Originally Posted by Rahim_s_a
. If at all I have to buy a non-SONY receiver (from craigslist or facebook marketplace), what should I check to make sure that it is compatible with these speakers and sub-woofer?
Nothing at all.
If is a 5.1 receiver with an optical audio "in" (which most all of them have had since the 1990s) you should be good to go.
If it has HDMI that would be even better as then you'd connect the HDMI to the receiver and then from the receiver to the TV and have more surround modes available but if not Optical is just fine.
From your manual:
Digital Audio (Optical) Connection
Connecting an AV receiver to the TV via a digital audio (optical) connector lets you listen to digital
" Connecting a device using an optical cable does not automatically turn off the TV speakers. To turn off the
TV's speakers, set TV Sound Output (Sound > Speaker Settings > TV Sound Output) to something other
than TV Speaker.
" Adjust the audio device's volume using its remote control.
" An unusual noise coming from the audio device while you are using it may indicate a problem with the
audio device itself. If this occurs, ask for assistance from the audio device's manufacturer.
" Digital audio is only available with 5.1-channel broadcasts.
Refer to the diagram and connect the optical cable to the TV's digital audio output connector and the
device's digital audio input connector.