Filling ARX A3s mass loading chamber ????

[mustvid]

I picked up a used pair of A3's recently. I am considering filling them with plaster sand or silca per per the instructions. I notice the that fill hole is really small. I have a couple of questions for Jon or those who have filled their mass loading chamber.

1.) What is the easiest way to get the sand in? Did you use a funnel or something?
2.) How much fill does the chamber take?
3.) Is there a noticeable sound improvement or difference?

Thanks!

[BufordTJustice]

I picked up a used pair of A3's recently. I am considering filling them with plaster sand or silca per per the instructions. I notice the that fill hole is really small. I have a couple of questions for Jon or those who have filled their mass loading chamber.

1.) What is the easiest way to get the sand in? Did you use a funnel or something?
2.) How much fill does the chamber take?
3.) Is there a noticeable sound improvement or difference?

Thanks!

1) A Funnel and patience
2) I forget
3) The bass gets tighter and more defined. And they get heavier by a LOT. ;)