FrSky Taranis X9D Speaker extension (Version 2)
A speaker extension to fit a 3.6cm Speaker into your Taranis. The optional cup can go on the back of the Speaker to redirect sound to the front.
Depending on the thickness of your Speaker, you need to choose the right "adapter". The "Thin" versions is made for speakers with a thinkness of 2.5mm, while the "Thick" version supports speakers up to 5.5mm.