A:Answer Hello NYWestGuy,
Yes, to fully enjoy theater-like multi-channel surround sound, you need five speakers (two front
speakers, a center speaker, and two surround speakers) and a subwoofer. You can find more information on page 17 from this link below.
https://www.sony.com/electronics/support/res/manuals/4726/890436b47fd2ffcc4003f34dc5f2592c/47269051M.pdf
Happy to help,
David