4x dynaudio 30w100 woofers, seperate boxes or all in one box?

[discl]

Hi,

I have 4 dynaudio 30w100 12" woofers which I would like to run in a series-parallel configuration and would like to build something similar to the m4u on the dynaudio accoustic website:
http://www.dynaudioacoustics.com/Default.asp?Id=285

They seem to use a ~500liter box for these 4 drive units.

I'm wondering if it's possible to split them up into 4 seperate boxes of around ~100l in size to make them more portable.

What differences would there be between keeping all 4 drivers in one box and spliting them into 4 equal literage boxes?

Thanks in advance,
Radek