2013 Accord Sport
#4
Thanks for the welcome. I'd spend maybe $500 to upgrade. A little more, if necessary. The stereo just has no bass. I've asked the dealer if they can upgrade the stereo and they said no, so my next plan is to go to a car stereo dealer and see what they recommend.
#6
for the car dealership to tell you that the audio can not be upgraded is sad to say the least. It either means they are stupid or they are lieing to you. I can be done and should be fairly easy if all you are wanting is some more bass.
#7
you need to disconnect ANC to add a sub anyway so start there. the ANC system cannot differentiate very well between stereo and exterior noise. in general ANC systems in any application are flawed.