playSound3D heard from everywhere

[StreetFighter163]

I have a problem with playing sound: my sound effect is simply heard from everywhere, although i set the max distance to 30:

  
addEvent("addShotFx",true) 
addEventHandler("addShotFx",getRootElement(), 
function(obj, vehicle,xoff,yoff,zoff) 
    if vehicle then 
        --if a vehicle was hit, create an explosion at the local coordinates 
        local matrix = getElementMatrix(vehicle) 
        local x1 = xoff * matrix[1][1] + yoff * matrix[2][1]+zoff * matrix[3][1]+matrix[4][1] 
        local y1 = xoff * matrix[1][2] + yoff * matrix[2][2]+zoff * matrix[3][2]+matrix[4][2] 
        local z1 = xoff * matrix[1][3] + yoff * matrix[2][3]+zoff * matrix[3][3]+matrix[4][3] 
        createExplosion(x1,y1,z1,getElementData(obj,"explMgExplosion")) 
    end 
    local x,y,z = getElementPosition(obj) 
    local matrix = getElementMatrix (obj) 
    local ex = matrix[2][1] 
    local ey = matrix[2][2] 
    local ez = matrix[2][3] 
    fxAddGunshot(x,y,z,ex,ey,ez) 
    local sound = playSound3D("sounds/shot.wav",x,y,z) 
    setSoundMaxDistance ( sound, 30 ) 
    setSoundMinDistance ( sound, 0 ) 
end) 
  

this event is triggered by the server.

It's a bit annoying to hear 15 players shooting who are miles away

[12p]

  
addEvent("addShotFx",true) 
addEventHandler("addShotFx",getRootElement(), 
function(obj, vehicle,xoff,yoff,zoff) 
    if vehicle then 
        --if a vehicle was hit, create an explosion at the local coordinates 
        local matrix = getElementMatrix(vehicle) 
        local x1 = xoff * matrix[1][1] + yoff * matrix[2][1]+zoff * matrix[3][1]+matrix[4][1] 
        local y1 = xoff * matrix[1][2] + yoff * matrix[2][2]+zoff * matrix[3][2]+matrix[4][2] 
        local z1 = xoff * matrix[1][3] + yoff * matrix[2][3]+zoff * matrix[3][3]+matrix[4][3] 
        createExplosion(x1,y1,z1,getElementData(obj,"explMgExplosion")) 
    end 
    local x,y,z = getElementPosition(obj) 
    local matrix = getElementMatrix (obj) 
    local ex = matrix[2][1] 
    local ey = matrix[2][2] 
    local ez = matrix[2][3] 
    fxAddGunshot(x,y,z,ex,ey,ez) 
    local sound = playSound3D("sounds/shot.wav",x,y,z) 
    setSoundMaxDistance ( sound, 10 ) 
    setSoundVolume ( sound, 1 ) 
end) 
  

And you should use MP3 sound, not WAV. WAV uses too much MB