1. Using an equalizer 

The sound produced by the speakers of the car is bounced off from the glass as well as plastic surfaces. This is the reason why frequency response peaks are created. This distorts the sound which is produced through the car speakers.

Also, owing to this very reason the car speakers are not able to produce good quality of sound. In order to avoid this problem, an equalizer should be used. The equalizer will help you iron out the frequency peaks in the audio. This will ensure that the quality of audio produced by the automotive speakers is much better.

2. Using an amplifier 

With the help of the amplifier, you will be able to easily increase the sound output of the car speakers. You just need to make sure that the amplifier which you choose is able to produce all frequencies equally. When that happens, it will become easier for you to improve the quality of sound in your car.

3. Insulating the outside noise 

In order to improve the quality of sound in your car, you have to include the sound insulation material in your car. Something like the Dynamat can help you in insulating the outer vibrations as well as sound. This will ensure that you are able to hear the sound produced by the car speakers more clearly. This will also insulate any of the vibrations which are produced outside.

Normally, people think that there is no need for sound insulation. The truth is that, when you’re driving a 25 mph, there might be no need but when you’re driving at 60 mph, the vibration and sound of the engine can interfere with the audio which is produced by the speakers. That is why sound insulation material is always needed.

4. Bypassing the digital to analog converter 

The built-in digital to analog converter in the automotive audio system is not of great quality. When you’re listening with the help of earphones, you will have no complaints at all. However, when you are connecting it with full-fledged speaker system, the frequency reproduction is not that good. As a result, the quality of audio produced is not up to the mark.

Most of the times, car owners think, that the problem is with the speakers of the car. However, in such cases, the problem is with the digital to analog converter. In order to bypass this, good idea is to connect your smartphone with the help of USB cable. This bypasses the digital to the audio converter of your car stereo system. Thus, the speaker output will be partially improved.

5. Selecting the right music files

If the problem is with the music files, no matter what you do you will not be able to improve the quality of the audio produced by the automotive stereo system. This is the reason why you have to select the right kind of music files. Some of the tips which you have to follow are:

o Choose the files with a higher bit rate
o Do not use compressed music files

When you take care of these couple of factors, it will become easier for you to improve the output quality of your automotive stereo system. As long as the audio files audio files are up to the mark, the quality of audio reproduced by the automotive stereo system will be good enough.

You can also try and amplify the signal to noise ratio of the audio file. This will ensure that even if it is a self-recorded file, it will be improved in quality. When the noise is on the lower side, you can be sure that the sound quality of the audio file will be improved. There are plenty of signal-to-noise booster software which are available on the Internet. It will take you 5 to 7 minutes in order to process of the file of 5 audio minutes. As a result, your automotive stereo system will be able to produce better quality sound.

Noise removal:
You can also opt for complete noise removal from the audio file. This will ensure that you are able to get only the signals which you need in the audio. You can repeat the noise removal procedure on the audio file 2 to 3 times in order to remove any noise which might be interfering with the audio file.

Even after this, if the quality of the audio files is not improved, you have no other option but to use different files rather than that particular one.

6. Using the right tone controls

You need to keep in mind that when you’re increasing the tone controls up to 11, the sound might be good enough in your driveway. When you use the same setting while driving at 60 mph, the quality of the sound will not be that good. Similarly, when you’re using low-frequency music in your normal stereo system, it will strain the resources of the audio system. This will mean that the other frequencies are not reproduced properly. This is the reason why you have to use the tone controls accurately. Also, using a multiband equalizer is a much better option rather than individually setting the tone controls.