How to Get Better Sound Out of the System in Your Car

With factory sound systems getting better and better, it isn’t always necessary to replace the system for ultra-high quality sound. There is, however, always room for improvement, so you can rock out to your favorite tunes on your daily commute or on long weekend road trips.

Explore some of these ways to enhance the stereo system that came in your car without swapping it out for an entirely new one. Any one of these methods can make a real difference, so try one or all of them.

Method 1 of 4: Add an amplifier

car amplifier installed

To truly turn up the volume pumping out of your car’s speakers, look to a standard power amplifier to do the job. These amplifiers can be bolted beneath car seats or your trunk’s floor to stay out of sight, but they won’t stay out of limelight.

Factory speakers are almost always capable of handling more volume than the stock, integrated amplifiers in your system, so just this one addition can make a huge difference. Such a power amplifier will draw additional juice from the battery to make your factory system as loud as possible.

Step 1: Purchase an amplifier wiring kit. Do-it-yourself attempts at adding an amplifier will require an amp wiring kit with a wattage rating that matches the watts of the amplifier.

Step 2: Secure the amplifier in place. You can keep the amp from sliding around by using velcro strips or bolts.

Common spots to choose include under the passenger’s seat and inside the trunk.

Step 3: Attach the positive cable. Make sure the positive cable is attached to the positive clamp.

Each wiring kit is a little different, but the essence of the process is to run the positive cable from the amplifier to the positive clamp on the car’s battery beneath the hood.

Step 4: Ground the amplifier system. Run the kit’s ground wire from the amplifier to a self-tapping screw in the floorboard.

Method 2 of 4: Install subwoofers

bass sound system

To achieve the biggest bass sounds from your factory system, you’ll need subwoofers to do the trick. These can be used with or without an amplifier. You’ll draw plenty of attention as you drive down the road, especially if you have other customizations.

Subwoofers greatly increase the range of sounds your factory system can emit, harnessing those coveted low audio frequencies that can only be achieved through a large size speaker like this.

As with any wiring job, it is advisable to enlist professional help if you are not experienced to prevent inadvertent damage to the rest of your car’s wiring. For those who opt to attempt subwoofer installation themselves, try the following steps.

Step 1: Purchase a prefabricated enclosure box. Procuring the setup already in place equipped with two or more subwoofers.

If the system is equipped with two or more subwoofers in place, it takes a lot of the guesswork out of installing them, and it doesn’t cost much more than buying the materials individually.

Step 2: Secure the box with metal L-brackets. Make sure that the box is fully secured using the L-brackets.

The size of the brackets will depend on the size of your box, but a general rule of thumb is to use brackets with a length in the back and bottom that is at least 25% of the length and depth of the enclosure box.

Step 3: Run 12-gauge speaker wire from the subwoofers to the amplifier. Connect the wiring up from the amplifier and the subwoofer.

The subwoofers and amplifier should have spots marked Input and Output as well as an indication of whether the spot corresponds to the Right or Left Subwoofer.

Match these up, bearing in mind that the amplifier provides the output while the subwoofers receive input.

Method 3 of 4: Apply deadening foam to your car’s interior

Turn your car into a virtual music studio with the installation of deadening foam. This filters out intrusive background noise from traffic, so your tunes ring loud and true. Deadening foam usually comes in rolls with an adhesive backing that sticks right to your desired surfaces.

Common places to install deadening material are inside the door panels, floorboards, and inside the trunk. Some music aficionados, however, go all out in installing deadener – also lining beneath the car’s hood and on the roof from the interior.

This sound-deadening foam will not only make your music seem louder and crisper, but it will also make your car sound quieter when it is running.

Step 1: Measure and cut the deadening foam. To apply deadening foam sheets, first measure the regions you wish to soundproof and cut out the size needed with a pair of scissors.

Step 2: Peel and press the first portion of foam into place. Peel the adhesive back away from one edge about an inch or two, and press it firmly to the surface to which you want it applied.

installing sound dampener in trunk

Step 3: Pull the backing off as you press the remainder of the foam down. For best results, slowly pull the adhesive away an inch or two at a time.

Smooth it into place as you work until the entire sheet has been applied.

Method 4 of 4: Turn to non-invasive add-ons

portable addon on dash

Nowadays, there is no shortage of digital gadgetry to augment your factory sound system’s range of functions.

Such non-invasive add-ons are portable and easy to use while greatly increasing your tune-playing ability. With such gadgets, you aren’t limited to AM/FM radio and CDs; you gain access to satellite radio stations and playlists you have stored on your smartphone or iPod.

Step 1: Consider different options. Investigate the different gadgets that will enhance your sound.

Some of these include portable satellite radios, which often attach to your dash and sync with Bluetooth stereos, coming with access to plenty of stations and the ability to pause and rewind.

