Now you may be wondering what causes distortion in car door speakers at high volumes. Well car speakers can sound distorted when loud because the internal amplifier inside the headunit is not powerful enough, therefore has high distortion levels. This is usually the case when you are powering aftermarket car speakers that are rated at 100 watt rms and the car stereo can only put out around 25 watts. There are a couple of things you can do to your car audio system to fix car speaker distortion at high volume levels.
Enable the high pass filter on the fronts and rears. This is an option that allows you to stop all the bass going to the car door speakers. They are not really designed for bass, due to having small cones and because of that they tend to distort more quickly. So switch on the HPF, as it will block out any bass frequencies below 80Hz and will make them sound more clearer.
Reduce the amount of bass in the settings. Having it setup to +10 bass and -5 treble is going to give you no distortion at low volume levels, but at high volumes its going to be certainly noticeable. This can have an impact on the sound quality. Reduce it in the audio settings to the lowest level since it is the best way to get clean sound. So leave the fronts and rears purely for the vocals and install an additional subwoofer in the back for bass. This will stop all bass being distorted when playing at loud volume levels both low or high.
Dont Use Bass Boosted Music Off Youtube. Bass boosted versions of songs are edited in a audio program such as Audacity with more bass. This if done unproffesionally which most of the time is the case can cause distortion in the music file. Regardless of how good your car audio system is, with low quality modified music you are going to get poor sound quality. If you want the best sound, you want to use original CDs, songs purchased from itunes or loss less formats such as FLAC.
Add a four channel amplifier. Connecting a car amplifier is the best way to go if you want the cleanest sound. This is because the amp inside all radios are small and because of this they are not designed to produce big numbers due to overheating issues. Most good branded car stereos for 2016 produce no more than 25 watts to each channel. They claim they are 50X4 but that is just used most of the time to sell the product. Purchase a good quality amp for a reasonable price, some brands to look out for are Alpine, Kenwood, JL audio, Rockford Fosgate, Infinity and JBL. When looking for the right one ensure that it can provide sufficient power that matches the specs of the speaker. For example, if the speakers in your car are rated at 150 watts max and 80 watts rms, you want a four channel amp that can output 80 watts rms or even around 100 just to ensure that extra power ouput. This way you are not underpowering your speakers and reducing the chances of distortion at high volume levels when playing loud music.
Setting the gain correctly on the amp. The gain control to most is known as a volume contol, in fact this is a untrue statement. The idea is to match the voltage that comes down the RCA cables to the input levels on the amp. Tuning the gain, is not turning it all the way up and thinking you are getting more power or something it doesn't work like that. The cheapest most effective way to setup the gain is by using your ear. Insert a CD into your stereo that you listen to on a casual basis that has some good amount of bass to it. Head back to the car amplifier, turn up the gain slightly very slowly and stop when the sound becomes muddy. You could also purchase the distortion detector tool produced by the basshead steave meade designs, really you need to check out his youtube channel its called meade916. He shows his 30,000 watt system, with four 18 inch subwoofers installed into his tahoe, he is known as the car audio genius. Its a bit expensive, but its worth it because its a tool that you can use for an unlimited amount of time. You can also tune up your friends car audio systems.
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