[R_burke]

I have NO DIY skills, so I am looking for recommendations on what sub or subs to buy complete that integrate well with OB-5s. 

[KS]

http://www.rythmikaudio.com/DS12.html

Scroll down until you see the pic of the enclosure.  Add the Rythmik/GR amp & driver, and you're making music.  Put No Rez on the inside surfaces, stuff it with a pound of poly fill or fluffed-up fiberglass insulation, and you're making great music.