【AT-AQ409 Door Tuning Damping, Sound Absorbing & Soundproofing Material Kit】

You’d like your door speaker sound to be a bit more enjoyable to listen to, and you want to reduce unwanted noise transmitted from around the door. If so, consider AT-AQ409.

This kit bundles the materials needed for door tuning, with a setup designed to make the work easy without specialized tools. Using a three-layer damping and sound-absorbing material and aluminum glass cloth tape, it helps suppress unnecessary vibration and sound transmission around the door—supporting the goal of having the speaker’s sound blend more cohesively within the cabin.

In addition to four types of soundproofing materials to fill the gaps between the inner panel and the door trim, it also includes sound-absorbing material to reduce unwanted reflections of the sound produced by the speaker. It’s not only a kit for increasing bass quantity; it’s also for those who want to prepare the door as a solid foundation for the speaker.

However, deadening is not something that delivers the same results just by applying materials. Depending on the vehicle model, the door’s structure, and the combination with OEM speakers or aftermarket replacement speakers, the way you think about where to apply materials and how far to cover can also change. If I were doing it, I would first confirm the customer’s preferred sound and current complaints, then apply the work selectively to only the necessary areas.

If you’re considering door tuning using AT-AQ409 or installation combined with a speaker replacement, let’s decide the direction together while looking at the vehicle model and your current system. We’ll propose not only based on the material performance, but also considering how the sound you’ll listen to every day will change after installation.

Main Specifications / Contents

【Basic Information】
Product name: AT-AQ409
Type: Damping, Sound Absorbing & Soundproofing Material Kit for Door Tuning

【Kit Contents】
・Three-layer damping and sound-absorbing material
・Aluminum glass cloth tape
・Four types of soundproofing materials to fill the gaps between the inner panel and the door trim
・Sound-absorbing material to reduce unwanted sound reflections from the speaker

【Installability】
・No specialized tools required
・Products for door tuning