Comparison of various subwoofers for 2 channel audio

@mofojo 

Since my first pair is balanced force 12” subs, I was leaning towards the Rythmik G22, which is also a 12” balanced force sub.  I’ve heard many say that they mix and match subs without any untoward effect.  I’m almost more curious to pair with a different brand to either validate or determine if my experience is different.

@gemoody 

The crossover would be quite dependent on your own speakers.  I have full range electrostats, and currently prefer the LPF set at 55 Hz, although I’ve tried everything from 25 to 55.  I do keep the volume rather low, set at 35% of max volume, but I suppose that’s highly dependent on size of the sub, how many subs, and size of room, amongst many other variables.

I’m using a pair of Rythmik subs, F12SE-XLR3 and A370XLR3 amp with Magnepan 3.7i. I use an analog crossover at 60Hz. I started with one and it made a huge difference. A second sub was even better. They give the music a texture and a weight that was simply missing before. 

I have two rythmik F12. One is by the right speaker, the other in the middle of the left sidewall. The time delay of the F12 allows for such placement.

I have two REL SHO subwoofers.  I located them in the left and right corners behind the front speakers.  I decided to go with REL’s because of the high level connection.  The hook up to the left and right speaker channels and play the woofers to extend the bass smoothly.  I am playing them at 40% volume.  I  do not like the sound of boomy bass.  They sound natural and just fill in the bass.

My local dealer recommended a Velodyne sub, sealed box, servo controlled.  So I am on my second one, the DD-12.  I really like it and it fills out the bottom end for my Maggie 3.7's.  Those are all respected brands you are thinking about.  Get one that has room correction that you can override.  Then spend time listening and tweaking.