L1, the 706G drivers, these sound OK, but when tapping the cone on one side, something is hitting the cone, also pushing cone in evenly, there's some rubbing. Thing is, they sound fine, and only if I play them a little hard, they rattle a little. Both speakers do this almost exactly.
When pushing the cone in, they seem to have a lot of travel, maybe 1/2 inch, unless these cones are supposed to travel/suspension like this usually when a speaker is damaged, it distorts, plays quieter, or wont play at all.
I have a set of 708G's (L7) and they barely move at all when you push in the cone.