And how many people....
If your seat is in a good spot and the only seat that matters the towers may be enough.
Only one of my subs is more capable than my towers (until co-located) but I've noticed improvements in overall SQ while losing certain qualities when compared to or using 2/3/4 subs.
I still run full range without subs more often than not. Most satellite, PS4 and late late night movies are without subs and I'm quite happy.
When we're watching new releases or concerts subs are on and towers crossed over at 80.
