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Ar9 amount acoustic absorber


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13 hours ago, giovanni56 said:

How many grams of polyester acoustic absorber are in the volume of the Ar9 woofers? Does anyone know? are there any engineering papers that report this? thanks

And it's interesting that the stuffing does not go down to the level of the woofers in the AR9, but rather is installed in the space above the woofers.

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5 hours ago, lance G said:

No stuffing ever installed from new, and not required ?

This due to only very low frequencies and a requirement for large air volume movement in this area of the cabinet/s.

This comes up periodically.

The answer is in the forum Library: https://www.classicspeakerpages.net/library/acoustic_research/ar-9_series_1978-1981/ar-9_series_other/engineering_the_ar-9_by_tim/engineering_the_ar-9_by_tim_5.html



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