I own T+A Criterion 2100 TL speakers
Now those are true TL speakers.
In the late 70's I owned Infinity Monitor Jr.'s; they had varying densities of cotton batting inside the cabinet and Infinity called them a TL design. I always felt they were stretching the TL definition and that they were actually just another vented cabinet design. IMF's were the TL standard back then.
mrmichaelp
Those are beautiful speakers... impressive