A:AnswerYou can bury it. It will last for about 5 years. Get some plastic pipe and some plumbing glue bury in the pipeline and it will last probably 20 years.
A:AnswerThese speakers are already 8 ohms, but u shouldn't need 4, they are very loud. If you do decide to hook up 4, see if your receiver is 4 ohm stable if it is it should be fine. But I have two and they are very loud.