Standard car for the time ni still much in the eye of view, therefore, now standard on many cars changed little with the added sound system. for view our first stage to up grade Head Unit (HU), especially on cars in 2000 down are not equipped with CD player. In addition to replacing the HU, we can also utilize the standard HU by adding a CD Changer, the advantages of this tool can accommodate more than HU Single Disc CD usual. To have more budget, we could also buy a HU that already features the USB / MMC, or who have Ipod Ready.
In the next stage, we can replace the standard speakers are usually congenital car-type coaxial with the SPLIT. The difference with coaxial, speaker SPLIT equipped with a tweeter and passive crossover, so the vocal sounds produced more leverage.
To further enhance the existing sound, try to replace the standard audio cable with a larger, namely the size of 16 AWG. Of course this will maximize the distribution of power from the HU to the existing speaker device. To minimize the more funds we replace Baek a suitable audio device speakers that already exists in the default car.