Help with connecting REL Tzero Mk III with KEF Eggs

Hi,Hope someone can help.Here in Australia,I can't find any retailers/distributors who sell both REL and KEF.Firstly,I am not very knowledgeable/skilled with electronics.I bought the Eggs last year,discounted and of course the Hi Fi shop didn't tell me they need base.I use them plugged into the tv,but want to use them for quality bluetooth music from my phone(FLAC).They have a "Sub" socket on the master speaker,but the REL Tzero I received today,says nothing and provides no connector for this.Hope someone can help.I bought the Eggs 10 minutes away and the REL online from Melbourne-880kms/550miles away.Thank you