Is It Necessary to Perform Four-Door Soundproofing?
2 Answers
It depends on the specific situation. Four-door soundproofing is relatively effective in shielding mid-frequency noise, but reducing mid-frequency noise does not significantly reduce overall noise because high-frequency and low-frequency noises still exist. It only changes the perceived direction of the noise source, improving comfort to some extent. Performing four-door soundproofing may result in the following two scenarios: 1. The car is quite old: If the noise is significant, performing four-door soundproofing can noticeably improve sound insulation performance and comfort. 2. The car is relatively new: If the noise is not severe, performing four-door soundproofing may not make a noticeable difference, as other noises such as engine noise, tire noise, and chassis noise still persist.
I've been driving for almost ten years and have tried various car models. Whether you need to do four-door sound insulation depends on the specific situation. If you frequently drive on highways or are particularly sensitive to tire noise, doing it can indeed reduce noise by three to four decibels, making music much clearer on the highway. However, you need to be careful with older cars, as removing door panels can easily cause clips to break, and reassembly may introduce new rattles. Additionally, budget accordingly—just doing the four doors costs around seven to eight hundred, and the effect isn't as substantial as replacing four Michelin quiet tires. For example, my Sylphy originally had only a thin layer of sound insulation material. After adding butyl rubber damping sheets myself, the door closing sound became more solid, but the weight also increased by over five pounds.
