Correctomundo and why I always recommend one build the largest cabs practical with some means of easily tuning the vent to ensure adequate tuning flexibility in-room. It's far easier to shrink a cab to fit the acoustics than stretch it or worse, have to start all over again or accept a compromised response. This has been both the bane and boon of the T/S filter design routine that pares away all the excess 'fat' when folks use basic small signal measurements and don't factor in additional series resistance and thermal power spikes that demand a larger cab tuned lower to allow a driver to sound as life-like as it can within its limits rather than the cab's

GM