Hi
I think the HTS 10 or HTS 12 will be good and better performers than the existing sub you have.
Subs have to be kept at 50% volume....depending on how much area / room size to be covered, you need to get a decent sub.....no point keeping the sub at 75% or more volume which will lead to muddy or jarring sound.
You can audition the SW100 which supposedly performs as good as SW300 .......the SW100 goes as low as 25hz and not 20hz as the SW300....keep this in mind...i am sure it will sound much refined than the Polk sub you already have.
You can also refer to Youtube videos to get some idea of subs demo if you cant audition them in person....its not an absolute audition but a reference
I think the HTS 10 or HTS 12 will be good and better performers than the existing sub you have.
Subs have to be kept at 50% volume....depending on how much area / room size to be covered, you need to get a decent sub.....no point keeping the sub at 75% or more volume which will lead to muddy or jarring sound.
You can audition the SW100 which supposedly performs as good as SW300 .......the SW100 goes as low as 25hz and not 20hz as the SW300....keep this in mind...i am sure it will sound much refined than the Polk sub you already have.
You can also refer to Youtube videos to get some idea of subs demo if you cant audition them in person....its not an absolute audition but a reference