Roll off vs vent volume in ported enclosures


2011-12-17 1:42 am
Was debating with someone about how the ratio of vent volume to enclosure volume affects enclosure roll-off below tuning.

He was saying that a larger vent will induce a steeper roll-off for a given tuning due to unreliable impedance interaction.

Is this the case in practice or is he misinformed?