Home Theater Questions? Ask a Technician for Answers ASAP
Hi and welcome to the site, I’m Louie. Sorry you had to wait awhile but I’ll do my best to help.
Initially, bear with us; re-confirm and post back with the complete model number of the sub woofer. Additionally, please describe how the subwoofer is connected to the Pioneer using what kind of cable(s).
Still, consider / try a RESET.
Additionally and better yet, run the MCACC.