A:Answer Hello, Robbie.
We're sorry to hear that the bass from your system isn't meeting your expectations. While the SoundTouch 300 soundbar will sync with your SA-5 and play audio alongside the 791 speakers, you would experience a noticeable audio-visual delay when watching TV. We always want to make sure your enjoyment of the system is up to Bose standards of quality.
Due to the in-depth nature of your home theater setup, we would recommend speaking with our tech support specialists directly for the best assistance. Please reach out to our team at 1-800-608-2673. They are available M-F 9 AM to 9 PM Eastern, and this group will be glad to help.
Thank you, and have a great day! Jesse - Bose Support