What subwoofer would you guys recommend to go with Behringer B2031A???
Thanks for the response in advance...

Does Behringer make a sub for them? If they do, I would go with that, as their crossover points would work together.

http://www.behringer.com/EN/Products/B2031A.aspx
 
If you look at the back there looks like there is a hi pass switch to filter out low end and it says "for use with a sub". So that means any sub will work. 

Check out the M-Audio SBX-10. Not exactly what you'd call "high-end", but it's plenty good enough and considerably less expensive than most. It has its own crossover, so will work with any main speakers. I've had its predecessor, the BX-10, for 7 or 8 years now and it works great with my ADAMs. 

Thanks for the input guys, sorry I'm late getting back, issues!!!

Sometimes real life gets in the way of the important things, such as shopping for a subwoofer.

I'm a government worker, so now I have a lot of time on my hands...Hey! maybe I can shop for a subwoofer!!!!!

Good luck to you.  

Thank you, Old55..

I simply bought a Polk audio 10" 100w sub for around $250 IIRC..... it works great and adds that punch on the bottom.