean he wants to 'light up' the room as quickly and as much as possible, which at minimum would be the tiny driver/baffle well away and angled from the sound wall and up or down vertically depending on the room acoustics and/or personal preference to create an concert hall bowl type reverberant sound field.

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