port vs passive radiator

Thanks for the link. So PR's would have a better response b/c of the higher rolloff? The secondary fs would be the 'tuning' frequency of the PR?

Thanks for all.

DYohn wrote: PR systems have by far the worst performance of any standard alignment when it comes to group delay, which tends to make them sound slow or flabby and will definitely affect the car's transfer function if you're looking to maximize SPL.  This is why I don't like PR systems as a rule: too much delay in the output and it tends to be in the audible spectrum in a car.

1. Transfer function, SPL. How about SQ? Will it seem like it's delayed more than usual? Can time-delay comphensate for this?

2. How about box size; will a larger box  slow it down more? The tech support admin from Boston told me that larger boxes (other than the recommended .5cu' for 1 10"G5 with a GTR PR -I had them in a 1.8cu footer at the time) will possibly damage the active driver as there's not direct pressure on the PR so it makes the sub move too far -basically what he said.

tcss wrote: Slightly off topic. I had a customer ask me if I've ever done a box with a compassionate radiator. You know a radiator that cares deeply about things.

Compassionate radiators are a very good thing. We always need to radiate more compassion