Devine Concepts

Mobile Electronics Expert in Naples, Florida

BestCarAudio.com

OEM Sound System Measurements for Audio System Upgrades

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OEM Sound System MeasurementsUpgrading a factory audio system is not as easy as it used to be. In the late 1990s and early 2000s, connecting an amplifier and a new set of speakers to a factory source unit would yield impressive, if not amazing, results. As automobile manufacturers put more focus on the performance of factory-installed sound systems, digital signal processing (DSP) became more and more prevalent. Equalization and signal delay built into factory source units and amplifiers allow inexpensive speakers to sound acceptable. This tuning works well for such speakers, but not for a set of premium aftermarket speakers. In the past few years, it has become common practice for reputable mobile electronics retailers to perform a series of oem sound system measurements in a vehicle we haven’t worked on before to ensure we understand how the factory entertainment system functions. The results of the measurements will determine the best path to upgrading the performance of the audio system.

Measure Twice, Cut Once

What do we measure, you ask? We need to quantify three items before a system upgrade can be discussed.

OEM Sound System MeasurementsThe first is frequency response. We need to know if the signal coming from the factory radio or amplifier has been equalized or filtered in any way. Equalization can help improve the performance of inexpensive speakers and compensate for the acoustic characteristics of your vehicle.

The second is voltage. If you have a high-power factory amplifier, then the interface we choose for your system has to be able to handle all of the voltage the amp can produce. Not knowing how much voltage is present in the speaker wires can lead to a system design that distorts at high volumes. This distortion will damage speakers.

OEM Sound System MeasurementsThe last thing our shop will want to analyze is the type of signal present. In most cases, the output of the amplifier is a BTL (Bridge-Tied Load), though some are single-ended. There is no right or wrong type of signal, but the information is required to ensure that they will use the appropriate interface solution or amplifier.

Depending on the vehicle and complexity of the factory sound system, we may have to complete several other tests. Signal routing tests are critical, especially if there is a center channel in the vehicle. Chimes, navigation prompts, parking sensors, up-mixers, active noise cancellation and systems that inject “engine noises” into the audio path have to be taken into account before the system design is complete.

What if We Do Not Measure Your System?

Imagine that you want to improve the sound in your audio system. You go to a car stereo shop and buy an amp and a set of speakers, determined to install them yourself to save some money. Even worse, you want to try to save a few more bucks, so you buy the equipment online and have it shipped to your house. Saturday rolls around, and you tear into your vehicle. You run wires to the battery and try to connect to the factory amp. After an hour or two in forums or Facebook groups, you think you have finally connected to the right wires. When you turn the system on, it sounds dull and lifeless.

What happened?

Many factory amplifiers have dedicated outputs for tweeters and midrange drivers. Connecting to one or the other limits how much information goes to your new speakers. Working with an experienced mobile electronics retailer helps you eliminate situations like these. A retailer that doesn’t already have the information can measure the response of each channel of the factory source unit or amplifier and provide a way to manage work with that information.

OEM Sound System MeasurementsA more-typical result is that the high-frequency output from the new speakers is overwhelming. Many factory audio systems use a woofer in the door and a small midrange in the dash. These tweeterless factory systems require a moderate amount of high-frequency emphasis to sound acceptable. When you add a tweeter that can do a good job of reproducing these frequencies, the boost inherent to the system becomes overwhelming. You may be able to turn down the treble control on the radio, but it’s likely that the adjustment only compensates for the highest of frequencies, leaving you with an annoying frequency response bump around 4 or 5 kHz.

What We Do with the OEM Sound System Measurements

After the measurements are complete, our shop can recommend a solution to help ensure the success of your new system. If you luck out and have a simple factory source unit, you may only need a voltage adapter, commonly called a line output converter, to send an appropriate signal to your amplifier.

If a large amount of equalization is present from the factory amplifier, then an equalizer or digital signal processor may be adequate to compensate for the factory tuning. A calibrated microphone and audio analysis equipment is required to set up the new system. These devices are expensive, and it takes time to learn how to use them correctly to achieve acceptable results.

OEM Sound System Measurements
The AudioControl DM-810 can be used to tame factory signal problems.

