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differences in APT horn flairs [message #45334]

Wed, 08 September 2004 14:59

Chris R
Messages: 133
Registered: May 2009

Master

Hi Wayne, others,

Aside from shape, looks, etc. what's the difference between the
three horn flairs that emeinence offers with the APT drivers?
There's quite a price spread, and I'm wondering if one sounds
better than another and why.

Thx, Chris

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Re: differences in APT horn flairs [message #45340 is a reply to message #45334]

Wed, 08 September 2004 19:41

Wayne Parham
Messages: 18792
Registered: January 2001

Illuminati (33rd Degree)

I'm not sure this will help much but here goes. The APT:200 is shaped like a JBL 2344. The APT:80 is a small round conical horn with 80° pattern. APT:150 is a rectangular CD horn with 100°x50° pattern. The 80 and 150 cost about the same, and the 150 is a little more. All of 'em are designed for 3.5kHz minimum.

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Re: differences in APT horn flairs [message #45347 is a reply to message #45340]

Thu, 09 September 2004 12:26

Chris R
Messages: 133
Registered: May 2009

Master

I was hoping for some input on percpetable sound differences.
I've seen comments from you about liking exponential and/or
radial horns over CD horns, though I don't remember why.

Thx, Chris

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Re: differences in APT horn flairs [message #45349 is a reply to message #45347]

Thu, 09 September 2004 15:21

Wayne Parham
Messages: 18792
Registered: January 2001

Illuminati (33rd Degree)

I don't really care for the sound of CD horns with sharp edges. They're designed to control the radiating angle at frequency extremes, but I believe they do this at the expense of sound quality. I much prefer 90°x40° radial horns with straight side walls and a simple radiused throat. These provide nearly constant directivity in the horizontal plane and uniformly collapsing directivity in the vertical plane, which I think sounds great. It is also relatively easy to work with in the crossover, because their shape allows tight vertical spacing, which in turn sets the vertical nulls outside the HF pattern. The end result is a speaker with very smooth response with a desirably large 90°x40° forward lobe.

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