alpine type-r subs?

I noticed on another thread in this forum you guys said Audiobahn subs could fry when pushing out their max RMS power rating. I’m going to be getting an Alpine Type-R 12" for my teg and was planning on feeding it its max RMS ating, but i wont if it will overheat. If anyone has had experience w/ Alpine subs overheating please let me know. Also, which type of enclosure will make the sub sound best playing alternative/metal music, sealed or ported? Thanks for the help.