Here are some key benefits of using passive radiators in a sound system:
Increased bass output
- Passive radiators resonate sympathetically with the driver, reinforcing low frequencies and allowing smaller enclosures to produce deeper bass[1][2].
Lower distortion
- Passive radiators can reduce harmonic distortion compared to reflex ports, resulting in accurate and clean bass[1][3].
Compact size
- Passive radiators allow smaller box sizes by enhancing low frequency output without requiring large ports or chambers[2][4].
No port noise
- Unlike reflex ports, passive radiators don’t produce port turbulence noise or “chuffing” at high output levels[1][3].
Durable
- Passive radiators have no voice coil or magnet to blow out, making them very rugged and resistant to overdrive damage[2][4].
Efficient
- Properly tuned passive radiator systems can be more efficient than sealed or ported enclosures[1][5].
Drawbacks
- Passive radiators aren’t as loud and may have slower transient response compared to ported designs[3][5].
Conclusion
- Passive radiators elegantly boost bass output from compact enclosures with low distortion. They trade off some efficiency and transient response for great bass in small packages[1][4].
Citations:
[1] https://www.avu.ca/audio/what-are-passive-radiators-in-speakers/
[2] https://integraudio.com/what-are-the-advantages-of-passive-radiator-design/
[3] https://blog.miscospeakers.com/benefits-of-a-passive-radiator-speaker-enclosure
[4] https://audiosciencereview.com/forum/index.php
[5] https://www.hifireport.com/passive-radiators-101-a-beginners-guide-to-audio-technology/
[6] https://youtube.com/watch?v=p2Fi7yNByfU