If you have a factory amplifier that includes crossovers or time alignment, then your interface options narrow. Several system integration processors on the market can automatically undo equalization and time alignment, then recombine signals from the subwoofer, midbass, midrange and tweeter outputs. There are also integration modules that will replace your factory amplifier and provide connections that will feed a signal directly to your new amplifier. Unfortunately for the Do-It-Yourselfer, these amplifier replacement modules need to be programmed for the year, make, model and trim level of your vehicle. This configuration process is not something that you can do at home.

Inquiring Minds Want to Know

Performing OEM system measurements are like preparing to have a cavity filled. Before your dentist starts grinding or drilling, he or she will take a series of X-rays so that they know exactly what they are dealing with. The same philosophy applies to constructing a subwoofer enclosure. You’d never see someone start cutting wood without having measured the car accurately.

When it is time to upgrade your factory audio system, visit your local mobile electronics specialist retailer. Ask if they know how your factory audio system is configured in terms of signal processing. If they don’t know, find out whether they have the equipment to measure the factory audio signals in your vehicle. Once you are comfortable with their level of expertise, you can enjoy the process of designing a fantastic sound system for your vehicle. You will be thrilled with the results!

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.

Definitions: Speaker Parameters

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Speaker ParametersThe adage that someone could write a book about a subject certainly holds true when it comes to a discussion of loudspeakers and their parameters. In fact, there are dozens of great books already available about the subject. This article provides an overview of some of the most commonly discussed speaker parameters.

What are Speaker Parameters?

Speaker parameters, often called Thiele/Small parameters, are a set of electromechanical measurements that can be used to define the low-frequency performance of a transducer. Using these parameters and a series of calculations, your installer can predict the performance of that speaker in an enclosure.

What Can We Determine from these Parameters?

Speaker Parameters
T/S Parameters can be used to determine if speakers will work well in small enclosures.

Perhaps the most important set of calculations we can create is the output of the system. When we discuss the “system,” we are referring to the speaker itself and the enclosure in which we intend to install the speaker. Every speaker enclosure acts as a high-pass filter and reduces the low-frequency output of the driver. We gain physical power handling in return for this diminished output. Using a set of calculations, we can predict how much low-frequency information the system will produce.

Another important calculation is power handling. As mentioned, we need to control the movement of the speaker cone to prevent distortion and damage. We can predict how much the cone will move for a given amount of power in our test enclosure.

Resonant Frequency of the Speaker – Fs

In terms of analyzing the moving parts of the speaker, we need to know the frequency at which the compliance (springiness) of the spider and the surround combine with the mass of the cone and dust cap to store the most energy. At this frequency, the system alternately stores and subsequently releases the most energy for a given voltage input. If you were to swing a weight on a string suspended from the ceiling, the natural frequency at which it oscillates back and force would be equal to the resonant frequency of a loudspeaker.

Equivalent Compliance Volume – Vas

To understand how stiff the spider and the surround are, we compare them to an amount of air that would exert the same resistance to motion. Because air is easily compressed, a high Vas specification would represent a very softly suspended cone. Conversely, a speaker with a low Vas would have a very stiff suspension.

Electrical Q of the Driver at Fs – Qes

Speaker ParametersUnderstanding the Q (Quality Factor) can be somewhat difficult because it is a dimension-less value. In essence, the Q factor describes the damping characteristic of a resonant system. A higher Q represents less energy loss relative to the total energy stored in a system. A pendulum suspended from a low-friction bearing will have a high Q. That same pendulum, submerged in water, will have a much lower Q. An important consideration is that high-Q systems have less damping and, therefore, vibrate longer. The Electrical Q specification describes how much damping the voice coil and magnet assembly invoke on the moving cone.

As the voice coil moves past the magnet, it produces an electrical current. This current reaches its peak value at the resonant frequency of the driver and counteracts the current being provided by the amplifier. The net result is a significant rise in impedance at the resonant frequency.

Mechanical Q of the Driver at Fs – Qms

Just as the electrical characteristics of a speaker cause an opposition to cone motion, we have a similar effect from the mechanical properties of the speaker. Qms describes the mechanical losses resulting from the spider and the surround. A high Qms value describes lower mechanical losses, while a low Qms value describes higher losses.

Total System Q at Fs – Qts

This unit-less measurement is a mathematical combination of the mechanical and electrical characteristics of the speaker. In simple terms, we calculate Qts by dividing the total stored energy of the speaker by the dissipated energy in the speaker at resonance.

