This mod brings back a similar soundproofing from 1.42 for ETS2 default trucks affected by the 1.43 interior cabin sound update.
You can enable this mod with low priority in the Mod Manager if you want.
Modders are welcome to use the baseline settings provided in this mod for sound_effects_units.sui
Tip: Do not stray too far in increasing gain values, because it may affect all sounds such as traffic and ambient sounds.