Rear ported speakers can benefit from diffusers?

[zintolo]

Hi, I have a pair of Klipsch RF82 ( https://www.klipsch.com/products/rf-82-floorstanding-speaker ) that have rear ports.

Will the placement benefit from rear diffusers like these ones: http://p10hifi.net/FH/download/EdHorn-deflector-230607-map.pdf ?
Will it be easier to place them closer to the walls behind them? Is it possible to predict how and if the bass will change?

Thank you in advance,
Roberto

 

[freddi]

for a low cost you could make an impedance measuring jig to use with Room EQ Wizard ("REW")and observe any downwards shift in tuning. I'm not sure of a benefit of such a device - Will it allow closer placement to a rear wall without much downwards shift in fb ?

https://www.roomeqwizard.com/help/help_en-GB/html/impedancemeasurement.html

 

[TNT]

No frequencies with short enough wavelength is coming out from a port that will take any whatsoever notice of a diffuser. Answer is thus, no.

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[zintolo]

Thanks @freddi , so rather than predict it will be a matter of measure it.

Thanks @TNT , even if the diffuser is directly placed on the rear wall, there will be no benefit?

 

[TNT]

No.

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[planet10]

EdHorn-deflector-230607-map.pdf

Wow. 15+ year old drawing Ron’s deflector. Don’t know if anyone ever made these ones. They were done to decrease the waveform coming back off the wall re-entering the horn-mouth, as well as effectiviely increasing the mouth size.

Here is the original that informed the EdHorn one.

I don’t think it will make much difference to a vent. It may affect your acoustics but that is a different thing.

dave