2 totally different subs for different purposes. The v2w is the sub, the 2wq is a add on to the speakers to tighen the bass and make it deeper.
A sub will cause the rummble and effects in a move that is the v2w that is what you want. If you don't have a sub get this, you would/should not use it for 2 channel music.
If you wanted tigher bass and to take some of the bass away from you mains allowing your amps to run just the highs you would go with the 2wq. The 2wq is a worthwile addition it really tighens the bass and makes it deeper.
A sub will cause the rummble and effects in a move that is the v2w that is what you want. If you don't have a sub get this, you would/should not use it for 2 channel music.
If you wanted tigher bass and to take some of the bass away from you mains allowing your amps to run just the highs you would go with the 2wq. The 2wq is a worthwile addition it really tighens the bass and makes it deeper.