Compliance of the Driver Suspension – Cms

The Cms specification describes the stiffness of the driver suspension in meters per newton. A stiffer suspension will move less distance for a given amount of force applied to it.

Effective Cone Area of the Driver – Sd

Speaker ParametersThis parameter describes the effective “size” of our speaker. We all realize that the cone will move air for us, but we also have to take into account the addition of the surround. It is commonly accepted that we can use a value of half the surround as contributing to the output of the driver.

Mass of the Cone and Moving Parts – Mms

The Mms specification describes the mass of the speaker cone and part of the spider and surround. Unlike the Mmd specification, Mms includes the acoustic load caused by the air in contact with the cone. In most cases, the values are similar, but as the surface area of the cone increases, so too does the value of Mms, relative to Mmd.

Maximum Excursion Level – Xmax

This parameter is frequently misinterpreted as being the defining factor in the distance a speaker cone can move. Early calculations used a formula that subtracted the height of the voice coil winding from the height of the magnetic gap, then divided by 2. This calculation describes how far the speaker can move before the winding comes out of the gap.

Subsequent investigation shows that non-linear behavior elsewhere in the driver design could have a larger influence on the motion limits of the cone. This suggests that Xmax should be the one-way excursion distance that represents a distortion level of 10%. This performance-oriented specification is far more indicative of the useful operating range of a driver, but is much harder to ascertain.

Additional Parameters

Speaker ParametersIn this article, we only describe the basic parameters that are commonly used in predicting the low-frequency performance of a loudspeaker. Other parameters, such as inductance, become more relevant at higher frequencies. Addition parameters such as Nominal Impedance (Znom), efficiency, sensitivity and the Efficiency Bandwidth Product (EBF) are derived through equations that use the specifications above.

Proper Design Requires Simulation

A woofer in an over-sized enclosure may bottom out and be damaged easily. A midrange driver crammed into a small speaker pod may have a significant frequency response spike and an associated distortion peak. The result is quite unfavorable.

Before you assume a subwoofer or speaker is suitable for the enclosure or mounting location you have chosen, it is worth asking your mobile electronics retailer to perform a simulation to ensure everything will function the way you want. They can work with you to ensure everything will perform optimally, and your system will sound great!

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.

Don’t Suffer with Slow Smartphone Vehicle Control Solutions

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Smartphone Vehicle Control

If you’ve been in the market for a new car, truck or SUV recently, you’ve likely encountered the convenience of smartphone control options. These features allow you to perform tasks like locking the doors or starting the vehicle remotely from your smartphone. However, the reality is that many of these factory-installed systems can be frustratingly slow – a common pain point for many of us. You’re not alone in this: A member of our team has two brand-new vehicles in their driveway, both with comparatively sluggish smartphone control systems. Let’s delve into how these systems function, why they’re slow and, most importantly, what solutions can alleviate this frustration.

What Is a Smartphone Control System?

It should come as no surprise that computers control modern cars and trucks. Decades ago, a fuel-injected vehicle might have had a computer to control the spark plugs and fuel injectors. Today, everything from the headlights and infotainment system to the suspension, collision-avoidance systems and engine is controlled by computers. These computers are typically linked through a network data bus. In the not-so-distant future, vehicles will be able to communicate with each other, opening up a world of possibilities. The intention is to reduce accidents and traffic congestion using machine-learning software and your vehicle’s real-time location. These are called vehicle-to-vehicle systems, or V2V for short.

The benefit of linking all the features and systems in a car or truck is that one can respond to another. For example, some luxury vehicles will lower the air conditioning or heater fan speed to make using Bluetooth hands-free calling easier. Some advanced collision-avoidance systems produce warning sounds through different speakers in the vehicle, depending on where an object is. A turn-signal activation might trigger the infotainment system to display the image from a camera on the side of the car. A parking sensor on the vehicle’s rear might apply the brakes to prevent a collision.

We love the simplicity and ease of troubleshooting electrical systems that use mechanical switches and relays. However, the benefits of computer control can’t be denied.

Smartphone Vehicle Control
The ability of the multitude of computers in a vehicle to communicate with each other improves convenience and safety.

