Sub getting swallowed up
Hello, I recently purchased the polk A9's , A3's and the CSI A6 center. Pushed by an NAD 275BEE and NAD T278. The problem lies with the sub, a MartinLogan Dynamo 700W cant seem to keep up. I like my sub on all the time, 2ch etc. The A9's dont really have the lows I was fully expecting and at lower volumes the sub is ok I guess but at higher volumes it gets totally swallowed up. The bass response, for lack of a better term, is sloppy and unorganized and easily noticeable thats its trying to fit in with the cool kids but cant quite pull it off. Is there an alternative that can stay in the race with the other speakers? I changed placement, made adjustments all over the place and the results the same. The room is about 15x20. Any ideas or thoughts? Thanks in advance.