It is recommended to install a power amplifier to replace the high-grade speakers.

The sound source of MP3 is definitely not good, because it needs to be compressed, and then the sound quality is already bad after the navigation has read it many times. The disc cannot be checked much, but it will be better if it is scanned directly by the optical head. Some.

Nowadays, DVD navigation consoles have many functions, but poor sound quality is a common problem. This is the case with many DVD car navigation systems. The only ones that are better are Feige, Ohua, and Huayang. Other brands have poor sound quality. no.

Extended information:

1. Vehicle navigation

Vehicle navigation is carried out through vehicle GPS (Global Positioning System) and electronic maps. It can conveniently and accurately tell drivers the shortest or fastest route to their destination, making it a good helper for drivers.

2. Reception

GPS systems work by analyzing signals received from geostationary satellites. These signals are projected onto a vertical plane and can be viewed as an inverted funnel. When the lower half of the funnel overlaps, the GPS parser can calculate the car's coordinates.

A gyroscope-like device used for navigation in airplanes or ships that continuously provides the car's position as it moves. But when the satellite signal goes down, data from the speedometer is used to fill in the gaps and record travel times.

3. Signal processing

The signal received by the GPS and the information provided by the speedometer enter the car's navigation system through the receiver, are analyzed and processed by the software system, and stored in the Overlay on the map.

4. Voice navigation

Use voice to provide the driver with driving information such as road turns and navigation system status in advance, just like a road guide telling you how to drive to your destination. One of the most important functions of navigation is that you can reach your destination safely through voice prompts without looking at the operating terminal.

5. Image navigation

The operation terminal will display a map, as well as the vehicle's current location, driving speed, distance to the destination, planning route prompts, and intersection turning prompt driving information.

6. Planned trip

When you do not follow the planned route, or go to the wrong intersection, the GPS navigation system will redirect you to a route based on your current location. New route to destination.