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Old 20th June 2017, 08:12 PM   #1
sagitis is offline sagitis  Australia
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Default speaker effuser ?

Anyone used this before, from the desription it is to attach behind the magnet to absorb the residual bass, and further enahsnce mid range clarity

??????????????????????????????????????????DF-25?2???????????????????? 25cm???????????????????????????????????????akibain pulse
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Old 20th June 2017, 09:54 PM   #2
boswald is online now boswald  United States
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Won't do much of any thing.
Apparently they are under the impression that sound moves like light, as both wave and particle(as in rays of light). Which it does not. Nor does it move like flowing water or air. Sound is a wave that propagates through a medium without significantly displacing that medium. If it is mounted with a magnet it may have a small effect on field strength in the gap, but not much. It looks like they want it to act as a one way valve for air flow, but the air is vibrating, not flowing.(and the wave will diffract right around in both directions)
Save your money.

Last edited by boswald; 20th June 2017 at 09:55 PM. Reason: sp
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Old 20th June 2017, 10:14 PM   #3
JMFahey is offline JMFahey  Argentina
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Location: Buenos Aires - Argentina
Audiophile grade snake oil.

According to them backwave follows exactly the path they show and none else (nonsense), gets reflected exactly back into de magnet, and messes bass reproduction (enriches the musical scale of the bass) and soundstage (the sound localization is clearer).

But by gluing this fiberglass pad to the back of the magnet "you can save your cabinet and/or make it smaller without loss of quality"
"Used by 10000 people"
"Akihabara Radio Hall 1st store recommended item"
"Improves any speaker from 2" to 15" and more"
"if the sound absorbing material, or cotton is packed in such a degree that the wind leaks a little into the hole of the port, the phase shift disappears and the position of the instrument becomes very easy to understand"

and so on and on and on.
Design/make/service musical stuff in Buenos Aires, Argentina, since 1969.
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Old Yesterday, 01:27 AM   #4
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There are pads for the backwall of the cab which make much more sense.
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Old Today, 12:21 AM   #5
gedlee is offline gedlee  United States
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A classic, on par with Monster Cables. The Chinese just love this "Zen" stuff.
Earl Geddes Gedlee Website
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