The best replacement for 5.1 speakers is 2.1.

The best alternatives to 5.1 speakers are rated as following:
★★★★★  2.1
★★★  soundbar
★★  7.1
  4.1
  2.1 speakers

Your alternative for 5.1 speakers is not listed? Suggest!
Speaking about 5.1 speakers, one probably shouldn't forget about 7.1 receiver.

Other search terms related to 5.1 speakers and their ratings are:
★★★★★ 7.1 receiver
★★★★ 7.2 receiver
You have in mind a companion for 5.1 speakers and it is not yet here? Propose!



Google Trends

Scale is based on the average worldwide traffic of 5.1 speakers in all years. Click on graph for more.
5.1 speakers
2.1
soundbar