15 usb

i saw on this topic on speakerplans that the 18tbx100 is suitable, [Vous devez être inscrit et connecté pour voir ce lien] and standing on the ts parameters the 15tbx should be work too but is a 15 driver, can i resize only the hole to make it work properly or i should resize all the cabinet?
i have 4 15tbx100 sitting there and i want to use them inside kickbins instead of reflex

You can try downsize cabinet, but it's not guarantee. Il t will work better on a proper cabinet design.