Poly-Fill for speakers

[CMillBronco]

I'm getting ready to change out all my speakers and was wondering if anyone has put Poly-Fill in the pods, kick panels, and dash locations? I just finished up the OEM Sub enclosure and have a bunch left so thought I'd put some in those locations too. Looking for advice/experience one way or the other.

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[Wannabe Techie]

Yes, my installers put them in. Doesn't hurt so I asked they put them where they could.

 

[ATLBronco75]

I put it everywhere.

 

[Hossfire]

Here' my opinion (and the science behind it). Polyfill can help with certain types of enclosures. It usually helps woofers and subwoofers where the enclosure size is a little on the low of the speaker's recommended spec. The polyfill slows down the sound waves, making the enclosure 'sound' a little larger. The 4" produce very little bass, so polyfill probably won't benefit much. The 6.5" kick enclosures are plenty big for that size woofer. It's not going to hurt to put them in either (unless some idiot totally overstuffs them to the point of interfering with the woofer motion).

The factory sub location ( particularly if you throw in a Kicker Comp RT, which is quite popular) is a good application for polyfill.

For the front speakers (particularly the kicks) fast rings are more important. They will help direct more mid-bass into the cabin. I wouldn't bother with the 4"--- A little cheap foam weatherstripping from the hardware store would be more than adequate.

 

[CMillBronco]

Here' my opinion (and the science behind it). Polyfill can help with certain types of enclosures. It usually helps woofers and subwoofers where the enclosure size is a little on the low of the speaker's recommended spec. The polyfill slows down the sound waves, making the enclosure 'sound' a little larger. The 4" produce very little bass, so polyfill probably won't benefit much. The 6.5" kick enclosures are plenty big for that size woofer. It's not going to hurt to put them in either (unless some idiot totally overstuffs them to the point of interfering with the woofer motion).

The factory sub location ( particularly if you throw in a Kicker Comp RT, which is quite popular) is a good application for polyfill.

For the front speakers (particularly the kicks) fast rings are more important. They will help direct more mid-bass into the cabin. I wouldn't bother with the 4"--- A little cheap foam weatherstripping from the hardware store would be more than adequate.

Thanks this is exactly what I was thinking but needed someone who knows to confirm it! I've never heard of fast rings before but after googling it I might need to try those.

I think I will add a little Poly fill to the pods along with some Kilmat to minimize the hollow sound but will just shelve my extra Poly after that.

 

[Hossfire]

Thanks this is exactly what I was thinking but needed someone who knows to confirm it! I've never heard of fast rings before but after googling it I might need to try those.

I think I will add a little Poly fill to the pods along with some Kilmat to minimize the hollow sound but will just shelve my extra Poly after that.

I watch a lot of car audio videos (particularly the 5 Star guys). I agree that the Kilmat treatment will help. Everyone seems to report that the B&O sub area badly needs treatment.

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