The ones (speaker screws) on my 2012 are T-15 like maniacal_rick
mentioned up above. I would imagine that they are the same for all models.
Just in case you are a bit confused as to what Torx bits are, take a look here
. If you buy a set then I suggest getting the ones that require a ratchet to use, that way you’ll be able to apply enough torque to remove the larger stubborn ones. Also but not necessary, try to buy a quality set, for instance craftsman (I have harbor freight Torx bits too). Not using a tight fitting bit that is somewhat rounded can ruin your day.
, please fill out your profile when you get a chance, it will come in handy when you post in the JK tech section, thanks.