The diameter is 74mm, and the opening of the speaker is 64mm, which needs to be fixed with glue

The original diaphragm radiator of JBL shock wave series is equipped with metal plate counterweight. Suitable for 2.5-4-inch speakers

Brief description: the subwoofer radiator, also known as passive loudspeaker, is used to replace the inverted tube. Compared with the traditional inverted subwoofer, the subwoofer made of radiator has the following advantages. The low-frequency diving depth is equivalent to the inverted subwoofer, but the speed sense is obviously faster than the inverted subwoofer, which has the advantage of a certain closed box, At the same time, it completely eliminates one disadvantage of the inverted structure - the wind noise caused by the inverted nozzle. Therefore, friends who like to dive deep but have high requirements for bass speed use the radiant basin to make subwoofer and Bluetooth speaker, which is a very good choice