Upgrading the headlight bulbs in your car or truck can dramatically improve your safety and the safety of other drivers, pedestrians and cyclists. Your local mobile enhancement retailer may offer high-quality HID or LED bulb upgrade kits in a variety of color temperature options. These colors typically vary from 3,000 to 12,000 K. The question is, what do these color ratings mean and how do the numbers affect useful light output and style? Keep reading to find out.
What Does Headlight Bulb Color Temperature Mean?
Bulb color temperature, or more accurately, correlated color temperature describes the spectrum of energy released by a light bulb and is rated in kelvins. In the simplest of terms, color temperature is related to the physical temperature of the light source, and correlated color temperature is an equivalent spectral description for HID and LED bulbs.
Let’s consider a standard incandescent light bulb as an example. When a small amount of voltage is applied, the filament will glow with a dull red appearance. When supplied with its full rated voltage, the filament temperature increases and the energy output is whiter. The same happens as you heat a metal like steel. It glows red, then orange, yellow and white as you increase its physical temperature.
To give you an idea of how color temperature numbers work, a match flame has a color temp of approximately 1700 K, a standard residential incandescent lamp is around 2400 K, cool white fluorescent lamps are around 5000 K, and vertical daylight (when the sun is directly above you) is around 5700 K. Calculating color temperature gets complicated quickly and in most cases, the labels on the packaging of the bulbs you choose are rough estimates that give you an idea of whether the bulbs are on the yellow (3500 K), white (6000 K) or blue (9000 K) ends of the spectrum.
Headlight Bulb Light Output
The standard measurement for light output is the lux or lumen. The term lux describes how much illumination is produced by a light source at a given distance. It stands to reason that any lux rating should include a distance at which the measurement was taken. If you are browsing a LED light bar website, you will often see lux ratings taken at a distance of 10 meters. The often-misused term lumen describes the total light available from a light source. In most cases, these measurements need to be performed in laboratory conditions and more importantly, for consumers, the information typically applies to a bulb design, rather than the effective illumination ability down the road.
Color Temperature versus Light Output
Is there a direct correlation between the color of light that a bulb assembly produces and how much usable light is put on the road? When aftermarket HID kits started to gain popularity, light output was inversely proportional to color temperature. This relationship means that a yellowish to white bulb produces more light than a white to bluish bulb. The reality is that there are so many variables among bulb designs and suppliers that an accurate comparison is nearly impossible. That said, here is a real-world example we found on one headlight retrofitter supply website:
| Color Temperature | Description | Bulb Output |
| 4500 K | Warm White | ~3500 lumens |
| 5500 K | Pure White | ~3400 lumens |
| 6500 K | Cool White | ~3200 lumens |
What Headlight Bulb Color Is Best?
Our eyes react very differently to different light colors. Blue to purple light has shorter wavelengths than orange and yellow light and can cause eye fatigue. If you wear glasses, you may have seen “computer user” coatings with a brownish tint. This brown tint reduces how much blue light is passed and can ease eye strain.
Most factory-installed lighting systems use bulbs with a color temperature in the 5000 to 5500 K range. This temperature strikes an excellent balance between light output and appearance. The bulbs look MUCH whiter than any clear halogen design.
As a note, certain jurisdictions have very specific laws about headlight colors. Be sure to find out what is legal in your area before choosing something that varies too far from pure white.
Upgrade Your Headlights for Improved Safety
Ensuring that you can see safely down the road is crucial to your safety while driving. Upgrading your headlights with new bulbs is an easy and relatively inexpensive way to increase the distance you can see ahead of you. Your local mobile enhancement retailer can help you choose an LED or HID upgrade solution and color that will offer added performance and cool looks!
This article is written and produced by the team at www.BestCarAudio.com. Reproduction or use of any kind is prohibited without the express written permission of 1sixty8 media.
If you are an avid car audio enthusiast, it’s likely that you’ve seen photos of or heard systems that use high-efficiency pro audio style speakers. These drivers were designed for PA systems at concerts and can produce impressive output levels with moderate levels of power from an amp. In this article, we are going to look at the benefits and drawbacks of using pro-sound speakers in applications like a 
Before we dive into the differences between conventional car audio speakers and high-efficiency speakers, let’s take a quick look at the definition of speaker efficiency and what design features change this value.
Several technical design details determine speaker efficiency. One of the biggest factors is the weight of the cone and voice coil assembly. A lightweight cone assembly is easier to move and typically produces more output with less power. The drawback of this low-mass design is that the resonant frequency of the speaker will be higher and the driver won’t produce anywhere as much bass. This is the basic trade-off between conventional car audio speakers and pro-sound drivers.
Let’s compare two popular 6.5-inch woofers, both intended for 
If you have plans to add a dedicated woofer to the saddlebag or trunk on your bike, and can find one that will play up to 150 or 200 Hz without significant distorting, then pro-style high-efficiency speakers may be a good option if all that matters is how loudly the system will play.
Automakers constantly strive to make new cars, trucks and SUVs as safe as possible. The design and materials used in new vehicle chassis make them stronger, more rigid and safer than ever before. Technologies like backup cameras, blind spot monitoring, active lane keep assist, multi-view camera systems, rear cross traffic alerts and autonomous braking dramatically reduce the chance of having an accident. Up until only a few years ago, you had to buy all of these technologies that are now already on your new vehicle. Thankfully, your local mobile enhancement retailer can now retrofit some of these 
The simplest of safety systems is a 
Aftermarket blind spot monitoring systems are just entering their second generation. These systems include a pair of radar sensors that are mounted behind the rear bumper cover to monitor the space on either side of your vehicle for another car or truck. The exact function of these systems varies from one brand to another. Make sure that the solution you choose can detect a vehicle that has entered your blind spot from the side or that you have passed. Many will only alert you if the vehicle enters your blind spot from the rear.
Most of the radar-based blind spot monitoring systems on the market switch to a rear cross traffic alert system when you are backing up. These systems extend the radar signal to as much as 100 feet on either side of your vehicle to watch for oncoming cars or trucks. When they detect something, the same LED indicators that warn you about a vehicle in your blind spot will flash to let you know what side the vehicle is approaching from. Many systems include an audible alarm to make sure you know something is approaching.
Though still in their infancy in the aftermarket, “surround view” camera solutions are offered by several companies. This technology uses four cameras mounted around your vehicle to create a virtual aerial view of your car or truck. The camera image is akin to looking down at your vehicle from about 30 feet above the roof. You can see parking lines, curbs and the presence of other vehicle or obstacles.
Aftermarket safety systems that will apply your brakes or move the steering wheel are not currently available. Those technologies require careful calibration that is specific to each application. One technology that is available is a forward-facing collision warning system. MobileEye is the company responsible for the original autopilot technology used on Tesla vehicles. They offer several aftermarket solutions that use a camera and an advanced image processing computer to warn the driver if someone is approaching from the side or if he or she is approaching a stopped vehicle too quickly. A small display on the dash provides visual alerts to give you extra time to slow down.
Though not a 
