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The corners [message #85561] Fri, 07 July 2017 14:06 Go to next message
mamoss is currently offline  mamoss
Messages: 185
Registered: May 2016
Master
What do corners have to do with bass traps? Is it because bass mainly concentrates in these areas? I read that these traps adsorb much lower frequencies (as a result of their thickness).
Re: The corners [message #85574 is a reply to message #85561] Sat, 08 July 2017 12:36 Go to previous messageGo to next message
Wayne Parham is currently offline  Wayne Parham
Messages: 18670
Registered: January 2001
Illuminati (33rd Degree)

Corners are associated with all room modes - axial, tangential and oblique. So they are effective places to damp bass sound. But the best way to damp room modes is with panel absorbers. Look them up:
Re: The corners [message #85614 is a reply to message #85561] Wed, 12 July 2017 14:55 Go to previous messageGo to next message
johnnycamp5 is currently offline  johnnycamp5
Messages: 354
Registered: June 2015
Location: NJ
Grand Master
Speaking of the corners, I found this comment on an audio website, and it really confuses me.-

Quote-
"1) From my car projects, I've learned that using existing boundaries can allow one to make horns much much smaller than what would be "ideal." The typical solution is to use the corner of a home. I have tried corner horns, and I do not like the 'headphone' effect. Basically corner horns have no reflections, and that makes them sound a bit uninvolving, like a giant set of headphones".

Anyone care to comment on this?

Personally, I love headphones for the fact they have no reflections.
And I find them "more" involving because if this.

In this case, "Beauty is in the ear of the beholder".
Lol.


Re: The corners [message #85621 is a reply to message #85614] Thu, 13 July 2017 09:26 Go to previous messageGo to next message
Wayne Parham is currently offline  Wayne Parham
Messages: 18670
Registered: January 2001
Illuminati (33rd Degree)

He hit the nail on the head, saying a properly built constant directivity cornerhorn has no reflections.

But I must admit, there are not many loudspeaker models that do the trick. All sound sources must be acoustically close to the corner or they must be directional. Just placing a typical loudspeaker in the corner won't do because it isn't close enough acoustically through the passband. If done wrong, it's most noticeable in the midrange.

Re: The corners [message #85622 is a reply to message #85561] Thu, 13 July 2017 14:18 Go to previous messageGo to next message
johnnycamp5 is currently offline  johnnycamp5
Messages: 354
Registered: June 2015
Location: NJ
Grand Master
I see.

So by his description, it sounds like he may have had properly designed corner horns.

The part I find interesting is the comment that because there are no reflections-

"It makes them sound a bit uninvolving, like a giant set of headphones".

I have read many times, how some studio engineers prefer listening to typical stereo mains at home, even though they have the luxury of working with flush mounted speakers all day.

I guess what I'm saying is, I'm not sure I understand why someone wold prefer hearing these reflections, like living with a compromise that does not have to be tolerated.

Perhaps it is just to change things up once in a while,
an excuse to build something new.

As a diy'er, I am guilty of this myself lol.
Re: The corners [message #85625 is a reply to message #85622] Thu, 13 July 2017 16:29 Go to previous message
Wayne Parham is currently offline  Wayne Parham
Messages: 18670
Registered: January 2001
Illuminati (33rd Degree)

I took that inference from the OP comments too.

I digressed a bit about how a speaker must be acoustically close to the corner to gain the benefit of constant directivity. That is a significant fact, very important for the proper implementation of a constant directivity cornerhorn.

But like you said, if a person uses constant directivity cornerhorns that are designed and setup properly, they won't have any early reflections. The wavefront launch is perfectly pure. No other loudspeaker configuration can do that indoors, so it sounds different than other loudspeakers. It is sort of like headphones.
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