I bought a Martin Logan Dynamo subwoofer (sealed design) recently because I thought that it would be a very musical sub. I did my best to integrate it with my speakers (Quad 12L2). I spent a lot of time on that until I thought I had it set up just right. Then I decided to try it with the subwoofer off...it was much better! The Quads put out lots of bass for their size and a little bit of corner reinforcement and it just sounds a lot more integrated than I could ever manage to get when using a sub. So I am totally off of subwoofers now.
With all that said, I was a little limited in where I could place the sub. Perhaps there is a way it could have sounded better. But I don't believe you can improve the integration of bass, midrange, and treble by adding another speaker to the mix. It only introduces new variables and new issues to deal with. In all liklihood it will sound worse, if you are lucky and/or know what you are doing it may sound just as good with a bit more added low end.
I will be moving to a bookshelf speaker with a 7 or 8 inch driver in the near future, to get something with the integration I am looking for and a bit more bass weight and sense of scale.
With all that said, I was a little limited in where I could place the sub. Perhaps there is a way it could have sounded better. But I don't believe you can improve the integration of bass, midrange, and treble by adding another speaker to the mix. It only introduces new variables and new issues to deal with. In all liklihood it will sound worse, if you are lucky and/or know what you are doing it may sound just as good with a bit more added low end.
I will be moving to a bookshelf speaker with a 7 or 8 inch driver in the near future, to get something with the integration I am looking for and a bit more bass weight and sense of scale.