Pro-Ject Bach 用户手册

 
Some of our floorstanding  models feature an additional hidden 
chamber accessible through the base that may be sand filled  
for the final  touch in system  tuning.  Sand filling is an 
easy and cheap way to improve the reproduction of the bass 
range. It raises the weight and stability of the system and 
quiets the enclosures throughout a remarkable damping 
effect. To fill in the sand, put the speaker on the top on a 
soft cloth to protect the cabinet. Then fill in the sand through 
the central hole at the base until the chamber is completely 
filled up and seal it with the black stubble. 
 

!Do not use moist sand - it can damage the wooden cabinet! 

 
 

Your speaker cabinets can be cleaned periodically with a soft, 
slightly damp cloth. It is not necessary to wax them. Our 
cabinets feature a smooth but strong finish. Still, please keep 
them out of direct sunlight and heat, since the colour of the 
veneer would pale. Should the bass drivers become dusty, it 
is safe to use a soft brush to clean the woofers. 
 
*  Under NO circumstances should you attempt to clean dust 
from the tweeter. Doing so will damage the delicate silk 
domes.