How to Improve OE Sub Bass Quality and Eliminate Vibrations

[jchadwell]

Has anyone found a trunk liner that has a shorter back wall height that would still allow for round ports?

for example the weather tech clearly would cover them, unless I made rectangular cutouts, no chance of that coming out nicely lol

Looks fine to me.

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[BA9092]

Looks fine to me.

That's what I did as well.

 

[shaloot]

You can buy F3x rings they fit. Also if you live by a salvage yard , you can get the hardware pieces including the correct torx bolts and D rings from any F3x BMW and they will fit. You do need to trim the carpet on top as they are not precut for the holes, but the holes are there

Thanks for the info, the cheaper Amazon trunk liners may actually be ideal if I wanted to just attach the rings to the liner as opposed to the factory locations.

I can confirm that these rings work and fit perfectly:

https://www.amazon.com/gp/product/B01CGXSNC0/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&th=1

Along with these bolts:

https://www.amazon.com/gp/product/B08XWWXYFJ/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&th=1

Are the holes for the bolts already threaded? So just need to poke a hole thru the carpet?

thanks for the links

 

[PikkaGTR]

Thanks for the info, the cheaper Amazon trunk liners may actually be ideal if I wanted to just attach the rings to the liner as opposed to the factory locations.


Are the holes for the bolts already threaded? So just need to poke a hole thru the carpet?

thanks for the links

Should already threaded from factory

 

[BA9092]

Thanks for the info, the cheaper Amazon trunk liners may actually be ideal if I wanted to just attach the rings to the liner as opposed to the factory locations.


Are the holes for the bolts already threaded? So just need to poke a hole thru the carpet?

thanks for the links

Yup, already threaded. I just put a small piece of plywood between the threaded holes and the carpeted trim then drilled through the fuzzy stuff.

 

[shaloot]

This cargo liner looks like it has the raised areas for the cars that actually came with the hooks, and the back can be cut to accommodate for the sub ports, but this one looks like it sits even lower than weather tech, maybe possible to use smaller ports and not have to cut the liner at all?
I’ll search to see if anyone has experience with this one or can measure the distance remaining for ports, since I’ve already sorta hijacked this thread, with cargo mats and nets lol.
But, it does seem like this one would make sense if people did NOT want to drill into the carpet, perhaps the hooks can be attached via rivets or something shallow enough to just sit underneath the raised section.
anyway, much appreciation to everyone who replied here!

 

[FLtrackdays]

Doesn’t look bad with the trimming, thanks for sharing!

Don’t expect anything less from a guy that took 3 years to shop out the Supra, wait another year for it to arrive, then turn it into car porn. Everything on that (his) car is spot on!

 

[whycantidrive]

Just did this today. Definitely sounds better than before. Bass sounds cleaner with edm music but... I mostly listen to hip hop so I'm not getting the deep bass I want.

For that I think I will have to go with at least one 12" sub. Shame I probably won't do it unless theres a clean oem style box for a 12.

 

[Davo307]

How much wadding are you guys putting in the "box"? Dont know if the wadding should be packed super tight or just be a little bit in there.

After I did it my left rear sub sounds like it's blown. Even had half or less volume with the OP's sound settings. When I turn Surround off, it's unplayable. I took some wadding out but the subwoofer still sounds like it's blown/bottoming out even at low volume (any volume really).

2024 3.0 with all the packages*

 

[BMWAF]

How much wadding are you guys putting in the "box"? Dont know if the wadding should be packed super tight or just be a little bit in there.

After I did it my left rear sub sounds like it's blown. Even had half or less volume with the OP's sound settings. When I turn Surround off, it's unplayable. I took some wadding out but the subwoofer still sounds like it's blown/bottoming out even at low volume (any volume really).

2024 3.0 with all the packages*

Ideally, the wadding is supposed to line the cavity, not fill it. While it may.. erm, sound like an incredible coincidence, the speaker may be blown in and of itself - I don't think there's any reasonable way the wadding could make that happen but it may have just highlighted an underlying issue with that sub?

 

[PikkaGTR]

I used the entire bag from Amazon
But no foam
I also have aftermarket Integral Audio subs which I'm sure made the biggest difference

 

[tadda]

How much wadding are you guys putting in the "box"? Dont know if the wadding should be packed super tight or just be a little bit in there.

After I did it my left rear sub sounds like it's blown. Even had half or less volume with the OP's sound settings. When I turn Surround off, it's unplayable. I took some wadding out but the subwoofer still sounds like it's blown/bottoming out even at low volume (any volume really).

2024 3.0 with all the packages*

Do not overpack the bass cavity with wading...You'll destroy lower bass response..

As described in my writeup only the inner walls of the cavity should be covered...I know some people have had problems in the past placing the thin sheet wadding against the walls...And although less than ideal, you can also pull the wadding sheets apart to fluff them up and very loosely fill the cavity...Just do not compress the wadding or you'll greatly reduce low end bass response...

 

[Davo307]

Ideally, the wadding is supposed to line the cavity, not fill it. While it may.. erm, sound like an incredible coincidence, the speaker may be blown in and of itself - I don't think there's any reasonable way the wadding could make that happen but it may have just highlighted an underlying issue with that sub?

I'll take some wadding out but I'm afraid you may be right. Reading more about how the driver side woofers are a known problem on these cars and Toyota won't do anything about it. It really just sounds like the speaker is bottoming out, or like you're in a 1999 Camry whose speakers are so old and worn out. The issue reduces some when putting it back in SURROUND mode. But then that compromises the quality of the rest of the music. Smh

 

[BMWAF]

I'll take some wadding out but I'm afraid you may be right. Reading more about how the driver side woofers are a known problem on these cars and Toyota won't do anything about it. It really just sounds like the speaker is bottoming out, or like you're in a 1999 Camry whose speakers are so old and worn out. The issue reduces some when putting it back in SURROUND mode. But then that compromises the quality of the rest of the music. Smh

If it's under warranty I'd take it back to Toyota and get then to sort it. If it's out of warranty, it might be a good excuse to put a nice Focal setup in. ?‍

 

[Davo307]

If it's under warranty I'd take it back to Toyota and get then to sort it. If it's out of warranty, it might be a good excuse to put a nice Focal setup in. ?‍

Still under warranty. 3k miles and only 6 months old. I just hate taking my cars to shops. Never trust them to treat the car like how I treat my cars. Thanks for the advice ?

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