From my previous post I mentioned the use of stand mounts with a sub(s) and added that bass management is also important. Stand mount speakers come with many features and in many price ranges. Some can rival the performance of some towers. The "deep" bass would probably elude most. That's where bass management comes in when using stand mounts with subs.
A stand mount speaker is capable of delivering sound in a range of frequencies. The lower frequency (bass) of those speakers have a certain limit. Below that frequency is where the sub(s) come in. Relieving the frequencies below the capability of the mains makes the mains (stand mounts) better at delivering their best performance. Bass management can be achieved different ways...whether built into the amp, HT amps, DSP, active crossovers, and others. The best performance of stand mounts and subs must take this into account.