The best replacement for powered subwoofer is passive.

The best alternatives to powered subwoofer are rated as following:
★★★★★  passive
★★★★  non powered
★★★  passive subwoofer
★★  non powered subwoofer
★★  subwoofer
★★  active subwoofer
★  powered subwoofer
★  unpowered
  non-powered

Your alternative for powered subwoofer is not listed? Suggest!
Speaking about powered subwoofer, one probably shouldn't forget about passive speakers.

Other search terms related to powered subwoofer and their ratings are:
★★★★★ passive speakers
You have in mind a companion for powered subwoofer and it is not yet here? Propose!



Google Trends

Scale is based on the average worldwide traffic of powered subwoofer in all years. Click on graph for more.
powered subwoofer
passive
non powered