A:Answer Hi Albert, We're sorry to hear you're having a low subwoofer sound issue with your unit. If the input sources contain very little bass sound components (i.e., a TV broadcast), the sound from the
subwoofer may be difficult to hear. To ensure optimal sound and bass performance, set the night mode to off. https://www.sony.com/electronics/support/res/manuals/4748/e34a75abf7aac4f23b7cd29347800824/47487571M.pdf (page 22).
Also, to ensure optimal audio performance when listening to TV and movie content, we recommend the Cinema Mode. We recommend Music mode if you are listening to music. Hope this helps! -Sam