You have a killer amp there, it can push almost anything going. I would say look into to some transmission line speakers or even sealed. IMHO with high power amps transmission line does very tight and deep bass without messing everything else up.
Maybe PMC speakers, probably want to stay away from anthing thing too analytical do to so so quality of most recorded reggae. Legacy audio might be something to look into, very love / hate brand though. If you have the cash PBN speakers are another one, but you have to get up in their range to get the 25hz bass.
Don't forget room treatment...real traps or Gik acoustics...huge improvement for me with corner bass traps.
Black sounds of freedom by Uhuru spinning now.
