MartinLogan - BalancedForce Dual 10" Powered Subwoofer - High-gloss black/cherrywood

I bought a pair of these for use in a dual purpose HT/two channel audio system. They are running master/slave. I also got the PBK kit to tune them to the room. You need two of these kits if you’re running the subs in left and right mode, but if you daisychain them it requires only one. My room is 15 foot wide by 30 foot deep. After about a 60 hour break in period i was amazed.  I also auditioned the SVS ultra 16 which was another amazing sub pair, if I was going for pure SPL and ultra low extension for movies only I would’ve chosen them.  The Logans have enough power to completely pressurize my room, and when required they can go very deep. The specifications say it can play down to 20 Hz and in my room they do that. The winning attribute for the Logans was the pitch, definition, and insane quickness. It’s possibly the most musical and fast transitioning subwoofer I’ve ever heard. There is a huge difference between loud powerful bass and perfectly articulate bass. It can transition between a 25hz thunderclap to a 60-80hz drum with insane speed and realism. When properly tuned the subwoofers completely disappear in the room. Low bass seems like it emanates from everywhere, and drums sound like they hover in between the front speakers. The only thing to take into account with these aside from their price point is room placement. You definitely have to get them in just the right spot to have them sound perfect. The Pbk kit can help but placing the subwoofers correctly is important for these guys. I have them paired with Bowers 702S2 being run by a Mcintosh amp. They blend perfectly. I highly recommend these, or if you want a little more extension and a little more SPL and have the room the 12 inch version of these are a noticeable step up. Hope this helps