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Fiberglass horns are ok, but need a good bit of damping added to reduce their contribution. I used many cans of plasti-dip and a bunch of mortite, it helps but wood horns are a better option imo. It's not a huge deal though, any horn is going to store energy and have a sound, but it's a type of sound that our brain filters out, kinda like how your brain filters out constant smells after a while. Also, IME time alignment at ~400 Hz isn't critical.
Thanks, Dave. I don't know the wavelength at that freq. but I guessed it was probably longer than my listening distance. Is that the correct way to look at it?
Why does it seem that horn loudspeakers are NOT accepted by more audiophiles and reviewers?
Using that formula, I calculated a wavelength of 2.5 ft. for a 450 hz. wavelength. My listening distance is about 12 ft. The voice coils of my compression drivers sit about 10-12 inches behind my woofer voice coils. Can anyone tell me, using this data, if the XO point is theoretically audible?I've never heard anything to indicate a seam but I wonder what science says on the subject.
Reply to Rusty Jefferson:....... To be sure there are some horns that sound great but most are quite expensive. The DIY horns can be built to the owners likes and dislikes to be sure but what I was trying for was maybe find horns that were already built that sound great thru out the audio range. .......
I like the Autotech horns. Which one would be the best choice? I'm open to changing the HF driver of course. - Woody
Glad to see some interest in this thread. I think horns have lots of potential, but in addition to the observations by undertow above, the other issue with them is getting a flat (linear) response curve from them. It's almost impossible. I have to say that some of the most life like systems I've heard had horn speakers. However, it is very challenging in most real world environments to get them to sound their best.
Dave,Have you tried lead tape?http://www.supersoundproofingsales.com/SSP-Lead-Foil-Tape-1-X-50-Roll/productinfo/09-42750-LF1-50/
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