i bought subwoofer klang 1 (ex- subwoofer 300) to connect with my Loewe individual Slim Frame 55" (SL220 with last soft V2.4.55). i have connected klang 1 with digital audio link to TV and cable "jack/2cinch" to Apple AirPort Express. I would like to use AirPort express with my iPhone to braodcast music in AirPlay when TV is turn off and it doesn't work !! Argh

TV sound is ok : 2 loudspeaker and subwoofer work with digital audio link (blue LED).
When TV is turn off, i can't hear music by AirPort express because subwoofer is in standby ! i have to disconnect digital audio link and then subwoofer turn on with green LED.
Can you help me ? How can i do ?
Thanks