They will absolutely destroy the wharfedale subwoofer.
the subsonic xs2 has a freq response of 25-150 hz
the wharfedale cuts of at 32
the xs1 drops to 22
the xs3 drops to 29
the xs1 weights 34 kgs
the xs2 is 150 watts @ 4 ohms
the xs1 is 250 watts @4 ohms
the ML series of subsonic arent in production anymore.
In my opinion, the xs2 or xs3 would be your best bet.
The xs2 its self would be overkill with your aktimates.
Ive auditioned all these subwoofers and theyre all great subwoofers. The xs3 its self drops ridiciously low for something with 2 6.5" drivers. Just try and get them from audio trends as the xs3 are only available at audio trends due to the end of the production line.
for a review from springwood hi fi.
The old designer of richter acoustics is the owner of subsonic.
Now the difference between the freq response of the subsonic subs and other subs is that mos of the other subs in that price range drop to 25 or so but thats +- 6db.
The xs1 xs2 xs3 are all +- 3 db.
So therefore the lower notes are heard (and also felt).
the xs1 also has a large magnet, it has 2 ferrite rings in it for a better magnetic field thus the reason its so efficiant.
The subwoofer really performs in the low 30s and 20s.
And i dont think ive ever heard it distort (im a dubstep fan myself)
You will hear every deep bass note in your dubstep music.