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Author Topic: Removing speaker grille foam  (Read 515 times)

Helge A Bentsen

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Removing speaker grille foam
« on: January 07, 2018, 05:43:08 pm »

Will removing foam from the inside of speaker grills affect sound quality?

Case in point, I'm refurbishing 8 KF750 and kinda like the look of them without grills, but I need the grill to support the horn, so I was thinking about using them without foam on the inside.

I haven't tried this yet, the grills need a paint job first which I'm hoping to start on next week.
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Dave Pluke

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Re: Removing speaker grille foam
« Reply #1 on: January 07, 2018, 07:54:31 pm »

Will removing foam from the inside of speaker grills affect sound quality?

*Might* impact the dispersion of the higher frequencies.

Dave
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Ivan Beaver

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Re: Removing speaker grille foam
« Reply #2 on: January 07, 2018, 09:16:48 pm »

Will removing foam from the inside of speaker grills affect sound quality?

Case in point, I'm refurbishing 8 KF750 and kinda like the look of them without grills, but I need the grill to support the horn, so I was thinking about using them without foam on the inside.

I haven't tried this yet, the grills need a paint job first which I'm hoping to start on next week.
I would suspect the grill itself would make a bigger difference than the foam.

Of course depending on the thickness and density of the foam.

All loudspeakers sound better without the grill-due to the blockage and backwards reflections that grills offer.

But then you have the protection of the drivers from the elements.

There are a number of tradeoffs regarding grills.
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Ivan Beaver
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Craig Hauber

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Re: Removing speaker grille foam
« Reply #3 on: January 08, 2018, 09:59:23 pm »

Will removing foam from the inside of speaker grills affect sound quality?

Case in point, I'm refurbishing 8 KF750 and kinda like the look of them without grills, but I need the grill to support the horn, so I was thinking about using them without foam on the inside.

I haven't tried this yet, the grills need a paint job first which I'm hoping to start on next week.

I find a lot of grills rattle when the foam is removed.  You will need a roll of foam weatherstripping to gasket everywhere that metal touches.  Then tap gently all around on it with a rubber mallet to find the rattles and add more foam if necessary.
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Craig Hauber
Mondak Sound Design
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