Why Are Coaxial Speakers Used for Car Rear Doors?
3 Answers
Car rear doors are equipped with coaxial speakers because they can save the need for an additional tweeter. A coaxial speaker is a type of speaker that combines both tweeter and woofer functions, featuring two speakers mounted on the same axis—one responsible for reproducing high frequencies and the other for mid-low frequencies. Additionally, the diaphragms of these two speakers must overlap. Due to their physical positioning being nearly at the same point, they effectively resolve phase deviation issues. Extension: Speakers serve as the audio signaling devices in cars. During driving, the driver can emit necessary sound signals as required or mandated to warn pedestrians and alert other vehicles, ensuring traffic safety. They are also used for urging movement and transmitting signals.
Coaxial speakers are quite commonly used in car rear doors, mainly because the rear door space is relatively small, making it convenient to fit a single speaker in. The coaxial design integrates the tweeter and woofer into one unit, which doesn't take up much depth inside the door and makes installation easier. When the car is in motion and vibrating, this integrated structure helps reduce component loosening issues and extends lifespan. Additionally, from a sound perspective, it emits sound from a single point, providing more uniform audio for rear passengers compared to separate tweeters and woofers that may cause interference. This creates a more balanced overall car audio system while saving manufacturers costs with fewer parts and assembly steps. This design allows rear passengers to enjoy background music without distracting the driver, and daily maintenance is simpler, making tasks like replacing bulbs more straightforward.
As a long-time car enthusiast, I've driven several vehicles equipped with coaxial speakers. The music experience genuinely improves with this design implemented in the rear doors. Due to spatial constraints when closing the doors, the compact coaxial speakers don't get in the way while delivering consistent sound from the rear, creating a natural and comfortable listening experience. Especially during long trips, rear passengers complain less, and the overall ambiance resembles a small theater. The cost is low but the effect is remarkable, making it a favorite among manufacturers due to simplified production lines. Maintenance is also easy for us owners—just replacing a single speaker does the trick, avoiding the hassle of frequent component repairs.
