Fi btl 15" alternator question

[deckam88]

Looking for some help on the big 3. My sub is a fi btl n2 15" fully loaded with a hifonics brutus brz2400.1d subwoofer is in a box I built at 4.8cu and tuned to 34Hz. I ran 0gauge to a stinger spp1200 no capacitor oh and it is in a Nissan Titan getting the sub this Saturday taking forever to come in but everything is installed and ready does anyone think I would need a HO alternator maybe around 250 amps? And what you guys think would be the max rms I can throw at it in that box or maybe rebuild a different box thanks

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[jaeguerra909 10+ year member]

It's all ways a good idea to do an alt if not just do a batt or two