Bulgin Buccaneer

Buccaneer IP66, IP68 & IP69K Waterproof Electrical Connectors for Data and Power by Bulgin

Harting Han

https://b2b.harting.com/ebusiness/en...ors-han/100382

For 8 poles or les Speakon or Cliffcon

NLT8MP - NEUTRIK - PLUG, SPEAKON, 8WAY | Farnell United Kingdom

CLIFF Electronic Components - CliffCon Touchproof Plug and Socket Connectors

RS and Farnell stock them , just finding the ones you need