80mil/190mil Premium Sound Deadener

Sundown Audio Sound Deadener – Premium 80/190mil Acoustic Damping Solution

Silence Isn’t Just Golden—It’s Performance.

For those who demand nothing but the best, Sundown Audio delivers with its 80mil / 190mil-rated premium sound deadener—a no-compromise material designed to eliminate resonance, reduce cabin noise, and maximize audio performance. Built using the same proven composition as competition-grade dampening products, this Sundown exclusive takes it further with refined quality control, enhanced adhesion, and the trusted performance only the Sundown name can bring.

Crafted for high-end builds and SPL systems where every decibel—and every detail—matters, this material combines dense, soft bitumen with a high-mass layer to stop vibration at the source. Whether you're sealing a trunk for subwoofers or lining a full competition car, this is your foundation for elite sound reproduction.

Why Sundown?

Because not all deadener is created equal. While others may share a similar formula, only Sundown Audio's variant undergoes enhanced QC, upgraded thermal bonding, and branding that backs performance with reputation. It’s the same concept, executed at a higher level—because that’s what the Sundown name stands for.

Product Highlights:

• Premium 80mil / 190mil density-rated composite
• Industry-leading acoustic damping power
• 15 sheets per box (10” x 20”) – covers ~20.8 sq ft
• Thick 4.0mm build for maximum low-frequency absorption
• Weight: 34 lbs per box
• Self-adhesive with Sundown-reinforced backing
• Color: Matte Black with premium finish

Installation Tips:

Clean the application surface thoroughly with isopropyl alcohol or a residue-free cleaner. For the best fit, use a heat gun to soften the material and improve flexibility. Press firmly over contours and curves to ensure full contact and long-term performance.

Return for refund within: 30 days

Return for replacement within: 30 days

Standard Return Policy Overview

You may return merchandise purchased from Showtime Electronics for a refund or a replacement, provided that the procedures and requirements are followed. All returns require a return merchandise authorization (RMA) number. An RMA number must be issued within 30 calendar days after the date of purchase. An RMA number is valid for 14 calendar days after it is issued. Once you log in to your user account, you will be able to Request and RMA. In addition, you can also request an RMA at the bottom of our homepage. If you have any issues, please email us at sales@showtimeelectronics.com

Free shipping is available in the continental United States, excluding Hawaii and Alaska.

International shipping is available and calculated at checkout.

All orders will receive tracking once shipped through USPS, Fedex, UPS, and DHL.