sound system for ford car audio upgrade

1.These three version for upgrade car audio
A.version 2.1 Configuration：loudspeaker*2, a subwoofer, a main engine.Dual speakers and subwoofer design
B.version 4.1 Configuration：DSP drives 4 door speakers of the car, 1 subwoofer ,1 control box.Computer and APP tuning
C.version 5.1 Configuration：One Set Of Dedicated Non-destructive Wire,One Diamond Surround Mid-range Speaker,Dedicated Subwoofer for Special Vehicle,Control box
2.Specialized solutions for cars
3.Feel the layered and penetrating power of the human voice, enjoy the live stage feeling
4.Panoramic surround, enjoy the sense of space wrapped around the ear
5.hansshow car stereo speakers supplier