No sound from radio on 2003 Porsche Boxster S

The radio does everything it's supposed to do but there is no sound

Asked by for the 2003 Porsche Boxster S
Do you have the owners manual? Possible seperate fuse for the amp.Unlikely all speakers would fail at same time.
1 more answer , 1 more comment
see previous post. it has to be the connection or the speakers.
It's the Bose system, does that matter?