Interesting thanks for the input guys. While the diameter is higher the post is also drilled out so I’m not sold that the mass is changing things dramatically in this case. Archguy, I think you may be on to something with the contact area, it is greatly increased on both the banana clip side and the inside. These are viborg with a blend of copper and brass, as I understand it all copper would be rather hard to torque, Which it seems is also key... not planning on going hard for any new connectors but I’ll probably do the other speakers as that explains the difference I’m hearing!
bigger posts=better sound?
Broke off one of the posts on my Dahlquist 10s while moving stuff around so I replaced it with a new gold-played wider (in diameter) post and it seems a lot more “open”. The originals were old (obviously) and nickel. I had to snip the connection inside to make it fit around the new post. Haven’t done the second speaker yet... but before I do, am I crazy?