The best replacement for active sub is passive sub.

The best alternatives to active sub are rated as following:
★★★★★  passive sub
★  passive

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

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



Google Trends

Scale is based on the average worldwide traffic of active sub in all years. Click on graph for more.
active sub
passive sub
passive