【 Weak current College 】 why car audio than home audio expensive?---Power By 【 China power house network 】

The main reason is because car audio environment than home audio usage conditions. Interior space of diffraction limited, Sonic, temperature, exhaust fumes, dust, and shock these factors require car audio intrinsically superior quality to resist these environmental aspects are insufficient to enable car audio in different environments are working properly.

Overall volume limit

Car audio volume due to car dashboard area, so the smaller volume. The European vehicle type according to DIN standards requirements (l) 183 mm (high) 50 mm (deep) 153 (mm). Japan automotive multimeter 2-DIN double form, size (length) 180 mm (high), 100 mm (deep) 153 (mm). In a limited volume of, car audio and more using high-density SMD components, the use of multi-layer stereo Assembly structure, in technical design requirements are high, the cost is increased.

Environment of poor

Anti-vibration vehicle traveling in different levels of pavement, make car audio frequently subjected to vibration and shock, so car audio must be structurally to have seismic performance. Therefore many automobile tape playback section adopts horizontal placement, upper and lower fastening ensures stable playback; CD part using multi-stage vibration reduction measures (La spring and damping airbags, ESP electronic anti-vibration system, etc.); parts welding Assembly requires absolutely firm and individual components more fixed with super glue.

Strong anti-interference ability

As the car engine ignition device and various auto electric share a storage battery, it will pass the power cables and other wire interference to sound. Car audio-jamming technology respectively on the power cord of the interference with choke series in power and audio filtering between, on the space radiation interference shielding metal shell seals and sound interference in specialized installation to reduce of IC outside noise interference.

To sum up, according to car audio characteristics, circuit complexity, the particularity of the material, not difficult to find out why car audio more expensive than home audio.