Toyota Landcruiser 70 Series Door Seal Kit, do they really work?

In this video we install a 70 series landcruiser door seal kit and we also do some testing with an SPL meter to read the in cabin Decibels (DB) before and after to actually see if these seal kits do anything! Here is how it went;

Before installation - Max dB 81.5 (100km), Max dB 82 (110km)
After installation - Max dB 78 (100km), Max dB 78.5 (110km)

A little info about decibels and sound intensity:
A 1dB increase corresponds to a roughy 26% increase in sound intensity (measured in watts per square meter). In terms of how loud something seems to a human ear, a 1 dB increase is barely noticeable. Most people can just detect a change in loudness at around 1-3 dB. commonly accepted rule of thumb is that a 10 dB increase is perceived as approximately twice as loud. So:
3 dB = a noticeable difference (about 2x the intensity)
Above info accessed from Grok AI.

Reduce wind noise and enjoy a quieter cabin with our Door Seal Kit for the 70 Series LandCruiser. Replace the ineffective stock pinch weld with our high-quality rubber-sealed version, designed to block out road noise and improve your driving experience.

Fitment Details:

Compatible with 70 Series LandCruisers up to 2024 (except single cab 79 series 2016+ with curtain airbags)
Compatible with 76, 78 and 79 Series LandCruisers

Svnty Offroad Link.
https://www.svntyoffroad.com.au/

Svnty Offroad Product Link.
https://www.svntyoffroad.com.au/colle...

Svnty Offroad 70 Series Collection.
https://www.svntyoffroad.com.au/colle...

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