Have you tried connectin' them from afar? Or right directly infra-red connection to infra-red connection? There is no certain angle. When I tried the Music Star for a day, me and my friend connected and it was very successful. However, when we connected from afar (about over half a foot), we had some difficulty. So I have had that issue once. So it must be infra-red connection to infra-red connection, or at least half an inch or an inch away. Hope I helped!!!