my a7X are from a couple years ago, they have no port issues though. The problem is the much more recently released T10S Subwoofer, which port for a pedal switch just doesnt work, it is a gimmick. Pedal switch position makes no difference. The A7X satellites work flawlessly, zero complain about them.
They have been recently replaced, by a more expensive model, which is not purely analog as before!!! so better grab a couple old A7X before they are gone forever. Berlin favourite speaker... new model is digital, and converts the signal to digital before processing it and modifying it... not good.