there really is no difference in this than there is for setting up speakers properly. It's all about perfect set up and using the best quality subs you can. The problem is that some folks will read what you post about how great it is and then assume they can use any sub and get great sound. This isn't how it works. You can not get an inferior sub to sound better than a great one because of this set up. You still need great sounding subs that can be set up like this.
I think it's awesome that you love your sub set up. I haven't hear the subs, but if you are getting 4 sub 1000 subs for 3k, I have to wonder if they will sound better than a pair of 1500 ea subs that are better quality (not all 1500 subs will be better quality, just making a blanket statement). My other point is that most folks I know well could never have 4 or more subs regardless of size (and size does matter big time) in their rooms. Life factors intervene as I posted above. Not debating the quality, just the cost, difficulty to set up perfectly and the ability to fit that many in their listening area (logistics). That's all. Not debating at all.
I think it's awesome that you love your sub set up. I haven't hear the subs, but if you are getting 4 sub 1000 subs for 3k, I have to wonder if they will sound better than a pair of 1500 ea subs that are better quality (not all 1500 subs will be better quality, just making a blanket statement). My other point is that most folks I know well could never have 4 or more subs regardless of size (and size does matter big time) in their rooms. Life factors intervene as I posted above. Not debating the quality, just the cost, difficulty to set up perfectly and the ability to fit that many in their listening area (logistics). That's all. Not debating at all.