Adding a subwoofer into my system


I currently use a Wharfedale SW150 subwoofer and a Yamaha AV amp in my TV system, I would like to give the sub a try in the audio system which comprises : Cambridge Edge NQ streamer, balanced cables to a McIntosh 275 amp, speakers are Harbeth C7-ES3 using the 8 ohm posts.  What would be the best way to introduce the sub ??Merry Christmas and happy new year to all - stay safe
xiang
Usually its the most senior/respected party first, so in this case it would be, "Mr System, this is Mr Warfdale" etc.

Or you could just connect Mr Warfdale to some wires and plug him in. Either way it is going to take some serious schmoozing for him to get along with Mr Room.
Well that's very whimsical Mr MC but I'm not sure quite how to connect Mr W's wires to Mr Cambridge or Mr McIntosh

There are a few ways to hookup the subwoofer. If you use the high level you will run another pair of speaker cables from amp to the high level inputs on the subwoofer.
If you use the low level you will run another pair of of interconnects from your preamp outputs to the low level inputs on the subwoofer!!
HELLO SUB

Seriously what are your options?
Much time wasted around here looking uppossibilities for posters that have them in front of them.