Smartphone Control Integration

So, how can an app on a smartphone communicate with the computers in your car or truck? It uses cell phone towers and cellular radios or modems. Unlike an old cell phone optimized exclusively to transmit and receive voice information, modern cellular radio modules are just as good at sending massive amounts of data. Those of us who like to watch YouTube on our phones understand this. Essentially, the phone acts like a modem connected to our home’s cable or phone service provider. However, rather than a wired connection, the information is broadcast over the air to a nearby cell phone tower. From there, it’s on the internet, and you can reach whatever server and website you want.

Most new cars and trucks include a cellular data radio to communicate with a centralized server to provide vehicle information. This connectivity allows commands from the app on your smartphone to be relayed to the vehicle and vice versa.

Say you want to use your smartphone to make sure your truck’s doors are locked before you go to bed. You launch the app on your phone, then press the lock button. The app will send a message, along with your username and password, to a server operated by the vehicle manufacturer or a third-party company contracted to provide the telematics service. The message is already on the internet if connected to your home Wi-Fi. If you aren’t home and are using a cellular data connection, the message is sent to the cell phone tower, which then passes it along to the cell phone provider’s connection to the internet.

After the server has authenticated the message, a new message with the command is sent to your vehicle. This message travels through the internet to the cell phone service provider tied to your car. From there, the message goes to a cell tower near your vehicle. The message is broadcast digitally to the cellular radio in your car. That radio will recognize the command and send a digital message to the body control module to lock the doors.

Once locked, the process reverses. The vehicle confirms that the door lock request has been executed and returns that confirmation to the smartphone app along the same path.

These messages might travel the entire length of a state or province or even across the country to authenticate and execute commands. It is truly fascinating that any of this can happen in a reasonable amount of time.

Smartphone Vehicle Control
Commands from your smartphone app use the cellular data network to communicate with your vehicle.

Benefits of Smartphone Vehicle Control

Having smartphone control of some of your vehicle’s features is extremely convenient. For example, being able to check to make sure the vehicle is locked from your home or office is excellent. With that said, this isn’t a time-sensitive process from the perspective of waiting for the information. However, if you’re walking out of a store or your home and you want to pop the trunk or open the hatch, it would be nice if that were done by the time you got to the car. The same goes for unlocking the vehicle. Sure, most vehicles with smartphone apps also have keyless entry systems. Nevertheless, the app should work fast enough that you are never waiting.

In reality, the choice of cellular data providers and the companies that host the authentication services plays a considerable role in determining the time it takes for your vehicle to respond to commands. If Mazda wanted to reduce operational costs on the MyMazda service, they could select a less expensive, lower-priority service from the cellular data provider. We’ve seen smartphone control systems that take more than a minute and others under two seconds. That’s a significant difference.

Testing Smartphone Apps on Modern Vehicles

We’ll examine smartphone app responsiveness with the MyNissan app and a 2023 Nissan Rogue. After the vehicle had been sitting idle for a few hours, we sent an unlock command from the smartphone. It took 10.8 seconds for the vehicle to respond. We followed this by sending a lock command. That took 3.7 seconds.

Next, we have the MyMazda app and a 2025 Mazda CX-70 PHEV. The test criteria are the same. The vehicle has been sitting idle for several hours. The delay between sending the unlock command and the vehicle responding was 16.6 seconds. The delay to relock the vehicle was 4.7 seconds.

As you can see, sending a second command is much faster. We hypothesize that some of the account authentication processes on the server have already been completed, and your information is now in the cache rather than buried on a storage device.

One MyMazda function regularly used on the Mazda is checking the battery charge status. Oddly, this process takes an abnormally long time – we measured 31 seconds. It’s faster than walking to the vehicle, but not much.

To put these wait times into perspective, the average adult walks about 17 meters or almost 56 feet in 17 seconds. If you are leaving a store and want to remote-start the vehicle, you might be halfway across the parking lot before it gets the start command.

Drone Response Time

Let’s compare this response time to an aftermarket vehicle control solution like Drone from Firstech. You should be familiar with Firstech, which manufactures Compustar remote car starters and Momento dashcams. Sending an unlock command to a vehicle requires less than two seconds. The lock command was executed in under two seconds. We’ve seen a few instances where, just like the OE systems, the first request takes a bit longer than the subsequent, but they are always a fraction of what the OE systems we’ve tested provide.

When the Drone updates, it also provides battery voltage and the temperature inside the vehicle. All of that takes only 2 seconds.

Smartphone Vehicle Control
Smartphone vehicle control solutions like Drone from Firstech provide nearly instant responses to commands.

What about Bluetooth Control?

