Personally, as someone who's messed with these beasts a lot on audio, just drill a whole. Keep some silicone sealant handy, and when everything's in place, seal it off. 5 min of work as opposed to 20 or more through ducting, and if you ever need to work with the ducting, you're having to cut, or pull out wires.


God graced us with intelligence, let's use it.