How Many Diodes Does Each Permanent Light Puck Have?

The number and type of diodes inside each light puck determines everything about colour quality, white accuracy, and brightness. It is one of the most important specs in permanent outdoor lighting and one of the most commonly misunderstood.

This guide explains how many diodes are in each GOULY Gen 3 puck, what RGBW actually means, why the dedicated white channel is a significant advantage, and how the diode configuration produces 16 million+ colours with clean, accurate white light.

What is inside a GOULY Gen 3 puck?

Each GOULY Gen 3 LED puck contains an RGBW diode configuration. That means every single puck has four distinct LED channels:

• R — Red
• G — Green
• B — Blue
• W — Dedicated White

These four channels are independently controllable through the GOULY app, which means each puck can produce any combination of those four outputs simultaneously. The result is a system that can display over 16 million colour combinations plus a full range of clean white tones from warm to cool.

What each channel does

Understanding the four channels helps explain why RGBW is so much more capable than older RGB systems.

Red (R)

The red channel produces warm, saturated red light. It is essential for warm colour mixing, autumn tones, holiday reds, and blending with the other channels to create orange, amber, magenta, and warm white tones.

Green (G)

The green channel covers a broad part of the visible spectrum. It is critical for producing yellows (mixed with red), cyans (mixed with blue), and a wide range of natural tones. Green is also the channel the human eye is most sensitive to, which means it has a strong impact on perceived brightness.

Blue (B)

The blue channel produces cool, saturated blue light. Combined with red it creates purples and magentas. Combined with green it creates teals and cyans. Blue is also key to producing cool white tones when blended with the white channel.

Dedicated White (W)

This is where the GOULY Gen 3 puck separates itself from cheaper systems. The dedicated white diode produces clean, true white light without any colour mixing required. This channel is purpose-built to deliver accurate colour temperatures in the warm white (2700K-3000K) and cool white (4000K-5000K) range.

Why the dedicated white channel matters

This is the single most important distinction between RGBW and RGB-only systems. Here is why.

An RGB-only system has no white diode. To produce white light, it has to mix red, green, and blue at full power simultaneously. In theory, mixing those three primary colours should produce white. In practice, it produces a washed-out, slightly tinted light that most homeowners describe as pinkish, bluish, or just "off."

The reason is physics. The wavelength peaks of red, green, and blue LEDs do not perfectly combine to produce the broad, even spectrum that the human eye perceives as clean white. There are gaps in the spectrum that the eye notices, even if the viewer cannot articulate exactly why it looks wrong.

An RGBW system solves this completely. When you want white light, the system uses the dedicated W channel, which produces a broad-spectrum white from a purpose-built phosphor-coated diode. The result is clean, accurate, and visually identical to a high-quality traditional white LED.

For a deeper comparison of warm and cool white output, see our warm white vs cool white LED guide.

How 16 million colours are produced

The 16 million+ figure comes from the independent control of each channel at 256 brightness levels (8-bit control per channel).

With four channels, the math is: 256 x 256 x 256 x 256 = over 4.2 billion theoretical combinations. The commonly cited 16 million figure comes from the RGB portion alone (256^3), but the addition of the white channel actually expands the range further, particularly in the pastel, tinted-white, and subtle tone areas that RGB alone cannot reach.

In practical terms, this means:

• every holiday colour you can imagine, from deep crimson to soft lavender
• sports team colours matched precisely
• subtle seasonal tones for Halloween, Easter, Canada Day, and more
• warm amber for everyday curb appeal
• clean whites at any colour temperature

All of it controlled per-puck, per-zone, or whole-home from the GOULY app, with 1,000+ pre-built designs and full animation support.

Why diode count and type should be on your comparison list

When evaluating permanent lighting systems, the diode configuration inside each puck tells you more about real-world performance than almost any other spec. Ask:

• Does each puck have a dedicated white channel, or is it RGB only?
• How many independent channels are controllable per puck?
• Can the system produce clean warm white for daily use without colour cast?
• Is white brightness driven by a dedicated diode or by colour mixing?

A system that cannot produce clean white light is a system that will disappoint homeowners who want simple, beautiful warm white curb appeal most nights of the year. Colour shows are fun, but everyday white is where the puck quality shows.

The bottom line

Each GOULY Gen 3 puck contains a full RGBW diode array with independently controllable Red, Green, Blue, and dedicated White channels. The dedicated white diode produces clean, accurate white light that RGB-only systems simply cannot match. Combined with 16 million+ colour options and app-based control, it is a system built for both everyday elegance and full-colour celebrations.

To see the full hardware breakdown, visit The System. To see what these colours look like on real homes, check the gallery.