Can I use the same lens tubes in my ColorSource Spot or Source Four LED that I use in my standard Source Four?
You can, with some exceptions.
All standard lens tubes will fit into the Source Four LED Series 1, Series 2, and ColorSource Spot. For better light transmission and image quality, we recommend the use of EDLT lens tubes with LED fixtures. More information on these lens tubes can be found in the EDLT Datasheet.
The 50 degree lens will have some clipping and using a specialized LED tube is highly recommended. See Difference between 50 degree lens for LED and standard fixtures 450EDLT.