Lumishore SUPRA THX1604 Thru-Hull Underwater Light with Driver
Lumishore SUPRA THX1604 Thru-Hull Underwater Light with Driver — Product description
Lumishore's SUPRA-series flagship thru-hull underwater light. The THX1604 is a 2-lights-in-1 dual-color (blue plus white) fixture rated at 20,000 fixture lumens (45,000 raw) through a 110-degree ultra-wide beam. HICOB LED array (48 x 10W white + 108 x 3W blue), external driver, 50,000-hour rated life, three-year warranty. The right pick for owners who want pool-effect underwater illumination on yachts where the visual impact matters most.
The SUPRA THX1604 is Lumishore's highest-output thru-hull underwater light, sold as a single fixture with the matched external driver. It's the part of an underwater lighting installation that owners spec when they want the swimming-pool effect at scale: 20,000 fixture lumens through a 110-degree ultra-wide beam puts down enough light to illuminate an entire transom-line area for a typical 60-to-100+ foot yacht, with the kind of intensity that visibly shows in even relatively dark anchorages.
The 2-lights-in-1 architecture is the SUPRA THX1604's defining feature. Most underwater lights are either single-color (typically blue or white) or RGB color-changing. The THX1604 is dual-color: a white array (48 LEDs at 10W each) and a blue array (108 LEDs at 3W each) housed in the same fixture, controllable independently. The result is two distinct underwater lighting effects from one fixture. White mode delivers the classic spotlight-on-water look that's good for boat-side swimming visibility and security. Blue mode delivers the pool-effect, aesthetics-first underwater glow that owners associate with big-yacht entertaining.
Lumishore's controls let you do more than just switch colors. The lights can fade between blue and white, adjust brightness independently for each color, and strobe at two speeds. Operator control surfaces include the SUPRA I-Connect Hub and switch (the dedicated Lumishore controller), or directly from a compatible multifunction display, or from the Lumishore EOS-LUX-SUPRA dedicated display, with the SUPRA Bridge module added. The SUPRA Bridge also adds Wi-Fi control from a phone or other connected device, either through the compatible MFD or through a local Wi-Fi network.
The HICOB (High-Intensity Chip-On-Board) array is the LED architecture that produces the extreme lumen-per-fixture output. Where conventional underwater lights use discrete LED packages with individual lenses, HICOB packs multiple LED dies onto a single substrate with a shared optical system. The result is higher total flux at a smaller package size, less optical loss, and better thermal management because the driver electronics live external to the fixture rather than inside it.
External-driver architecture (THX series, vs the TIX series with internal drivers) is the install-side trade-off. With the driver mounted separately inside the boat, the fixture itself is smaller, lighter, and has lower thermal load underwater. The trade-off is that service of the driver requires access to the internal mounting location, which is the typical install in larger yachts where dedicated electrical compartments exist anyway.
The flush-fit thru-hull mount is sized for transom, side-hull, or bottom-hull installation with a low profile that doesn't affect hull hydrodynamics at speed. The 1-inch standard fitting interfaces cleanly with most aftermarket thru-hull mounting kits and matches Lumishore's mounting hardware kits for clean installation in fiberglass, composite, or steel hulls.
Beam angle is 110 degrees, which is the ultra-wide configuration that spreads the 20,000 fixture lumens over the maximum possible footprint. For a 60-100 ft yacht with two THX1604s mounted on the transom, the overlapping beams cover essentially the entire stern area with no dark spots. For larger boats, additional fixtures along the side hull extend the lit area further forward.
The LED life is rated at 50,000 hours, which translates to many years of normal seasonal use. Lumishore covers the fixture and driver under a three-year limited warranty against defects in materials and workmanship.
Power supply and current draw are matched between fixture and external driver. The driver is sized to accept boat house-bank DC supply, with output regulated to drive the HICOB array at rated current. Cabling between driver and fixture follows Lumishore's standard install pattern, typically a sealed multi-conductor cable run through the hull alongside the fixture mounting.
What's in the box: the THX1604 fixture with its 110-degree optic, the matched external driver module, the through-hull mounting hardware, the gasket and seal kit, the fixture-to-driver cable, and the documentation pack. The SUPRA I-Connect Hub and switch, the SUPRA Bridge module (for MFD or Wi-Fi control), and the EOS-LUX-SUPRA dedicated display are all sold separately as needed.
Key Features
- Dual-color (blue and white) 2-lights-in-1 fixture architecture
- 20,000 fixture lumens (white), 45,000 raw lumens total
- 110-degree ultra-wide beam angle for maximum coverage
- 48 x 10W white LEDs plus 108 x 3W blue LEDs
- HICOB (High-Intensity Chip-On-Board) array technology
- Switchable color modes plus fade, brightness, and two-speed strobe
- Compatible with SUPRA I-Connect Hub plus switch control
- Compatible MFD integration via SUPRA Bridge module
- Wi-Fi control from smartphone via SUPRA Bridge
- External driver architecture for smaller fixture footprint
- Flush-fit thru-hull mount, transom, side, or bottom installation
- Standard 1-inch fitting matches industry mounting kits
- 50,000+ hour LED rated life
- Three-year limited warranty
Why Buy from NVN Marine
- Authorized Lumishore reseller, full manufacturer warranty
- NMEA member and ABYC certified, advice from real boat techs
- Same-day shipping before 3 PM ET on in-stock items
- NY headquarters and Fort Lauderdale flagship retail store
Authorized Lumishore dealer. Same-day shipping from our warehouse on in-stock fixtures. Full Lumishore manufacturer warranty applies (three-year limited). We pre-verify hull thickness and through-hull clearance before shipping, the THX1604 needs the standard 1-inch fitting. Call us if you're spec'ing a larger SUPRA installation for a yacht where multiple fixtures are needed.
