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In the Forum: Horn-Loaded Speakers
In the Thread: Problems with horns: upper bass
Post Subject: The front and back loading and radiationPosted by Romy the Cat on: 11/8/2008
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 Dresden wrote:
I'm a new reader of your website and one subject which interests me a lot is that of upper bass horns.

As you have noted time and again (with which I agree almost completely, after reading a lot of 'research' [many claiming to defy the laws of physics]), is that most designs claiming horn bass loading under 100 Hz are false.  The laws of physics cannot change.

In light of this fact, I have one question concerning horn loading in the range of 40 Hz to 400 Hz:  Is it possible to attain good performance in this range in a design with both the front and back of the driver horn loaded?  (I'm in the process of designing a horn for this range, but I'm really interested in knowing if a design using the energy from both the front and back of the driver might yield good results--perhaps higher efficiency--without unacceptable phase, cancellation, or other potential problems.  One reason for wanting to limit the upper range to 400 Hz is that I may implement a partial bend near the throat to accommodate the proper length of the horn [the horn will be vertical with the driver facing downward and the sound exiting 90 degrees to the audience].  My aim is to use the system without a subwoofer.)

Any light you can shed on the matter will be most appreciated.

Dresden,

great question, complex question and I feel that it well-worth a separate thread: front and back lording and radiation. I, whatever it worth, generally against any dual loading. Unfortunately I have no time now to compile all my arguments into a sensible reply. I also do not exactly know why I am against it I need person some time to do some thinking and to rationalize it.  I might do it later. The front and back lording and radiation is certainly own animal and need to be viewed from own perspective…

The Cat

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