Subaru Outback Noise Reduction Treatments
Author: Eric Dellolio
Last Updated: February 9, 2024
Read Time: 6 Minutes
February 9, 2024
Author: Eric Dellolio
Updated: Feb. 9, 2024
Read Time: 6 Minutes
The Subaru Outback was first introduced as a station wagon back in 1994. Subaru wanted to design a budget-friendly and economical car that wouldn’t sacrifice interior space. The Outback’s wagon configuration and Boxer 4-cylinder engine accomplished all of these things at once. Subaru even gave the Outback an optional advanced AWD system that would help the car get through nearly any adverse driving conditions with ease. All of these things put together result in a very popular wagon that was loved by the masses.
Today, the Subaru Outback is still known as one of the most versatile yet economical cars on the market. There is however, one issue that drivers of the Outback have consistently dealt with since 1994; cabin noise and road noise. That’s why we’ve developed a guide to the best Subaru Outback sound deadening treatment.
Subaru Outback Cabin Noise Reduction Treatment
We sell the following two of our most popular products together in our Vehicle Soundproofing packages, Damplifier Pro and the Luxury Liner Pro. Our vehicle packages come in different sizes based on the type of vehicle. For a Subaru Outback we recommend our Compact Sports Utility Package to give you appropriate coverage and the best results.
What is Damplifier Pro?
Damplifier Pro has been the best performing sound deadening mat for over 20 years. If you are having rattling or vibration noises coming from your floor, firewall, door, trunk, roof or hood, these noises are what we call “structural”. The Subaru Outback is notorious for having this type of cabin noise because of the hollow doors that lack any sound deadening material at all and the general lightweight construction used throughout the interior. Plus, the open wagon design acts as a small amplifier for a lot of these structural noises once they’re released into the cabin as airborne noise.
Unwanted cabin noise is caused by vibrational energy being transferred through the metal body panels of your Outback. Damplifier Pro is designed to silence those structural noises by damping the vibrational energy By dissipating the structural energy in the form of low level heat, you’ll stop the structural noise that’s getting in your cabin. You should apply Damplifier Pro to any metal parts such as your inner doors, under the carpet, or behind the firewall to deaden the vibrational energy and get a noticeably quieter cabin. We recommend 60% coverage to hear a massive difference in the noise level within your Subaru Outback.
What is Luxury Liner Pro?
The next layer for your Subaru Outback noise reduction is Luxury Liner Pro. You’ll apply this material with 100% coverage on the cabin side firewall, floor and trunk. Luxury Liner Pro is our best performing automotive sound barrier and is known industry-wide as being one of the best sound deadening products on the market. Think of it as an extremely dense extra wall that you install between the cabin and the sources of airborne noise in your Subaru Outback (engine noise, tire noise, and road noise). You're going to want to get as close to 100% coverage as possible because the better your coverage, the better the barrier and the less noise you will hear. This is because airborne noise will enter through the weakest point in any barrier so leaving gaps is like drilling a hole in your gas tank before you fill up your car. Combined with a vibration damping material like Spectrum or Damplifier Pro, Luxury Liner Pro is the best soundproofing treatment you can give your Subaru Outback.
How to reduce Subaru Outback Tire Noise
Road noise, especially while traveling at high speeds on the highway, is one of the most common noise complaints we hear from customers. Oftentimes, this noise can be amplified by the design of the Outback and can distort any car audio system, and in some cases can even prevent passengers from having a normal conversation. If you are dealing with unwanted road noise and tire noise, Spectrum Spray Liquid Sound Deadener as a wheel well sound deadening treatment is going to be the most cost effective treatment for a significantly prominent difference in noise reduction. Many customers choose this treatment because it is easy to install and you do not need access to the interior of your Outback. To install the Spectrum Liquid Deadener, you apply 3mm of Spectrum into each wheel well. This is applied as 1mm layers directly to the metal for a total of three layers. Application can be done by spraying the liquid deadener onto the wheel well, or painting it on with a brush or roller. Just 2 gallons of Spectrum Liquid Deadener will cover four wheel wells. With a Spectrum application like this, you should expect cabin noise in your Subaru Outback to be reduced by 3-5 dB on the highway.
Subaru Outback Road Noise: Customer Projects
2014 Legacy Outback
Make/Model: 2014 Legacy Outback
Type of Project: Subaru Outback Sound Deadening Undercarriage, Wheel Wells, & Doors
Products Used: 120 Sq Ft of Spectrum Liquid Sound Deadener (Undercarriage/Doors/Wheel Wells)
24 Sq Ft of Luxury Liner Pro Mass Loaded Vinyl (Outer Door Skins)
24 Sq Ft of OverKill Closed Cell Foam (Inner Door Skins)
2002 Legacy Outback
Make/Model: 2002 Legacy Outback
Type of Project: Full Soundproofing (Floor, Doors, Ceiling, & Cargo Area)
Products Used: 130 Sq Ft of Damplifier Pro Deadener (Floor/Doors/Ceiling/Cargo Area)
63 Sq Ft of Luxury Liner Pro Sound Barrier Material (Floor/Cargo Floor)
30 Sq Ft of Mega Zorbe Hydrophobic Melamine Foam (Doors/Hatch Door)
36 Sq Ft of Heat Wave Pro Thermal Insulation (Ceiling)
Accessories: Wooden Roller, Spray Adhesive (3 Cans), Fury Knife, Butyl Tape
The BEST Soundproofing Treatment To Reduce Noise In A Subaru Outback
This combination of materials will make a significant impact on Subaru Outback road noise, cabin noise, and engine noise. If you're interested in getting this exact package for your Subaru Outback, just send us a message saying that you want "THE WORKS" for your Subaru Outback!
- Damplifier Pro - 120 sq ft (72 sheets) - Apply to firewall, floor, doors, roof, and cargo area
- Luxury Liner Pro - 72 sq ft (8 sheets) - Apply as second layer on cabin side firewall, floor, and cargo floor
- Mega Zorbe - 60 sq ft (15 sheets) - Apply as a second layer in each door cavity and above the headliner
- Spectrum - 40 sq ft (2 gallons) - Apply (3) 1mm layers directly to the metal in all 4 wheel wells
- Mega Block - 16 sq ft (4 sheets) - Apply as a second layer to the hood