Audi a3 sound insulation modification scheme, how much is Audi a3 sound insulation modification?

Audi a3 sound insulation modification scheme can actually do a systematic noise reduction treatment. The whole car is silent, and the price is thousands of dollars. Generally speaking, it is still relatively cheap and worth the money. Vehicle sound insulation engineering and materials Door: barley damping plate, hood: barley damping plate, fender: barley damping plate+sound absorbing cotton, chassis: barley damping plate+sound absorbing cotton, trunk. Hood part: it is an auxiliary part for isolating engine sound, and can also play the role of heat insulation and protecting hood paint. Front fender: it suppresses its own vibration and is also an auxiliary component to isolate tire noise. Blue diamond damping plate, sound-absorbing cotton. 4. Door: Restrain the vibration of the door, block the noise of the external environment and improve the sound effect. Sound insulation treatment of double-layer barley damping plate for door and partition. Cockpit floor: restrain the vibration under the car and block the road noise. Chassis is the hardest hit area of low frequency noise. In terms of sound insulation, sticking a layer of blue diamond damping plate and covering it with a layer of sound-absorbing cotton can effectively minimize the noise of the chassis. Trunk and rear wheel hub: reduce trunk vibration, block rear wheel noise and road noise, and absorb cavity vibration. The back box is very easy to produce * * * vibration noise. The treatment method is barley damping plate and sound-absorbing cotton.