Customized version of http://www.thingiverse.com/thing:590871

Created with Customizer! http://www.thingiverse.com/apps/customizer/run?thing_id=590871

Using the following options:

makeTerminalNotch = false
portWallThickness = 8
terminalNotchInset = 2.2
holeAngle = 52
terminalNotchOvalWidth = 24.5
sphereVolumeLiters = 1.5
wireHole2Diameter = 0
wireHole2Angle = 270
speakerScrewHoleDiameter = 1
speakerMountCountersink = 2
numberOfSpeakerScrewHoles = 3
sphereWallThickness = 5
manualSphereInternalDiameter = 100
wireHole1Angle = 10
speakerHoleDiameter = 37
makeBassPort = true
useManualSphereInternalDiameter = true
terminalNotchRotation = 180
wireHole1Diameter = 2.5
portLength = 50
flatBottomOfPrintDiameterIfNoBassPort = 20
terminalNotchOvalHeight = 20
portInternalDiameter = 15
speakerMountDiameter = 33
speakerScrewHoleSpacing = 33
markingThickness = 0.5
trenchDepth = 2