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
Thanks! I was hoping to spend a little less than ATC's entry sub. I'm going to a Rel dealer after work to have a listen. Anyone have any experience with them? Seems like their emphasis is on music and not home theater.
REL used to have separate models for music or home theater, not sure if they still do...I had one for music and it was excellent, and neither large nor expensive
Can you separate the amp and preamp section on the Hegel? If you can’t do that you will be wasting your money on any sub with a high pass filter option including the JL E110. You can save some cash getting the JL D110 or D108. Since you will be running your speakers full range with any sub you decide to get!
Hi, 

I went to the local Rel dealer and had a listen and it sounded great, was within my budget and like jl35 mentioned, they're not too big. so I went with the t/7i. I wasn't familiar with Rel prior to this endeavor, but the more I learned about them, the more I liked, especially their emphasis on use with hifi. 

Thanks so much to everyone here for all the help, much appreciated!