It is possible to get surround sound using the speakers from your TV for the front channels, two kien SATs for the rear channels, and the kien SUB for the bass. To enable this feature, please follow the steps described below.
Step 1: Connect the SUB to your TV using an optical cable.
Step 2: Go to the Audio Settings of your TV, and make sure to set the audio to play over the TV loudspeakers. This will unsure that both the speakers from the TV and the kien system will play.
Under the 'Audio Format' setting, select 'Dolby Digital'. The Audio Format setting can often be found under the advanced or expert section of the Audio Settings.
Step 3: In the kien app, select the Digital input in the SUB settings.
Step 4: Make sure that you assign the Rear Left and Rear Right channels to the two kien SATs in the app.
And that's it! You should now be able to enjoy surround sound content with only two kien SATs and a SUB.