AVS Forum Addicted Member
Join Date: Oct 2003
Mentioned: 478 Post(s)
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"The greater sd and Xmax of the SVS will surely make it louder at the higher frequencies."
sd and xmax combine to create swept volume. that is what limits low frequencies. the high frequencies are limited by sensitivity and power.
"So if the driver has more sd and more Xmax that can't be good, there's going to be port compression."
that would be true if the ports were too small, but the ports on the svs are just fine.
"It is well documented that if even one port is plugged that the port chuffing is quite audible."
i'm not sure what your point is. if you have less port area, the air velocity increases. once you go past a certain point, you get chuffing. the reason the subwoofer has three ports is that at full volume, three ports are needed to keep air velocity below the point of chuffing.