Allen&Heath DR128 SERVICE MANUAL - Manual (Page 37)

30 Hardware Configuration
DR128 U SER G UIDE
6       
* &*     
    
  %!1    &    
    
 */ .  (    5 
& 
Caution
Do not attempt to force the gain trimmers as they can easily be
damaged.
6   
*   & *   /$3!: <   5  * /!1 5   =
6   
*
    ,  & &&     
Anti-Clockwise Mid Clockwise
Sensitivity (dBu) +4 -4 -8
Gain (dB) 0 +8 +12
1 2 3 4