Don't think they would be connected to each other. They wouldn't both be female otherwise. Are u sure there is no male connectors in bottom of cabinet?

To be honest I haven't even opened the cabinet up yet.  I need to move the machine to a spot where I can get the glass off and open it up. 

Could someone with a Sys 80 machine take a pic of the backbox showing top left hand corner where the speaker is please.  I can see where there should be a speaker in this machine (it is obviously missing).