Plug-and-play bluetooth kits insert directly into your stereo’s MP3/AUX input slot, so you can listen to songs from your smartphone through the stereo, while iPod adapters work in the same manner to hear iPod playlists.

With even just one of these augmentations to your car’s factory sound system, you can make a huge difference in the quality of your music’s sound or the range of music you can play. All of this comes without the hassle or expense of replacing the stereo system that came with your car. If you notice that your battery seems to be acting up after a new addition, be sure to have one of our mobile mechanics perform an inspection.


Next Step

Schedule Battery is dead Inspection

The most popular service booked by readers of this article is Battery is dead Inspection. Once the problem has been diagnosed, you will be provided with an upfront quote for the recommended fix and receive $20.00 off as a credit towards the repair. YourMechanic’s technicians bring the dealership to you by performing this job at your home or office 7-days a week between 7AM-9PM. We currently cover over 2,000 cities and have 100k+ 5-star reviews... LEARN MORE

SEE PRICING & SCHEDULING

The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details

Recent Battery is dead Inspection reviews

Excellent Rating

(227)

Rating Summary
217
7
1
1
1
217
7
1
1
1

Collins

13 years of experience
678 reviews
Collins
13 years of experience
Ford Mustang V6-3.7L - Battery is dead - Atlanta, Georgia
Absolutely superior. He was patient and thorough in testing the car and explaining why he was right and AAA was wrong. AAA continued to be wrong the next day in saying the battery wasn’t bad, causing me to then waste my time with a recharge. I texted Collins and he said “have them test it after their charge”. They did and finally admitted the battery — which they sold me —was bad and needed replacement
Honda Accord - Battery is dead - Atlanta, Georgia
Collins was very professional, easy to work with and explained things. I recommend him and your services highly. Thank you!

Phillip

20 years of experience
310 reviews
Phillip
20 years of experience
Chevrolet Impala V6-3.5L - Battery is dead - Fair Oaks, California
Friendly and very knowledgeable. He put me at ease and described needed further repairs. Trust is a great wood to use with Phillip and he was quick too.
Subaru Forester - Battery is dead Inspection - Sacramento, California
Phillip was kind, prompt, and personable. He helped get to the root of my problem and gave multiple courses of action to solve it. Would definitely book again.

Robert

23 years of experience
343 reviews
Robert
23 years of experience
Ford F-150 V8-5.4L - Battery is dead - Keller, Texas
Robert was a great mechanic and did a great job, he was on time for the appointment and fixed everything that needed to be corrected. At the the end, the truck had some code and he stayed to try and correct the issue.

Tony

41 years of experience
67 reviews
Tony
41 years of experience
Mercedes-Benz ML350 V6-3.7L - Battery is dead - Manteca, California
Very nice and quick. let's you know what's going on during the process while also teaching you a couple of things.

Need Help With Your Car?

Our certified mobile mechanics make house calls in over 2,000 U.S. cities. Fast, free online quotes for your car repair.

GET A QUOTE

Related articles

How to Install a Head Unit on a Stereo
Virtually Virtually all vehicles built in the past fifty years come with some sort of audio entertainment system as standard equipment. While most of the original equipment stereos (https://www.yourmechanic.com/article/4-essential-things-to-know-about-your-car-s-stereo-and-speakers) on newer vehicles offer adequate performance, the stereo units found on...
How to Replace a Hole in a Speaker
If If you want a good sound system, you need a good set of speakers (https://www.yourmechanic.com/article/4-essential-things-to-know-about-your-car-s-stereo-and-speakers). Speakers are basically air pistons that move back and forth creating different sound frequencies. Alternating current is fed to the speaker voice coil by...
New Media to Listen to in the Car
Whether you face a long commute every day or are planning a road trip, consider the following recommendations for audio entertainment.

Related questions

radio not working
The blower motor only working on high speed is a common symptom of a failing blower motor resistor (https://www.yourmechanic.com/services/cooling-fan-resistor-replacement); but the fact the radio stopped working at the same time is unusual. It's possible that this could still be two...
The clock in the car and light on the passenger airbag light
Hi there. Most of the time, the dimming and brightness of the dashboard lights (https://www.yourmechanic.com/article/how-to-repair-dashboard-lights-by-rocco-lovetere) are controlled by a switch on the vehicle's instrument panel or under the dash near the fuse box. In some cases, this dimming switch may...
The uconnect in my Jeep is not working properly.
Typically this type of issue involves a problem with the radio or media interface in the vehicle. There may be a loose connection or there may be a software update available to correct the concern. The best place to have...

How can we help?

Our service team is available 7 days a week, Monday - Friday from 6 AM to 5 PM PST, Saturday - Sunday 7 AM - 4 PM PST.

1 (855) 347-2779 · hi@yourmechanic.com