Features: This passive radiator significantly enhances bass depth and volumes while improving power handling to reduce distortion, outperforming traditional bass ports with not wind noise for superior sound performances. Constructed with a strong iron frame and composite foam diaphragm, it offer flexible design, moisture resistance, and dust defense to secure stable and distortion easy bass enhancement in any speakers setup. Ideal for audiophiles, speakers builders, and music enthusiasts seeking to upgrade their sound systems with bass components for a richer listening experience. Perfect for home theaters, car sound installations, and portable speakers where deeping , clear bass is essential for immersive sound without any unwanted noise interferences. Balancing cost and performances, this passive radiator delivers outstanding sound quality at an prices , making it a versatile and essential sound accessory for any bass focused project. Specifications: Component : Iron basin frame + composite foam shaking plate Size: 5inch/6.5inch/8inch(optional) Package Includes: 1xPassive Radiator note: 1.Please allow 1-2cm errors due to manual measurement, make sure that you do not mind before you order. 2.Due to the difference between different monitors, the picture may not reflect the actual color of the item.