Differences between the GTR Lighting GEN 2 and GEN 3 LED Headlight Bulbs

In March 2015, GTR Lighting released the GEN 2 LED headlight bulbs which were the second LED headlight bulbs from GTR Lighting. (The first being released a year earlier.) These GEN 2 Bulbs were 1,000 lumen brighter and featured a unique color shield system to change the color of the light output. This new generation of LED headlight bulbs also created a beam pattern which was more usable and focused. These GEN 2 bulbs were widely received and we found them to work specifically well in the 14-17 Toyota Tundra. So when we began to hear rumors from GTR Lighting that they were releasing an even better generation we got excited! In this article, we’ll point out the differences between the GEN 2 and the newly released GTR Lighting GEN 3 LED Headlight Bulbs.

 

Before we dive into the specification differences, the first thing to point out is the body of the 3rd generation bulbs. Then GEN 3 bulb uses a fan-less design to cool the bulb. The original GEN 1 and GEN 2 bulbs used a fan in the base of the bulb to pull away heat and cool the bulb. The fan in the first generation model worked well enough to cool the bulb, but we’re excited for a new cooling system that does not involve a fan that may potentially fail. The GEN 3 LED Bulb uses a hollow base that allows for convection cooling and air movement through the base.

The other big difference is that the GEN 2 used an “All-In-One” style driver technology. However convenient this was, it increased the mounting depth required to run the bulbs. The new GEN 3 uses an external driver and sports a half-inch shorter heat sink which means it will fit way more applications than it’s predecessor!

Different LED Headlight bulb cooling options

The ability to change the color of the light output on the GEN 2 bulbs really was a unique feature that many owners loved. It’s also a feature you will not find in this newest 3rd generation of LED bulbs; the GEN 3 bulbs have an unchangeable 6,000K color. Although this color is beautiful, bright, and clean white, some owners may be disappointed in the single-color choice. When asked about the change GTR Lighting admitted that using a glass shield around the LEDs on the old bulbs increased operating temperature and may have led some models to premature failure.

But a difference between GEN 2 and GEN 3 that will not disappoint is light output. The GEN 2 bulbs had an advertised 3,600 Lumen output while the GEN 3 bulbs have a 3,700 Lumen output. “But that’s only a 100 lumen difference” you say. Correct, but let’s look at the lux numbers:

Beam Pattern testing with the GTR Lighting LED Headlight bulbs

This picture was taken at a distance of 25 feet with the stock halogen bulbs, GEN 2 LED, and GEN 3 LED bulbs all placed inside the same headlight housing. As you can see, the lux amount produced from the GEN 3 bulb is 1,000 lux more than from the GEN 2 bulb. Why is this important and what even is Lux? Well, let me explain.

Lumen is the amount of total light produced from a bulb. It’s true that the more lumen is produced the brighter a light is, but Lumen is only one factor in determining usable brightness. Lux is how usable light is determined. As you can see in these test shots, the GEN 2 bulb which has 3,600 lumen only produces 360 Lux and the GEN 3 bulb that has 3,700 lumen produces 1,360 lux. How can it create so much more lux with only 100 extra lumen? What’s the difference? Well, look closely at the beam pattern pictures. The GEN 3 bulb creates a beam pattern with a very distinct and very intense hotspot. As you look at the GEN 2 bulb beam pattern you’ll see that this hotspot is small and more dim. Lux is a measure of these hotspots. Lux is measured within the beam pattern at a distance of 25 feet and measures the amount of light that is actually being thrown from the headlight down the road. Let me put it this way, a bulb with high lumen amounts could be unfocused and produce low lux amounts as a result. On the other hand, a bulb with the same amount of lumen that is able to be focused well inside a headlight can produce very high Lux amounts. The major difference we see here in usable light output is not really a matter of Lumen, but a matter of precise focus and the resulting lux. A huge difference we’ve seen between the GEN 2 and the GEN 3 bulbs is the ability of the GEN 3 bulbs to create a better-focused beam pattern versus the GEN 2 bulbs. Here’s why:

LED chip technology has greatly improved since the early days of LED headlight bulbs. Take a look at the difference between the GTR Lighting GEN 2 and GEN 3 LED Headlight Bulb chips. The GEN 2 bulbs featured CREE XT-E LED Chips. The new GEN 3 bulbs feature Lumileds Luxeon Z ES Chips. These new Lumileds chips are much smaller and can actually be shaped into a configuration that more closely resembles the footprint of a standard halogen bulb. The design and layout of these new GEN 3 bulbs are what create a beam pattern more similar to a stock halogen bulb.

Different LED bulb LED chips and chip arrangements effecting output

GTR Lighting GEN 2 LED Headlight Bulb Specs:

  • 3,600 Lumens Low Beam / 4,500 Lumens High Beam Light Output Per Bulb
  • 40 Watts Low Beam / 80 Watts High Beam Energy Usage Per Bulb
  • LED Light Color Without Tint Shields: 5,000K
  • Optional Colors with Optional Tint Shields: 3,000K 4,300K 5,000K 6,000K 10,000K
  • Waterproof Ball-Bearing Fan for cooling
  • Eight USA Made CREE XML LED Chips per bulb
  • Smart and Efficient Cooling System uses Built-In Cooling Fan.
  • Total Consumption 160W. 80/40W per bulb

GTR Lighting GEN 3 LED Headlight Bulb Specs:

  • Raw Lumen Per Bulb: 3,700
  • Effective Lumen Per Bulb: 1,800
  • LED Color: 6,000K
  • Max Lux at 3 Meters: 5,000
  • Max Lux at 25 Feet: Depends on Vehicle
  • Lifespan: LED Chip Rated at 50,000 Hours
  • LEDs Used:
    -Single Beam Bulb, x6 Lumileds Luxeon Z ES Chips.
    -Dual Beam Bulb, x12 Lumileds Luxeon Z ES Chips.

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