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Flocking?
Flocking?
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Old 27th April 2018, 10:50 PM   #1
OffGridKindaGuy is offline OffGridKindaGuy  United States
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Default Flocking?

Has anyone tried flocking a horn or a tweeter baffle with it? I wonder if it would change the reflection of high frequency and perhaps "soften" the tone a bit..


Flocking (texture - Wikipedia)
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Old 28th April 2018, 12:27 AM   #2
Pano is offline Pano  United States
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Flocking?
Do you think it would be better than felt or similar? That works well. I've also used faux fur. Works.
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Old 28th April 2018, 11:53 AM   #3
OffGridKindaGuy is offline OffGridKindaGuy  United States
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I've experimented with carpet, scrub pads and various cloth and even burlap. I don't have any equipment to actually "see" the differences but I have my ears and lots of time. Things do change and I'm always thinking outside of the box..


I figure flocking could be more flexible in the terms of creativity and appearance. Trying to treat a simple Piezo horn with anything else would be a pain..


**Dunno how this thread ended up here. I posted in the Construction area..**
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Old 28th April 2018, 12:17 PM   #4
TBTL is offline TBTL  Germany
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Peavey QT horns used foam at the horn mouth: https://community.klipsch.com/upload...62_6_85940.jpg
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Old 28th April 2018, 02:04 PM   #5
Pano is offline Pano  United States
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Flocking?
So did the Urei horns. It works.
Could be fun to buy some Christmas tree flock and have a go.
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Old 28th April 2018, 06:08 PM   #6
weltersys is offline weltersys  United States
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Quote:
Originally Posted by Pano View Post
So did the Urei horns. It works.
Could be fun to buy some Christmas tree flock and have a go.
Back in the early 1970's encountered some cabinets using re-entrant horns with the interiors covered with a "fuzzy" kind of texture.
Low frequency was 2x15".

I think they were branded ARB, but have not found any examples on-line.

As I recall, the "fuzz" did not seem to help the lost cause...
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Old 29th April 2018, 10:51 AM   #7
russc is online now russc  England
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Flocking for a speaker in an Indian restaurant perhaps?
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Old 29th April 2018, 11:16 PM   #8
PRR is offline PRR  United States
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Fuzz has little acoustic effect unless it is like 1/4 wavelength thick.

Estimating flock as 1/16 of an inch, I get 13KHz as a low limit.

You can experiment. Get a box or panel which is flock one side and not the other. Hold it near your ear and listen to ambient sound, both ways. Obviously any near-ear object will change the sound pattern. But what difference flock or not? I suspect very little, and only in the high sizzle end of the spectrum.

(True, even a 13KHz limit would take some of the curse off the Motorola piezos.)

The flock principle is extensible. Cut your own inch-long flock and it may absorb down to 800Hz. This is perhaps similar to the dead-cats school of room acoustics.
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Old 29th April 2018, 11:55 PM   #9
OffGridKindaGuy is offline OffGridKindaGuy  United States
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That was most of my intention. I love Piezo tweeters and have some control of them but the "Honkiness" is a tough one to deal with..


I've padded the rear chamber with cotton, fiberglass, foam, tissue.. All kinds of different materials. Each has their own effect. Never treated the horn surface as of yet. I'll be toying around with some flock in the near future, I'm sure. You have given me a direction that might just fix my dilemma! Thank You PRR..

Last edited by OffGridKindaGuy; 29th April 2018 at 11:57 PM. Reason: An OPpps..
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Old 6th May 2018, 04:18 PM   #10
Fast Eddie D is offline Fast Eddie D  United States
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I've seen acoustic foam glued to the front baffle. It was ugly but I guess it served its purpose.

Felt covered baffles are fairly common. My speakers have them. I guess it helps a little.

If you look at a lot of tweeters they have a mini baffle. The ubiquitous "phenolic ring" tweeter is a vintage example. And dome tweeters usually have a satin finish ring (either plastic or painted aluminum) which is no accident.

Finally, piezo tweeters can be tamed with a crossover. Typical impedance is about 100 ohms, so you can parallel a resistor (say 10 ohms 5-10 watt) and then employ traditional crossover techniques to tame the sound. Raw piezos hooked up with no crossover never sounded good to me. Even a 10 ohm resistor with a simple first or second order crossover cleans them up a whole lot. Try it!
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