Firstly, this is an outside or in the garage job. Use a large Pyrex measuring cup to scoop from the bag and slowly pour into the top of the columns while gently shaking the pillar to move the sand into the hole. Keep doing it until about half of the column is full.
Great debate ensues as to how full to fill each column. Many say all the way will kill too much of the speaker energy dulling the dynamics. You can always experiment with filling and emptying after listening to results.
Great debate ensues as to how full to fill each column. Many say all the way will kill too much of the speaker energy dulling the dynamics. You can always experiment with filling and emptying after listening to results.