Car Sound Deadening

A car door is a thin sheet of rattling metal with a speaker bolted to it. Without treatment, a lot of what the speaker produces is lost to vibration, rattles and road noise. Sound deadening fixes that, and it’s one of the best value upgrades you can make to any car audio system.

What sound deadening does

• Tighter, deeper mid-bass. Treating the door panel stops it flexing and buzzing, so the bass the speaker makes actually reaches you.
• Fewer rattles. Trim, cables and panels that buzz at volume get treated and secured.
• A quieter ride. Less road and tyre noise in the cabin, which makes long journeys easier and means you don’t need as much volume to hear detail.

The materials we use

We use a range of proven deadening materials from Dynamat, Dodomat and Vibe, along with acoustic foam in the right places, choosing what suits each job and each part of the car. You’re paying for the time it takes to do it properly, plus the materials it needs, not a set number of sheets.

Our levels of deadening

• Stage 1: included with every speaker install. We treat the area of the door around the speaker so it’s mounted solidly and sealed properly. This is built into every speaker quote as standard.
• Stage 2: full door treatment. We treat inside the door cavity and the outer skin, and add foam to absorb what’s left. This takes about an hour and a half per pair of doors, plus materials. Typically from around £210 per pair of doors, including materials and VAT. We’ll confirm the exact price for your car.
• Full car treatment. Doors, floors, boot, wheel arches, roof and parcel shelf for the quietest possible cabin. Quoted per car, because every vehicle is different.

Doing it with a speaker upgrade

If you’re upgrading your speakers, it’s the perfect time to have the doors treated. The door cards are already off, so you only pay for the strip-down once instead of twice.

Once the doors are treated, a proper DSP tune is what brings the whole system together.

An honest word on BMW and late Mercedes models

On many BMWs and newer Mercedes, the bass speakers live under the seats, not in the doors. That means treating the doors won’t change the sound much, though it can still make the cabin noticeably quieter. We’ll always tell you which it is for your car before you spend anything.

FAQs

Is sound deadening worth it? For most cars with speakers in the doors, yes. It’s often the cheapest way to get more out of the speakers you have or are about to fit.

Will it add weight? A little. A full bulk pack of deadening, enough for four doors, weighs around 15kg. Even a fully treated car adds less than the weight of a small adult, so it’s hardly noticeable on the road.

Can you just do my doors? Yes. You can start with the front doors and add the rears later.

Do you only deaden cars you fit systems to? No. We’ll happily treat any car, whether or not you’re having audio work done.

Get in touch for a sound deadening quote

Speak With a Car Audio Specialist