YANQ (yet another noob question): the doco for the subwfr says to connect using "standard shielded coax cable". So, for example, would component cable do?

Regards,
David

Yup.

Any RCA cable will work just fine.

This one might not work so well, though.

Sure, it'll do fine so long as your AVR has the Electron Tunneling feature.

Is that an early failed WiFi experiment?