Do I need a sub woofer to match my ATC SCM11s


Hi,
I love my speakers (ATC SCM 11s), but am wondering if adding a sub woofer would better my experience? The speakers are on stands being driven by a Hegel H160. Any suggestions/tips to further enhance my system would be greatly appreciated. 


jeres8860
JL E110 will do the job and it will certainly enhance your experience. I would not go with anything ported or low cost as it simply will ruin the bass response and lower mid range of your speaker.
Thanks for the suggestion. Has to be that big and expensive? Does it make more sense to sell the ATCs and get floor standing speakers? Any suggestions of good speakers that work well with the Hegel H160? I'm look for a wider and deeper soundstage. Right now it sounds too thin to me, if that makes sense?  I'm open to either solution. 
JL D108 would be another option. Unfortunately great subwoofers aren’t cheap.