The best replacement for sub is dub.

The best alternatives to sub are rated as following:
★★★★★  dub
★★★★  function
★★★  unsub loans
★★  hoagie
★★  function vba
★  inkjet
★  dub anime
★  unsub
★  dom
★  gsub
★  grinder
★  unsub loan
★  private sub
★  12 sub
★  2 subs
  sub
  srt
  function vbscript
  function vb.net
  gmt
  combat
  function excel vba
  hero
  mut
  function vb
  12 inch sub
  2
  15 inch sub
  function excel
  bottom
  4 ohm sub
  12

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

Other search terms related to sub and their ratings are:
★★★★★ amp
★★★★ built in amp
★★ idx
★ enclosure
★ an amp
★ avi
s2
ns 10
You have in mind a companion for sub and it is not yet here? Propose!



Google Trends

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