Best multi-purpose subwoofer


Best multi-purpose subwoofer - meaning it fulfills my pursuit for audiophile 2 channel listening and my home theater needs. I have a large TV room 22x22x8 (LxDxH) with floor standing Von Schweikerts VR4 speakers. Room is used both for dedicated 2 channel listening as well as home theater. Unfortunately the design of the room is not the best as it has glass on one side (leading to the backyard) and laundry room behind (meaning its also the family room). Currently I have a 8 inch NHT SW1 old subwoofer which needs an upgrade. The maximum dimensions I can afford on a subwoofer is  15x18x20 (LxDxH). 
As mentioned I want to be able to connect a High Level Input (for 2 channel) and .LFE for HT - so the subwoofer will need to have both. Grace for dedicated listening as well as power for HT. The only time I would consider a larger subwoofer is if it has wireless capabilities so I can place it anywhere in the room. 
Any suggestions on which subwoofer may work best for me? 
128x128ghulamr
I have a pair of REL t7i and it’s awesome. They have high input and LFE. They just become an extension of your two channel system, and they rock in HT
@noble100

Wouldn’t it be easier to just get 2 subs and run room correction than go 4 subs?

Saying an infinite number of subs would eliminate room modes is like saying having an infinite line source would eliminate the problem of a limited sweet spot. It doesn't seem to be rocket science.
The flagship HSU can be tailored to whatever your particular needs may be. If you want it to blend perfectly to your setup or if you want it to be the star of the show,it has you covered.

$1,000 shipped.
By a used REL...I have 2 and they're amazing, and they do "pressurize" the room in the sense that having ambient low frequency sound around makes things more life like...at least that's what I think that means...it makes the room feel better.