Sony SRS-HG10 Help Manual page 128

By grouping speakers, you can fill your rooms with same music simultaneously.
For music stored on a PC or NAS, you can also listen to different songs from each speaker.
You can set and save one favorite speaker group.
For more details on the Wireless Multi-room function (such as grouping and group playback), refer to the following URL.
http://www.sony.net/smcqa/
Enjoy even greater surround sound with additional speakers compatible with wireless surround function.
For more details, see "Using this speaker as a rear speaker (Wireless
Pair two speakers together to create wider, stereo sound.
For more details, see "Connecting two speakers (Wireless
* It is not recommended watching video by connecting a TV or game machine with Wireless Stereo function.
Related Topic
Using this speaker as a rear speaker (Wireless Surround)
Connecting two speakers (Wireless Stereo)
Stereo)."
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Surround)."