Some OE and aftermarket smartphone control solutions can communicate with your vehicle using a Bluetooth data connection. Tesla uses this technology in many of its vehicles. Once in range, your smartphone will connect to the vehicle using Bluetooth, and pressing a button in the app will result in a near-instantaneous response from the vehicle. The drawback here is range. Bluetooth might work up to 100 feet under absolutely ideal conditions. This will work as an entry authentication solution but not for something like a remote starter when you are far away.

Shopping for Smartphone Control Solutions

If you want to be able to control and monitor your car, truck or SUV from anywhere in the world where you can access the internet, visit a specialty mobile enhancement retailer and ask them about the solutions they offer.

Before committing to purchasing anything, ask for a real-life demonstration. How long does it take for the vehicle to respond to commands from the phone? Is it a second or two, or slow? Next, ask what functions the system can control in your vehicle. We would expect that door locks are a minimum and that you will likely add this control system to a remote car starter. Beyond that, you may have the option of automatic rear window defroster, heated seat and heated steering wheel activation if your vehicle has those features. Hatch or trunk release is another popular feature, along with sliding door control on minivans.

These days, we need to do everything in our power to keep our vehicles safe. Ask if the control system has geofencing options and if it will provide towing alerts. Find out if you can upgrade the system with a security sensor to monitor for impacts, motion, tilting or glass breakage. Advanced security features are never offered on factory-installed smartphone control systems.

Smartphone Vehicle Control
Ensure that the solution you choose can provide security alerts to help keep your vehicle safe.

Once you have a clear image of the options available, you can choose those that meet your needs. Of course, features and pricing aren’t all that matter when selecting a shop to upgrade your vehicle. Do your research to make sure that the technicians working on your car or truck are appropriately trained, use reliable connection methods and pay attention to the details when integrating the system into your vehicle. Look to see if the shop uses seat, steering wheel and fender covers while working on the vehicle. Find out if they put the vehicle battery on a charger to keep it topped up while they have the doors open. All these small items seem simple, but they are signs that the shop you are researching cares about their work and your car or truck.

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.

Revisiting the Rockford Fosgate R2-1200X1 Test Drive Review

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R2-1200X1 Test

In late October 2023, we had the opportunity to give the Rockford Fosgate R2-1200X1 subwoofer amplifier a thorough Test Drive Review (https://www.bestcaraudio.com/test-drive-review-rockford-fosgate-r2-1200×1/). We were very impressed that this entry-level amp had features and performance that dramatically outperformed entry-level and mid-level products from other brands.

Power Testing and the Importance of Supply Voltage

The original test had one hiccup. When running a 1-ohm load, the amp produced 1,155.3 watts, which is a few watts (44.7) shy of the rated 1,200 watts the amp should produce.

Why did this happen? Is the R2-1200X1 not a real 1,200-watt amplifier? The answer lies in the power supplies we used to feed the amplifier. The supplies, a pair of Stinger SPS80 units, don’t have an output voltage adjustment. We’ve used their high- and low-voltage settings to show how different amplifiers perform at different supply voltage levels. The problem is, amplifiers tested to the ANSI/CTA-2006-D specification must be supplied with 14.4 volts. We only fed the R2-1200X1 13.61 volts. So, making just 44 watts shy of the rating, with 0.79 volt less than is expected, is actually impressive.

We typically explain that minute differences in output power are inaudible. The difference in output level between 1,155.2 and 1,200 watts is only 0.16 dB. You can’t hear that difference. Nevertheless, car audio enthusiasts want to see the largest numbers possible regarding power ratings … for some reason.

R2-1200X1 Test

New Power Supplies Fix Everything

After months of research, we have purchased two new 100-amp, 15-volt power supplies for the BestCarAudio.com test bench. The new supplies have an adjustable output, so we can fine-tune them to produce precisely 14.4 volts to ensure that the measurements we provide fully comply with the ANSI/CTA-2006-D specification. We use our QuantAsylum QA403 audio analyzer to measure harmonic distortion and noise and adjust the output level to be within a tenth of 1% THD+N.

Repeating the Rockford Fosgate R2-1200X1 Test

With the new supplies wired up and a few wires re-terminated, it was time to repeat the power measurements. As you can see from the chart below, the impressive R2-1200X1 does indeed produce every bit of power that Rockford Fosgate claims – and more. If you’ve been paying attention to the other products we’ve tested from them, that should be no surprise.

