[Shotimes] subwoofer replacement

[Alan Fanning]

On the Blaupunkt web site there is a discussion on building subwoofer boxes.
They say that adding batting can _increase_ the effective box volume by up
to 30%. I was thinking the opposite, but that's what they say.

    Alan

> 
> Alan:
> From what I know the batting is more for resonance control and trying to
> beak up standing waves. My home speakers also have this. I don't think it
> affects the box volume calculations.
> .
> .
> 
> 
> 
>> Kevin wrote:
>> 
>>> I think I misspoke-I calculate the JBL box around .25 ft3? This brings
> up a
>>> question I never got a good answer on. When calculating box volume does
> the
>>> volume of the driver need to be subtracted from the total? How do you
> get
>>> the driver volume? Estimate from the dimensions?
>>> .
>>> .
>> 
>> Do I recall correctly that the effective volume of a speaker box can be
>> adjusted by packing it with fiber batting of some sort?
>> 
>>         Alan