25-Jul-2016, 08:58
The only other reason I see is the network. You should check what connection does Phantoms use (you can find a small "tag" in the Spark → Settings → Devices). You can't control, what standard speakers would use for communication, but it's said that they have the following priorities: Ethernet → Plc → Wi-Fi. Also you can see version numbers for both Dialog and Phantoms, could you please show this screen to us?