Pentium 70 door mounted sound insulation cotton trim board card card is not tight what is the reason
Four common construction methods:
The inner side of the outer side of the door of the door, that is, the inside of the cavity, the sheet of steel. First paste small vibration plate, and then in the small vibration plate posted on the sound insulation cotton.
Construction can be cut into small pieces of hand into the collage,
Inside the anti-collision beam is not posted.
The final outside the speaker that layer of steel plate stickers vibration plate, according to the shape of the original car waterproof film cut on the line, replacing the original car waterproof film.
Hello, this situation, it should be you put the sound insulation place wrong!
