Mar 11, 2017
Thank you for your question. Unfortunately this setup would not work. Currently the Acoustimass 300 can connect to our SoundTouch 300, Lifestyle 600/650 but not to the SA-5.
Currently, it is not possible to configure the Acoustimass 300 to work with the SA-5. The AM300 will only work with the SoundTouch 300 soundbar.