No, you don't need adaptors for SpeakerLink for sending or receiving AES/EBU signals.

Adaptors are needed when you have older gear with XLR ports and want to send AES/EBU over RJ45 connectors instead.

Since Meridian in their wisdom already send AES/EBU over cat5e/cat6/cat7 cables both 2ch SpeakerLink and 8ch MMHR no adapter is needed.

DSP8000SE, DSP7200SEHC, DSP5200SE sides, DSP7200SE rears, 861v8, 210, Sim2 Ultranero 4, Stewart Cinecurve 2.35:1, XEIT CM-5E Anamorphic lens, Dune HD Duo Cinema 8K and Wireworld Platinum 48G HDMI -> UHD722 -> Shunyata Omega Ethernet. Shunyata/Furutech power-cables/filters. SR Master Fuse@861v8. Uptone Etherregen with 10MHz OCXO clock.