There are a few things you can do to optimize the sound of your car speakers:

1. Position the speakers properly: The position of your speakers can have a big impact on sound quality. Try to place them at ear level, pointed towards the listener.
2. Use sound-deadening material: Adding sound-deadening material to your car’s doors and trunk can help reduce vibrations and improve sound quality.
3. Use equalization (EQ) to fine-tune the sound: Most modern car stereos come with an EQ setting that allows you to adjust the balance of frequencies coming through the speakers. Experiment with the EQ settings to find the sound that you like best.
4. Use an amplifier: If your car’s factory stereo doesn’t have enough power to drive your speakers, you might want to consider adding an amplifier. This can help improve the clarity and overall sound quality of your system.
5. Consider upgrading your speakers: If you’re not satisfied with the sound quality of your current speakers, you might want to consider upgrading to a higher-quality set. Just be sure to match the power and impedance ratings of the new speakers to your car’s stereo.