R2-1200X1 Test

We picked up 27.3 watts at 4 ohms, 36.5 watts at 2 ohms and an impressive 109.9 watts when driving a 1-ohm load.

Distortion Versus Output Graphs

While the amp was back on the bench, we generated THD+N versus power output graphs for each load. The graphs show total harmonic distortion and noise on the vertical scale and power output on the horizontal scale.

R2-1200X1 Test

R2-1200X1 Test

R2-1200X1 Test

Different amplifier designs have different characteristics regarding how they add harmonic distortion to the signal. The R2-1200X1 behaves well, with moderate THD+N increases as output levels rise. There’s nothing bad or unexpected in any of the measurements.

Why Does More Power Supply Voltage Increase Maximum Power Output?

Before we close, we should discuss why increasing the supply voltage increases an amplifier’s maximum power. In the case of this amp, the power supply is unregulated – or, at the very least, loosely regulated. In terms of practical explanation, the voltage supplied to the amp is multiplied by a fixed amount to create the rail voltages that drive the output.

If we had to guess, the R2-1200X2 takes the supply voltage and multiplies it by roughly 2.25. This gives us positive and negative rail voltages of approximately +32V and -32V. The audio signal can swing between these voltages, giving us just over 44.3 volts RMS available to drive the subwoofer. At 4 ohms, that’s just under 500 watts.

At lower impedances, the limiting factor in how much power the amp can produce is the power supply’s current delivery capabilities. We measured 41.4 volts into a 2-ohm load and 35.57 volts into a 1-ohm load. Once again, this is entirely normal behavior for a high-quality amplifier.

Check out the R2-1200X1 for Your Car Audio Subwoofers

If you’re shopping for an affordable subwoofer amplifier that sounds good, offers fantastic efficiency and includes all the features you need to make your car audio system sound great, drop by a local authorized Rockford Fosgate retailer and check out the R2-1200X1. Be sure to tell them the gang from BestCarAudio.com sent you!

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.

The Benefits of Custom-installed Radar Detectors

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Custom-installed RadarIf you are looking for the best defense against police laser and radar guns, speed cameras, and radar-based work zone speed detection systems, then a custom-installed radar detector and laser countermeasure system is the only choice. This article compares the features and performance benefits of a portable radar detection system to one that we integrate into your vehicle.

What is a Radar Detector?

Simply put, a radar detector is a device that includes one or more radio frequency receivers and a computer. The receiver is designed to focus on specific frequencies and report the presence of those signals to the vehicle operator. The goal of the system is to detect radar measurement signals used on vehicles in front of you and provide enough warning so you can slow down to a legal speed and avoid getting a ticket.

Law enforcement agencies in North America use three radar frequencies. X-band operates between 10.5 and 10.55 GHz, K-band operates between 24.05 and 24.25 GHz, and Ka-band operates between 33.4 and 36 GHz.

Why Custom-installed Radar Systems Offer Better Protection

Custom-installed Radar
This front-mount Escort radar receiver offers much higher sensitivity than portable units.

When comparing portable radar detectors to custom-installed systems, the biggest performance benefit comes from the ability to make the radar receiver larger. As with any antenna, more size means more sensitivity. The radar receiver included with a custom-installed detector is typically bigger than an entire portable radar detection device. In AM/FM antennae, a half-wave antenna offers more than twice the sensitivity of a quarter-wave antenna. The benefit to you is that a custom-installed radar detection system can detect weaker signals and provide an earlier warning so you can slow down sooner.

Some systems include separate receivers and amplifiers for the low-frequency X-band and the higher K- and Ka-bands. This configuration allows each antenna to be more sensitive within its specified operating range and requires less signal filtering and amplification.

Many radar systems that integrate with your vehicle include a second high-sensitivity detector for the rear of the car or truck. Many police forces use dash-mounted radar systems that function while the police vehicle is in motion. If an officer is following you, you will want to know if he or she is measuring your vehicle’s speed.

Police Laser and Lidar Systems

Custom-installed RadarMany law enforcement agencies now use laser-based measurement systems. These devices send out a very narrow beam of invisible “light” that pulses in a particular pattern. The laser gun measures how that beam is reflected to calculate the speed of the vehicle it is measuring. The laser works with incredible accuracy. High-quality laser speed detection systems have a beam width of only 30 inches at a range of 1,000 feet and can operate up to 6,000 feet away. They are accurate to within 1 mph and can acquire a reading in as little as 0.33 seconds.

