Seems I saw a reference somewhere to wrapping horns with sound deadening foam. Is that a valid tweak or the emperor's new clothes?
Seems I saw a reference somewhere to wrapping horns with sound deadening foam. Is that a valid tweak or the emperor's new clothes?
Dr. Geddes has a patent. Here is some info from a guy who has done it: http://www.enjoythemusic.com/diy/111...waveguides.htm
Wrapping, stuffing, or edging ... they're all addressing slightly different issues,
although the last two are similar.
What example of "wrapping" might illuminate your question further?
Mass loaded paint or putty or tar can move a resonant point and/or
reduce it's "Q", as can simply mounting the horn to a baffle.
not foam but wrapping: http://i029.radikal.ru/0909/69/9022fa551072.jpg
el goregrind es cultura
Klipsch tweekers have done it for years using various and sundry types of rope caulk
As many variables are involved, I would think the degree of improvement would be commensurate with the amount of "ringing" or other unwanted behavior one was experiencing with the given horn related to spurious resonances as well as the overall size of the horn, it's construction material and the job it was being asked to do
In other words, a try it and see what happens type of thing
If you experiment with it, just do it in a fashion that is easily reversible
Clearly, there is some legitimate application for this (and reasons), witness the "tar filled" horns of ALTEC and many others during the "Golden Age"
I have tried it myself with the Klipsch "squawker" horns in several boxes back in the early 2000s; the results were negligible to my ears after being tempted with promises of great changes for the better
For smallish mid and high frequency applications I am skeptical (co-axials being the exception as the little horn sits right in the middle of an ocean of low frequency energy)
Still think it's degree of efficacy would be best determined on a case by case basis
+20 dBWaf. Make shure it is synthetic
el goregrind es cultura
I know you directed this to grumpy, but I say "no"
Don't think you'll encounter too many resonance problems with horns built like the H91!
What lens you choose (or build) now that's another matter
Yes it is "valid" if it cures a problem
Do you have a problem or are you just looking for one?
yeah... seems unlikely. Properly mount the horn to a baffle
and support the driver.
I know of at least one person who used a rubber-like spray on one
and it did indeed ring -much- less when whacked in free air, but I
don't recall if the owner thought it made much of an audible difference
once installed...
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