What parameters do you rely on to get your mid-bass driver selection in the ball-park for installing into a lower door?
In my case it's for a Kia SUV where the stock 6.5" mid-bass driver is down low in the front of the door firing into my left calf. Factory tweets are in door mounted sail panels.
My estimated front door volume: 4.44 cu. ft./125.72 Liters.
From my preliminary assessment based on door volume alone, this would make my doors effectively an Infinite Baffle "enclosure" for the mainstay of 6.5" drivers.
They're not deadened yet, but I intend to use 3 sq. ft. of Resonix CLD per front door (25% coverage).
If I'm correct on this, would it be appropriate to be looking for drivers with a 0.5+ Qtc?
What other driver parameters to should be considered?
Yes, a Helix DSP will be used.
Yes, a 12" Sundown Audio D-4 sub will be installed in a rear underfloor sealed enclosure.
Yes, I'm considering wideband drivers to cover the actual mid-range on up, but still not clear where to put them. Andy of AF suggested plugging them in right next to the mids in the front lower door.
No, I'm not a spring chicken and almost definitely can't detect audio signal above 15KHz.