Laser detection systems look for energy between 830 and 945 nanometers and report it to the driver. The problem with laser speed detection is that once the officer has pulled the trigger, he has an accurate reading of your speed. There isn’t any point in slowing down.

Laser Detection versus Laser Defense Systems

A premium portable radar and laser detector that mounts to your windshield can alert you to the use of laser speed measurement. As we mentioned, though, once the officer has a reading, it is too late. Your only hope of avoiding a ticket is to detect beam scatter from another vehicle, then slow down before the police measure your speed.

Custom-installed Radar
Automods mounted these laser shifters close to the license plate for maximum effectiveness.

The number one benefit of a remote mounted detection system is its ability to combat laser or lidar systems. In a laser countermeasure system, there are several compact transceivers mounted near your license plate and headlights – the most frequent target for police radar. When these sensors detect a laser measurement signal, they instantly start to transmit a signal to confuse the radar gun.

The second issue with portable radar and laser detection systems is location. As we mentioned, police target your license plate and headlights because these are reflective, in hopes of getting an accurate reading at long distances. Your portable detector, mounted up high on your windshield, may offer excellent radar detection range, but can miss laser signals altogether due to that height.

Some custom installed radar detectors include laser functionality, and some provide it as an option. Talk to your retailer to ensure you are getting the protection you want.

How to Use a Laser Defense System

If a police officer targets your vehicle with his laser gun and pulls the trigger, he will be expecting a result almost instantly. If your laser defense system prevents him from getting a reading, the officer will quickly realize you are using a countermeasure system. To prevent him from following you for the next 10 miles or until you do something wrong, there is a suggested etiquette to using laser defense.

Custom-installed RadarAs soon as your laser detection system alerts you to the use of a radar gun, slow down quickly. Obviously, slamming on the brakes will attract attention. Smooth and steady deceleration is the ideal. As soon as you are at a legal speed, cancel the laser countermeasure system and let the officer take a reading. If that is executed smoothly, the officer will leave you alone and move on to measuring the vehicle behind you.

The only defense against police laser/lidar is a custom-installed laser countermeasure system.

Reduce the Clutter

Custom-installed Radar
The two small LED lights between the gauges alert the driver of threats.

If you are like us, then you hate clutter in your vehicle. There are some nice mounting brackets for portable radar detections, but they still detract from the appearance of your vehicle. Depending on the brand of custom-installed radar detection systems, there may be a small control panel that we can mold into your dash or center console, or no visible control panel at all. In these “invisible” systems, all of the alerts are handled with audible warnings and a pair of small LEDs. Eliminating connections to your cigarette lighter plug and suction cup marks on your windshield keeps your vehicle looking organized and tidy.

From a safety perspective, having a radar detector on your windshield will block some of your vision. The percentage of windshield area that a portable radar detector takes up is small, but every square inch counts when it comes to safe driving.

Protection against Theft

Dash and windshield mounted radar detectors are prime targets for thieves. The complexity and distributed design of custom-installed radar detectors make them too much hassle to steal. Even if thieves were to break into your vehicle, they would only be able to get a few parts of the system. The result is that there is no resale value, so they leave these systems alone.

Complete Vehicle Integration

Custom-installed Radar
Automods uses best-practices in their radar and laser installations.

Depending on the features and complexity of a remote-mount radar detector system, there could be as few as three components, or more than a dozen modules and sensors. We mount each component in a location that ensures reliable operation and protection against damage. We route the system wiring with factory harnesses and protect it with split loom or cloth tape – whichever best matches the OEM style of your vehicle. We make the electrical connections mechanically and electrically secure so they will function flawlessly for years.

When we install a radar detector and laser defense system in your vehicle, it becomes an integral part of your car or truck. You will never forget to bring it with you. You will never forget to turn it on. It is always ready to protect you.

Visit Your Local Mobile Enhancement Retailer Today

If you are looking for the best defense against police laser/lidar and radar guns, the only choice is a custom-installed radar detector system. Most systems are nearly invisible once installed, and the laser shifter/defuser modules can be integrated into your vehicle cosmetics beautifully. Visit your local mobile enhancement retailer today to discuss the options for your vehicle.

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