Sony HT-A3000 Operating Instructions Manual page 9

Network
Wireless LAN router
"What You Can Do by Connecting the Speaker System to a Network"
(page 31)
For the connecting method to the network and functions enabled
with the network connection, refer to Help Guide (Web manual).
For customers in Americas
https://rd1.sony.net/help/ht/a3000/h_uc/
For customers in other countries/regions
https://rd1.sony.net/help/ht/a3000/h_zz/
Optional speakers
Optional rear
speakers
For the operations of the optional rear speakers and subwoofer,
refer to their operating instructions.
For the supported optional speakers, confirm on the Sony website.
Internet
Optional subwoofer
9
US