Jack Straw

I’m generally pleased with these, although not my first choice but many of you already know the saying “happy wife, happy life.” I say generally because the low end seems a bit thin and I’d like to know if there is anything I can do (don’t even mention a subwoofer, see above) such as an enclosure box in the wall that will give it a bit of oomph. They are running on a Cambridge Audio AXA35. Crutch field assured me it was a killer combo. Room is about 14 x19. Any suggestions? Thanks.