Welding System User Manual
Page  44                   
 iQ  Series, Ultrasonic Hand Held Systems User’s Manual
Dukane Manual Part No. 403-577-01
Booster Notes
How to Tell the Booster 
Input End from the Output
1.  The depth of the threaded hole on the output end is 
always  deeper  than  the  threaded  hole  on  the  input 
end.
2.  On  an  amplifying  booster  (gain  > 1.0),  the  larger 
diameter end is the input end. On a reducing booster 
(gain < 1.0) the larger diameter end is the output end. 
On a neutral acting booster the diameters are equal.
3.  The  cap  screws  on  the  booster  mounting  rings  are 
always inserted from the output end toward the input 
end.
How to Tell if the Booster 
Is Amplifying or Reducing
Boosters  have  a  die-stamped  number  on  their  surface  that 
indicates their  gain or reduction. If the number is greater than 
1.0 (e.g.  1.5),  it is an amplifying booster. If  the number is 
less  than 1.0  (e.g. 0.6),  it  is  a reducing  or reverse booster. 
A neutral booster has no gain and has 1.0 stamped on it. A 
neutral or coupling booster is used to provide another probe 
stack clamping location for added stability.
CAUTION
NEVER  install  a  booster 
upside  down  to  change 
an  amplifying  system  to 
a  reducing  system.  The 
boosters are dimensionally 
asymmetric. They are tuned 
from  input  to  output  to  act 
like  an  acoustic  lens.  Re-
versing them will not give the 
expected  results  and  may 
cause damage to the system.