Technical specifications
| Title | Lumishore SUPRA THX1604 Thru-Hull Underwater Light with Driver |
|---|---|
| Manufacturer Part Number | 10 (Lumishore internal P/N) |
| UPC | 847772004146 |
| Brand | Lumishore |
| Model | SUPRA THX1604 |
| Series | SUPRA THX (external driver) |
| Color Architecture | Dual color (blue and white), 2-lights-in-1 |
| Raw Lumens | 45,000 |
| Fixture Lumens (White) | 20,000 |
| Beam Angle | 110 degrees ultra-wide |
| White LEDs | 48 x 10W |
| Blue LEDs | 108 x 3W |
| LED Array Type | HICOB (High-Intensity Chip-On-Board) |
| Driver Architecture | External |
| Control Modes | Color switch, fade, brightness, 2-speed strobe |
| Control Options | SUPRA I-Connect Hub + Switch, MFD via SUPRA Bridge, EOS-LUX-SUPRA Display, Wi-Fi |
| Fitting Size | Standard 1 inch |
| Mounting Positions | Transom, side hull, bottom |
| Profile | Flush-fit, low profile |
| LED Rated Life | 50,000+ hours |
| Warranty | Three-year limited |
Frequently asked questions
What's in the box?
The THX1604 fixture with its 110-degree optic, the matched external driver module, the through-hull mounting hardware, the gasket and seal kit, the fixture-to-driver cable, and the documentation pack. The SUPRA I-Connect Hub, the SUPRA switch, the SUPRA Bridge module (for MFD or Wi-Fi control), and the EOS-LUX-SUPRA dedicated display are all sold separately.
What does 2-lights-in-1 mean?
The fixture houses two separate LED arrays in a single housing: 48 white LEDs at 10W each (high-CRI white spotlight effect) and 108 blue LEDs at 3W each (saturated blue glow). The two arrays are independently controllable, switchable, dimmable, and can be faded between, which gives you the choice of bright white security/dock illumination or saturated blue aesthetic glow from a single thru-hull cutout.
What's the output and beam angle?
20,000 fixture lumens (white) out of 45,000 raw lumens total, through a 110-degree ultra-wide beam. The ultra-wide beam spreads the light over the maximum possible footprint, which is the right configuration for transom-mount installations on yachts where overlapping beams from two fixtures should cover the entire stern.
What's HICOB and why does it matter?
HICOB stands for High-Intensity Chip-On-Board. Multiple LED dies are packaged onto a single substrate with a shared optical system, which produces higher total flux at a smaller package size than conventional discrete-LED designs. Less optical loss, better thermal management, more lumens per fixture.
What's the difference between THX and TIX series?
THX has an external driver (driver electronics mounted separately inside the boat). TIX has an internal driver (driver electronics inside the fixture). THX advantages: smaller fixture, lower underwater thermal load, easier to service the driver if needed. TIX advantage: serviceability of the entire light from inside the hull without hauling. For larger yachts with dedicated electrical compartments, THX is typical.
What boat size is this sized for?
60-to-100+ foot yachts, typically. The 20,000-lumen output and 110-degree beam are sized to make a visible impression on yachts where lighting is part of the entertaining aesthetic. For smaller boats, look at lower-output SUPRA models or the EOS series TIX/THX lights.
How is it controlled?
Multiple control options. The SUPRA I-Connect Hub plus the SUPRA switch (dedicated Lumishore controller). A compatible multifunction display brand with built-in Lumishore control. The Lumishore EOS-LUX-SUPRA dedicated display. Wi-Fi from a phone via the SUPRA Bridge module. The SUPRA Bridge is required for any MFD or Wi-Fi control, with the I-Connect Hub plus switch as the baseline standalone control surface.
Can I have multiple THX1604s in one install?
Yes, this is the typical install for the boat sizes this fixture targets. The SUPRA control system supports multiple fixtures across multiple zones, with independent control of each fixture or grouped control of zones. The maximum count per install depends on the SUPRA controller spec and the DC bus capacity, contact Lumishore or your dealer for large-scale installations.
What's the LED rated life?
50,000+ hours. At 4 hours per night of average use, that's over 30 years before reaching the rated-life endpoint, which is well beyond typical fixture refresh cycles. The three-year limited warranty covers defects in materials and workmanship over the warranty period.
Is the driver weatherproof?
The driver mounts inside the boat in a relatively sheltered location (the typical install is in a dedicated electrical compartment or behind a panel near the transom). It's not designed for direct outdoor or saltwater exposure. The Lumishore install documentation specifies the right environment for driver mounting.
What's the through-hull fitting size?
Standard 1 inch. The THX1604 interfaces with standard 1-inch thru-hull mounting kits available from Lumishore and from most aftermarket through-hull suppliers, which simplifies the install in fiberglass, composite, or steel hulls.
What hull positions does it support?
Transom (most common), side hull, and bottom hull. The flush-fit mount is low-profile across all three positions and doesn't affect hull hydrodynamics at speed. The 110-degree ultra-wide beam works in all three positions, with the choice driven by where you want the underwater light effect concentrated.
