Originally Posted by FattyMcFatFatFatty
I agree with cel4145's suggestion to go with an SVS sub if you can find room in your budget. SVS subs are an excellent value. I'd love to have an SVS SB13-Ultra myself.
Currently, I'm using a Hsu Research STF-2 10" Powered Subwoofer (200 Watts RMS) paired with a set of Mini Maggies in my small 10'x9' office. The STF-2 is a good match with the Mini and provides just enough bottom to be satisfying in my room. I don't know where the MMG rolls off in your environment so I can't be certain about how seamless the STF-2 will be for you, but I have mine crossed over at 80Hz it blends well with the Mini.
Here's a link to my Mini Maggie review where I mention the HSU sub - http://www.head-fi.org/products/magnepan-mini-maggie-desktop-speaker-system/reviews/8105. If you have a larger space you'd likely need something bigger. If you don't mind waiting for a used STF-2 to pop up, you can probably find one that will fit your budget. In the mean time, you can always save for an SVS.
Edited by jazzfan - 3/6/14 at 8:37pm