The speaker may appear to lack in bass output if the bass management filter has accidentally been applied.
On the rear-panel controls navigate to the Subwoofer HPF/LPF Enable page and set it to OFF:
Or, in the SoundAlign interface open the info box for the speaker in question, where the status of the bass management filter will be displayed:
If the bass management filter is active, disable it via the radio button on the SoundAlign main window: