Most of us criticising their sub, have never heard it or seen measurements
But 10" sub is not really a great idea for most larger rooms if you want deep movie bass and high output - IMO. I'm sure the EMP 10i is a good sub for music.
The dual 10" sub has around the same surface area of a 13.5" driver. If it's linear throw and tuning work out, it should be a potent sub that more closely competes with internet direct stuff.