How to Improve OE Sub Bass Quality and Eliminate Vibrations

[Dungslinger]

@4pokeguy

I ordered those, they fit.

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[bajanstefan]

The Dynamat didn’t do much for road noise. I installed a sheet of Second Skin underneath the trunk mat. The material is thick and eliminated 90% of road noise from hatch area.

Second Skin Luxury Liner Pro - 2 in 1 Sound Insulation for Cars - Mass... https://www.amazon.com/dp/B01NAFWT3S/ref=cm_sw_r_sms_api_glt_fabc_PBF8GK843SWNCAJRHYQD

How did you cut and install? I'm guessing in precise panels so nothing that wasn't covered before became covered?

 

[Tripjammer]

This is like the best MOD to the Supra...glad I did it months ago...

 

[Loco38SUP]

How did you cut and install? I'm guessing in precise panels so nothing that wasn't covered before became covered?

I used the trunk battery cover as the outline. Its the same size and shape. The 2 pieces of cheap insulation glued under cover will need to be removed. The bottom up stack is: Second Skin, Battery Cover then Supra mat.

It did raise the Supra mat but not enough to cover anything or misalign panels.

-RJM

 

[MyCorolla]

The Dynamat didn’t do much for road noise. I installed a sheet of Second Skin underneath the trunk mat. The material is thick and eliminated 90% of road noise from hatch area.

Did it reduce any of the exhaust symphony? Did you remove the Dynamat?

 

[Loco38SUP]

Did it reduce any of the exhaust symphony? Did you remove the Dynamat?

I left the Dynamat as it helps stop vibrations from the subs. And yes it killed my exhaust note inside the car. I turned the ASD back on to at least hear something.

-RJM

 

[nosavingthrow]

Here is yet another area that required attention for eliminating subwoofer grill rattle / vibrations...I did this awhile ago and thought it might be helpful to post while we're on this topic....

Quick question about this: is there any reason I might need to remove those covers in the future? I assume it isn't going to be easy to get them off once they are glued on.

 

[tadda]

Quick question about this: is there any reason I might need to remove those covers in the future? I assume it isn't going to be easy to get them off once they are glued on.

Just make sure you secure the area between the spoked cover and circular plastic grill plate (which can be separated from one another) and not the area between the bottom of the grill plate and felt top woofer cover that I've seen some mistakenly do...It's the area between the spoked cover and grill plate where some vibrations can occur...Then the cover assembly (spoke and grill plate) can still be removed in the future to access the woofers...

You can use either small circular adhesive backed felt pads or apply small dollups of silicone adhesive which I found to be more effective...

 

[nosavingthrow]

Just make sure you secure the area between the spoked cover and circular plastic grill plate (which can be separated from one another) and not the area between the bottom of the grill plate and felt top woofer cover that I've seen some mistakenly do...It's the area between the spoked cover and grill plate where some vibrations can occur...Then the cover assembly (spoke and grill plate) can still be removed in the future to access the woofers...

You can use either small circular adhesive backed felt pads or apply small dollups of silicone adhesive which I found to be more effective...

Thanks for clarifying, makes sense!

 

[Ktowndevil]

Hey guys, I did a sound test of what it sounds after the whole process, mine is a slightly bit tweaked from taddas but seeing as how no one made a sound test here you guys go.

7 minutes thou ?

 

[METAL]

I have found a new vibration since my audio build.

The third brake light area. Not just the center piece but a majority of that plastic against the glass.

@tadda any ideas for a solution on that area?

 

[tadda]

I have found a new vibration since my audio build.

The third brake light area. Not just the center piece but a majority of that plastic against the glass.

@tadda any ideas for a solution on that area?

Yeah, I fixed that a while ago....pull off the plastic cover plate and place thin adhesive back felt strips in areas where plastic cover edges meets hatch cover...

 

[digicidal]

Hey guys, I did a sound test of what it sounds after the whole process, mine is a slightly bit tweaked from taddas but seeing as how no one made a sound test here you guys go.

Sounds exactly like the speakers in my office through which I'm listening to the video.

I'm sure it sounds much better now... but a YT video isn't going to prove that one way or another. Congratulations on the completing the project however.

 

[dazza]

I have found a new vibration since my audio build.

The third brake light area. Not just the center piece but a majority of that plastic against the glass.

@tadda any ideas for a solution on that area?

Yes I that issue too. I used tessa tape line the plastic area where it touches the metal/glass and clipped it back into place. No issues anymore.

 

[Deighvid]

Finally got around to doing this. Another happy follower here!

Everything turned out great and I didn't think I would be able to tell the difference since I can be rather daft at noticing subtleties but it genuinely makes a noticeable difference. Like others have said, clearer bass with less distortion and no more random rattle/vibrations.

Thanks for the write up!!

Random photos ft. my pupper. Lol

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