Last Updated 1 day ago
Overview
The Dedolight DLED4N-BI is a passively cooled 40W bi-colour NEO spotlight using the M-size optical system. It suits controlled keys, small projected shapes and interview accents where quiet operation matters.
Product views: Dedolight California. Select an image to enlarge.
The M-size format places it alongside the classic DLH4 and higher-powered DLED7N for compatible optical accessories. It trades the DLED7N’s extra output for fan-free operation. NEO electronics also distinguish it from the original DLED4-BI.
Key specifications
| Specification | Details |
|---|---|
| Source | LED with aspheric focusing optics |
| Power reference | 40W head |
| Colour / white-light range | 2,700–6,600K |
| Native beam | 4–60° |
| Optical accessory family | M |
| Cooling | Passive; no head fan |
| Weight reference | Approx. 2.9lb head reference; excludes the complete rig |
| Control | DTneo/DTneo+: local and DMX; wireless with DTneo+ |
| Working package | Head, fitted optics, support, appropriate power electronics and cables; battery/AC accessories depend on configuration |
Strengths and limitations
Strengths
- Fan-free head and tunable white light.
- M-size system supports detailed optical shaping.
Limitations
- Less output than DLED7N in a similar head size.
- 40W can be restrictive through large modifiers.
Practical uses
| Setup | Working approach |
|---|---|
| Quiet dialogue | Place the head close enough for exposure, then focus and flag it. |
| Small projection | Fit the compatible M-size imager for a shuttered slash, gobo or iris. |
| Classic-kit LED option | Check accessory fit and required exposure against the DLH4 package. |
Set the head position for the direction and shadow first, then choose focus and accessories for coverage. A sharp gobo or precisely shuttered image needs imaging optics; closing barn doors around a small spot does not create the same optical result.
Output and colour
The 4° spot and 60° flood serve different coverage needs. For a product shot, establish the required lit area before comparing levels. A narrow spotlight remains a small, hard source; a softer key requires diffusion, a softbox or bounce.
For a useful comparison, record colour setting or lamp, dimming level, optic, focus position, distance and illuminated area. Measure after diffusion or reflection when that is the working setup. Wattage, centre intensity and coverage describe different parts of the result.
Power and batteries
Use the correct DTneo or DTneo+ controller with a DPOWN-series head cable. The controller accepts the documented 12–18V DC range through the specified battery or supply arrangement. The optional DLPS15-100 AC adapter attaches through the V-mount interface; a head-only purchase is not a mains-powered kit.
The head wattage and the controller’s maximum rating answer different questions. Size a battery by both usable watt-hours and continuous discharge capability, then allow for controller losses and reserve capacity. Do not assume every V-mount pack is suitable solely because the mount fits.
Control, cooling and camera operation
| Control path | Operating notes |
|---|---|
| DTneo | OLED/local control and wired 5-pin DMX; documented 8/16-bit options and dimming curves. |
| DTneo+ | Adds CRMX and Bluetooth to the supported NEO control package; check the exact controller supplied. |
| Camera operation | Test the intended dimming level, frame rate and shutter with the selected high-speed mode. A headline maximum frame rate is not a result for every camera setting. |
Cooling reference for this head: Passive; no head fan. Listen to the complete working package, including its controller or ballast, rather than checking only the head.
Modifiers, rigging and the working package
| Item | Compatibility and working notes |
|---|---|
| Accessory family | M-size; check the compatibility list for the actual head and generation. |
| Projection | Compatible DP1/DP2-family M-size imager, projection lens and desired shutter/gobo/iris assembly. |
| Beam control | Model-approved barn doors, light shield ring and wide-angle/parallel-beam attachments. |
| Soft light | Compatible speedring/softbox or a properly supported diffusion/bounce surface. |
Aspheric focusing optics are different from a conventional Fresnel. Check the actual accessory’s compatibility list, locking method and lens choice. A brand name or similar front diameter is not enough to establish fit.
Fit the intended front accessory before choosing the stand position. Check tilt clearance, balance, cable movement and independent support for any external electronics. Use the documented mounting hardware and appropriate secondary retention for the installation.
Alternatives and related fixtures
| Fixture | Reason to compare |
|---|---|
| Dedolight DLED7N-BI NEO | Useful output in a compact M-size package. 80W head in the current California NEO listing; M-size optical system. |
| Dedolight DLED3N-BI NEO | 40W class in the small S-size system. 40W head; S-size optical system. |
| Dedolight DLHM4-300 | Self-contained mains package with manual dimming. Up to 150W at 24V with approved lamps; M-size optical system. |
Classic Dedolight DLH4: the original low-voltage tungsten alternative with a separate supply. Compare the full power and accessory package, rather than the bare-head price.
What people are saying
Manufacturer and distributor demonstrations
Overview of the dedolight NEO family. A manufacturer demonstration of the system rather than an independent DLED4N output test. View the demonstration.
Videos
Overview of the dedolight NEO family. A manufacturer demonstration of the system rather than an independent DLED4N output test.
Watch the demonstration on Vimeo.
Rental and used-fixture checks
- Read both head and controller model labels; original DLED electronics are not interchangeable by appearance.
- Test the full fade, warm/cool adjustment and any CRMX link actually needed.
- Inspect the focus travel, front optics, pigtail connector and cable strain relief.
Confirm availability of service and replacement parts with the relevant supplier before buying older equipment. Check the actual kit contents against the shot: a missing controller, imager, lens or cable can matter more than a low head-only price.
Documentation and specifications
- Dedolight California: Dedolight DLED4N-BI NEO product and package information
- Dedolight manuals, technical sheets and photometric documents
- Dedolight imaging systems and optical size families
- Dedolight manufacturer and dealer contacts
Product photographs: Dedolight California. Published specifications describe the referenced configuration; check the markings and instructions of the actual head, controller and fitted accessories.
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