i have a rlp 15 in a 3.5 cube box tunned at 37 with 50.25 square inches of port area. how much power can i throw at it?

any advice is appreciated

1kW

1kw sounds good to me also.

k kool i have a p1000.1bd and a kinetic 1400 sitting right next to it in the trunk.

37Hz tune........YUCK for an RL-P. It's not an SPL sub, so tune it lower....

As stated above 1000 is plenty, heck it does not need it. But I agree, if you can tune lower. My 12 does well at 27hz.

what about 32 hz

i wouldnt mind it a bit high simply to keep it loud still

my last box was at 35hz and it sounded great just too small and not enough port area

32hz is fine, honestly 27 is really too low for in cabin for most needs.