I own some GD Wall of Sound cabinets . They have Banana plug type connections . The Wall of Sound single 15" cabinets were a little larger then the Alembic A -15 cabinets that were sold by Alembic . We have had this discussion in the Alembic Club several times before and I have given all the dimensions of the various versions from the GD Wall of sound version to the Alembic versions and the early Bag End single 15" types . I own examples of all the above
The original versions were all of front loaded infinite baffle design . That means NO port .
I looked at the advertisement for the cabinets in question and they are ported and not the original versions . I have seen that design before as well . I knew someone who was selling those back in the the 1970's as well .
I had contact with him earlier this year till right before he passed away . That design seemed to worked well with the GAUSS 4580 15" drivers.