I just received my dock and all the connections worked out of the box except the headphone jack, which is supposed to power my external speakers. When plugged into the dock, no sound came out of my speakers. When plugged into my laptop, there was sound. I started reading the posts on this forum, but couldn’t find the answer I needed. So I started playing around with sound settings.
First, I set my pluggable speakers as the default speaker: !](https://d2r1vs3d9006ap.cloudfront.net/s3_images/1206989/playback_inline.gif?1431983678)](https://d2r1vs3d9006ap.cloudfront.net/s3_images/1206989/playback.gif?1431983678)
Then, I selected both internal and external speakers in Volume Control Options:
(Note that you don’t have to select both speaker options. I just chose to.)
Finally, I used the Volume Mixer to set the audio levels:
And, presto, I had sound out of the external speakers.