After a power outage a couple of weeks ago took out my four SVS subs

I went on the hunt for a couple of new ones.My little Harbeths were pretty anemic sounding without a little help down below. On my budget it appeared the HSUs seemed to have a lot of flexibility to tailor the bass for my medium sized room,plus 30 days to audition.
Took delivery this morning, took all of 20 minutes to set up in the back corners and Dang!They sound just wonderful! I will not have to add two more later as I thought so yay! I left the ports sealed,set the crossover at 45 then later up to 50(sweet spot),volume at 9:00 - perfection. Tight,articulate,and textural bass on both acoustic and electric. Absolutely no fussing to get a perfect blend. I couldn't be happier. Of course I already knew what the best placement would be,plus I went through the manual online before they arrived to understand what the various settings were for.I fully expected to spend time experimenting with the ports,crossover, and volume but the settings are almost exactly the same as the SVSs.Except these two are faster,go deeper,and have a feel of effortless power.I have room treatments and don't feel the need for room correction with this two channel system. I'm not sorry at all today that I was forced into making a change.