I don't mean to be a monkey on your back, but...
No problem at all. I've enjoyed your posts for a long time in various forums.
"As the driver heats the air inside the sealed box due to prolonged high SPL operation, when using the types of driver/amp combinations we typically use, the benefits of stuffing to apparent box size decrease."
Air temp inside the box isn't relevant to the effective volume increase.
I have to disagree. Heated air expands, so it is relevant to the apparent volume of a trapped volume of air.
"But, this effect will be seen regardless of stuffing and box size."
That I agree with
"In a sealed system 1/2 of the total output of the driver is radiated into the trapped air in the box and momentarily stored. Some of that stored energy will be released through the vibration of the box panels. Some of it will be released through the drivers cone, which is the weakest link in the sealed box. Some of it is absorbed and dissipated as heat by stuffing."
The first sentence is correct as fas as acoustic output, but that's about 1% of the energy the driver is putting into the box air.
The other 99% is the going into compressing/rarefacting the air spring, and on every half cycle it's dissipated as heat in the voice coil (mostly) and amp output transistors.
The electrical energy that's lost to heat in the coil is the irrelevant part to this point, as it's never converted into acoustic output before it's converted to heat.
The heat dissipated in the coil, as it raises the temperature of the trapped air is relevant in that it causes the air spring to offer more resistance by expanding the air, or increasing the pressure inside.
"In both cases, reduction of the temperature of the trapped air and conversion of stored energy to heat, stuffing is an effective solution to varying degrees."
Again, I don't think these have anything to do with stuffing, other than the stuffing is good insulation and will impede heat xfer to the outside.
Then you'll have to explain exactly how stuffing raises apparent box volume, or what Nousaine means in his original article:
The particulars of fiber stuffing are pretty interesting: The air inside your enclosure actually heats up as your woofer moves, making the air stiffer. When the enclosure is stuffed with fiber, the fibers wiggle, dissipating some of the heat and making the system work as though the box were larger. Theoretically, your woofer/box bass system can act like a system that's a maximum of 40 percent larger when you've latched onto the right stuffing recipe - in other words, if you have an enclosure that offers 1 cubic foot (1 ft³ ) of internal volume, in a perfect world a good stuffing job will make it perform like an enclosure that offers 1.4 cubic feet of internal