Legacy Signature SE user for 6 years. All very good suggestions above, and they may work for you. Certainly it's too soon to judge before yours get 100+ hours of good workout. I personally can't do without LOW bass, whereas the SE's are designed with a peak at 35Hz and a sharp rolloff below that. The "22Hz" rating presupposes optimal conditions which your room is unlikely to duplicate and is down many dB at that frequency anyhow. Subs did the trick for me, and they need NOT be pricy Legacys. Although placement certainly matters, with 3-4' from front wall being optimal for me, to my ears subs were still required. Legacy recommends running the SEs full range and setting the subs accordingly. I have followed that advice with satisfactory results.
More Bass
I recently purchase a pair of Legacy Signature speakers from an on-line retailer. I purchased them unheard, but I did my due diligence in researching them and I would have thought with the 7" woofers and a rated frequency response of 22-30K hz, there would have been a bit more bass (although there is a couple of tunes I have played where there is some bass that is really deep and sounds all garbled, very weird, but I just won’t listen to those songs,I guess).
I bought floor standers so I wouldn’t have to deal with the hassle that goes along with setting up subwoofers, also with all the space they take up and the negative WAF that goes along with them.
They are a little bright on the top end, but I’ll blame that on my room, it probably needs more treating, just limited on funds at the moment.
If I thought I needed subwoofers, I'm thinking I might have bought a pair of Fritz bookshelfs and a pair of subs, for probably less than the Sigs.
The price of Legacy subs is over the top for me, so do you think there is any way to get more bass without subs or are there any subs that are a bit smaller, that might do the trick as I am pretty limited on space (and funds as previously mentioned!) Thanks