I have a Pioneer A4 Airplay speaker connected by WiFi to a Technicolor TG582n router. After playing around with configuration settings as described on npr.me.uk I managed to disconnect the A4 speaker from the WiFi network.

So I decided to experiment with different combinations of settings to see if I could find which work.

• STBC – with this enabled, the connection does work – initially I thought it didn’t but was able to get it working with the A4 next to the router.
• CDD – with this enabled, the connection does work.  This provides better coverage, so worth using.
• AMSDU – with this enabled the connection does work.
• SGI – with this enabled the connection does work.

After systematically turning each thing on at a time, I found all the settings work after all, so it must have been something else that stopped the connection.  At least I now know.

I don’t think I benefit at all by using any of these settings for listening to music, but in theory they should improve performance for other wifi clients such as laptops and smartphones.  A good discussion of most of the techniques enabled by the functions can be found at Veriwave.