XDLT Compatibility with Source 4 Fixtures
UPDATE: As of January 2022, XDLT barrels have had their castings revised to accept all existing Source Four LED fixture body hardware. The following information applies only to XDLT barrels shipped prior to January 2022.
Old casting New casting
Description Regarding Lens Tubes and Shutter Barrels
With the release of XDLT lens tubes, there are some shape and compatibility changes that need to be taken into account.
The XDLT lens tubes are of a different diameter and thus cannot fit into a Standard or EDLT shutter barrel.
In turn, Standard and EDLT lens tubes cannot fit into an XDLT shutter barrel.
Description Regarding Shutter Barrels and Light Engines
It is possible to fit the newer XDLT shutter barrel fit onto the Source 4 LED S1/S2 Light Engines, and vice versa.
This allows an XDLT lens tube to be used with a Source 4 LED S1 or S2 fixture.
However, the retaining screw will need to be changed to prevent the shutter barrel from falling out during rotation.
Reference the table below to make sure you have the correct shutter barrel screw.
CAUTION: Installing an XDLT shutter barrel on a Source 4 Incadescent light engine is NOT RECOMMENDED as the higher temperatures may damage the XDLT shutter barrel and will result in a voided warranty.
| Shutter Barrel | Engine | Retaining Screw Needed | |
|---|---|---|---|
| Standard | Source 4 Incandescent / LED S1 / LED S2 |
HW5197 (1/4-20 X 5/8" Ph) |
 |
| Standard | Source 4 LED S3 | HW5832 (1/4-20 X 3/4" Ph) |
|
| XDLT | Source 4 LED S1/S2 | HW5919 (1/4-20 X 1/2" Ph) |
|
| XDLT | Source 4 LED S3 | HW5919 (1/4-20 X 1/2" Ph) |