Those are thick cables, and they will be much more difficult to manage inside the cabinets, but I guess you can make it work. Obviously I have not tried working with these inside the T Ref’s so hard for me to comment specifically.
For instance, you should pay attention to the location of the holes you drill between the subwoofer box and Mid-woofer boxes. If you don’t get those fat cables all the way into the side/corner, you might end up with a conflict between cables and mid-woofer magnets.
EDIT: Just been in contact with Tony, who says the S-25 is thick, stiff and not easy to work with. He suggest using S-14 for the MTM section, and then maybe S-25 for the woofers. I agree with this.
