So, apparently my 2012 Civic Si has a subwoofer or at least my audio settings state so. However, I don't notice an increase/decrease when adjusting the setting. From other forums I've read, posters have complained of a weak, "disappointing" woofer, but I'm not entirely sure mine is working properly. I plan to get into the dealer for diagnosis soon. But, if this is as good as it gets, I'm going to want to add a subwoofer to the mix. Is there any way to do this by tying into the factory setup? I'm not too tech-savvy and would prefer to keep my factory system with the subwoofer setting if possible. Thoughts and advise are welcome. Thanks!