Define "good". I don't think I've ever seen a single sub response without noticeable nulls
Right. So a null, by definition, is in a specific place. If you only have one seating position, and you’ve ensured you’ve moved your sub so it’s not in a null…
I’ve spent a few days reading up, watching videos, trying to sort the wheat from the chaff, etc.
And pretty much all the advantages of a second sub appear to…erm…disappear if you’ve placed your sub where it doesn’t create a null or peak at your seating position.
There’s extra volume, but that doesn’t apply to me - I’m not going to get close to maxing out - and this is music, not films.
Less localisation with two subs, but this applies less to 2.1 than 5.1, and less still if your sub is placed centrally, between your mains (where almost all bass is placed in the mix anyway).
I’m posting here as I fear there may be a flaw in my logic, but so far I’ve seen a lot of great science in my reading, and none of it says I need two subs, given my set up.
But obviously, this being ASR, I’m waiting for more science.