4 inch Speaker Bass Radiator Flat Vibration Plate for bluetooth audio Diy Good Quality

1. This is a bass radiator vibration plate, not a speaker unit, mainly used for speakers to enhance bass.2. The Bluetooth box must be a closed box to be effective, suitable for 3-4 inch speakersDescription:Product name: 4 inch bass radiatorSpeaker Outer diameter: 100*92mmSuitable For home audio diyType: built-inOpening hole:83*83mm Package included:1pc speaker bass radiator