1)  In xfire be sure that mic settings in xfire ( extras, option, voice ,are at max

 

 

2)Than  go to start( left corner below) /configuration screen/ & click on sound  icon than a windows  pops up like this(screenshot 2)

 

 
 

Than select the second tab from left opnemen = recording and than select microphone(screenshot 3), most people have only 1  mic, so select the one with green V 

 

 

and  double left click on it ,than an other window pops up like this(screenshot 4) there check the 2 tabs with black arrows   , aangepast = modified or adjust  and  niveaus = levels

 

 

in  tab modified/adjust click in tic box & activate +20Db and in tab levels   be sure level is at 100%,, thats all, after this sound in xfire should be loud ennof

 

For   Windows Xp  they must go start: configuration screen & double left click on sound icon and select advanced    than  click on options and  than click on properties, in there they 

 

 

have 2 options possible  output and input  device , the must select input devicec (recording device)  and put the mic volume at   desired volume  or max vol