By the way, have you ever played around with DSP?
@navyachts not so much in my main system. I've played around with it in my car and have experimented with it in Roon, but it usually ends up sounding not quite right. I've also experimented with the DSP functions in the Parks Puffin. None of it is really to my liking.
I have a friend that uses a Trinnov processor as a preamp for his system and it sounds quite nice, so I do believe it can work well and be a useful tool.
As far as cables, I tend to use higher end stuff for most of my cabling, but for subwoofers, BJC should be fine. I think I have a couple of their cables in use with my subs.
I like that the newer SVS subs provide the app and DSP to help you tune them, that could be very useful. If you can get the subs in opposite corners of the room, that is often best, but work with what your room gives you and experiment with placement. They might sound fine at the front of your room. Every room is different and you won't know until you try. If you're using single-ended or balanced cables, you only need one cable for each sub.