subwoofer question......what size sub ?


have a pair of Proac Studio 200 speakers and thinking of adding a sub....but with the drivers in the Proacs being 7", what size sub ( driver ) should be used ?     keep it close to the same size or go with a 10-12 driver ?

what brand of sub works well with Proac ?
addyson815
You don’t need the more expensive Dualcore for two subs. The 8033 will happily equalize two or even four subs, but only in mono. That, however, many would argue is the best way to connect subs anyway. See here for connection examples of the various 8033 models:
http://www.dspeaker.com/en/technology/anti-mode-technology/anti-mode-connection-examples.shtml
The Dual core will function as the sub crossover and volume control as the 8033 will not . I have both units . I use the dual core for my stereo distributed bass system .
This is good information about these two models. I'll go get the details.
Thanks,
Kenny
Vandersteen Sub 3 coming soon
advantages
• no DSP processor in your analog circuits.                                 •installs at speaker level ensures
Better transition with existing amp.

•11 band tunable with built in room
compensation deals with room peaks without over compensating 
Sealed system with proven speed.
•Works with all Vandersteen feed forward High Pass units unloading existing amp from heavy lifting 
allowing the whole system to play with better transparency and clarity.
JohnnyR

@willemj, Kenny is employing the GR Research/Rythmik OB/Dipole Sub, a very unique, untraditional bass reproducer, in a manner unlike a "normal" monopole sub. I suggested the Dual Core so that he could continue employing the subs as separate left and right stereo bass reproducers. While having multiple mono subs can provide benefits over a single pair of stereo subs, the OB/Dipole Sub was not designed nor intended to be used in that fashion. While the sub CAN be employed in the same fashion as a monopole, to do so is to squander it’s unique capabilities.