BestCarAudio.com, Author at Auto Acoustics

How Radar Detectors Have Changed Over the Years

If, like us, you have been a car enthusiast for any significant amount of time, you are sure to remember the magazine ads for the windshield-mount Escort radar detectors in the 1980s. They were, relatively speaking, gigantic. The front panel had a large analog signal strength meter and that ubiquitous orange incandescent warning light bulb on the right side. There were only two adjustments: a volume control and a city vs. highway selection switch. They must have done their job, though – after all, Car and Driver, Autoweek, and several adult magazines all gave them glowing reviews! How’s that for marketing to a specific gender?

The radar detector industry in North America is massive. Countless radar detectors are purchased each year, and millions of dollars in potential speeding tickets are averted. The radar detector industry has come a long way and will continue to evolve. This article provides a brief overview of where the industry has come from and where it is going.

Police Radar Gun History

According to our research, the first radar-based automobile speed measurement systems were put into use in the late ’40s. These massive systems used vacuum tubes and strip charts to log information.

It was the Connecticut State Police that led the charge to adopt radar speed measurement. After testing for a few years, they started issuing speed tickets based on radar measurements in February of 1949. Garden City, New York, was in pace with the Glastonbury police in the quest for more-efficient ways to catch speeders and start issuing tickets as a source of revenue.

Early radar systems operated in the S-band at 2.455 GHz. Unfortunately, these early systems were only accurate to within a few miles per hour and, worse yet, had a range of 150 to 500 feet.

History of Radar Detectors

There are varying claims to the first radar detector. One unit, the Radar Sentry, which was built in Tonawanda, New York, was one of the first commercially available units. The Radar Sentry appeared on the market in 1961 and sold for just under $40. A pair of AA batteries powered it, and the instructions suggested that clipping it to your vehicle’s sun visor worked well as an installation location.

Another early detector, and one that some articles have (perhaps mistakenly) credited as the first, was the Fuzzbuster. Dale Smith, an electronics wizard, decided to design a radar detector after getting a speeding ticket. He felt the ticket was unjust, so he set out to design a device that would detect when the police were using Doppler radar guns to measure vehicle speed. The result was that Smith invented the Fuzzbuster. If you thought two controls on the Escort was fancy, then the Fuzzbuster was the meat and potatoes: A squelch control and a warning light were all you saw. Nothing more. Watch out, Smokey! We can see you!

An Unfair Advantage

As the popularity of radar detectors grew, it is no doubt that police forces across the nation became frustrated that their enforcement tools had become less and less effective. Around the year 2000, two products entered the market to crack down on radar detector use in states and provinces where it was banned: the Spectre and the VG-2 Radar Detector. These products were designed to pick up the leaked radio frequency radiation from radar detectors and alert police. When combined with bans on radar detectors in some states and Canadian provinces, the police had the edge again – for a while.

The logical evolution for manufacturers was to create a new generation of radar detectors that were impervious to detection by the VG-2 or Spectre systems. It wasn’t long before all the name-brand radar detectors became undetectable. The marketing teams had a field day with their new features, and the sales of radar detectors took off again.

Ones and Zeros

At some point, the evolution of radar detectors took a leap into the digital age with the introduction of microcontrollers. These small computers replaced resistors, logic gates, transistors and more to reduce the size of radar detectors. The software running on these miniature computers brought us elaborate displays and a vast increase in system configuration and optimization options.

The real step forward came with the ability to update the software in the radar detector. Combined with performance improvements, software updates could resolve glitches that otherwise required hardware replacement. With updates to our phones and computers seemingly coming out of thin air, credit must be given to the serial ports and USB ports found on recent radar detectors. Yes, updates are a hassle, but without updates, functionality can suffer.

Advanced Signal Processing and Filtering

Another milestone in radar detector performance was the implementation of digital signal processing (DSP). All-digital radar detectors convert the received high-frequency information into the digital domain for analysis and processing. Unlike analog processing, variations in temperate have no effect on DSP technology. Digital processing also offers more precise signal filtering, resulting in fewer false alarms and increased sensitivity. The result of implementing DSP technology was to provide warnings earlier than analog systems, with fewer false alarms.

GPS Locating

The first radar detectors were quite simple. All they had to do was detect the presence of a radar signal. If a signal of any kind were present, the alarm would go off. Door openers at the grocery store and variety store, along with ultrasonic alarms at the local bank, set them off equally successfully. The challenge for radar detector manufacturers became to provide as much warning as possible while reducing the number of false alarms.

Sensitivity adjustments and improved signal filtering helped reduce the false alarms, but the biggest benefit came only recently. Many modern radar detectors, both windshield-mount and custom-installed types, include an on-board computer, GPS receiver and database of known false-alarm locations. As you approach the local bank, the radar detector will ignore the signal from the alarm system or automatic door opener. If you are in a location where a new false alarm pops up, you can add that location to your database.

Internet-connected Technology

With the incredible popularity of smartphones came the opportunity to integrate radar detectors with Internet connectivity. With a cloud-based database, your radar detector system can be updated in real time to the presence of a speed trap or a false alarm. Your phone is paired to the radar detector using a Bluetooth connection, so there is no need for any wires. Once your detector is on and you launch the app, the system will search its database for your location and report any known speed traps, red light cameras or false alarm sources in the area. If another user recently detected a speed trap, the map on your phone will alert you, long before you are in the range of the radar gun. Likewise, if you detect a police officer using a radar gun, anyone else in the area will receive that warning.

False Alarm Prevention

Modern vehicles include a wide variety of onboard warning systems. Adaptive cruise control, lane departure warning, blind spot monitoring and emergency brake assist systems are increasingly common. These safety systems often use radar systems to measure distances or identify the presence of another vehicle or object. These radar systems can cause false alarms on radar detectors.

In the past, radar detectors only looked for the presence of a radar signal within the X, K or Ka bands. They didn’t care what information was within the signal; just that it was present. Now, different automobile radar systems have signatures. Thanks to extremely fast signal analysis, radar detectors can decide if the signal it is detecting is from a Mercedes, an Audi or the coppers!

What Does the Future Hold for Law Enforcement?

Advanced image processing technology may soon eliminate the need for police to send radar or laser signals at all. Modern camera systems could discern your rate of speed simply by analyzing a video stream in real time. Your speed could be calculated based on the rate of change of the size of your vehicle relative to the objects around it.

Many police departments already own and operate remotely controlled drones. Would it be possible to equip a drone with a radar gun or lidar system? Absolutely! Perhaps their onboard camera system could be integrated into the aforementioned video analysis systems?

Companies have talked about technologies that would allow them to detect whether you are sending text messages from your smartphone. While this seemed like a great innovation a few years ago, the proliferation of voice recognition technology and the wide acceptance of Apple CarPlay and Android Auto squashed this need before the technology was perfected.

As more and more cars are connected to the Internet in real time, it could be possible for law enforcement agencies to communicate directly with your vehicle. This opens up a big can of worms regarding personal privacy. There is no doubt that the police will do everything they can find an excuse for to access the information.

Stay in Touch With Technology

Your local mobile electronics specialist retailer spends a great deal of time training on the latest radar detector technologies. When you decide you want protection from police radar guns, drop in and talk to them. They can suggest a solution that will meet your needs and explain how to get the most out of it.

(header image Fuzzbuster II By dave_z28ca (http://flickr.com/photos/21612624@N00/167903357/) [CC BY-SA 2.0 (http://creativecommons.org/licenses/by-sa/2.0)], via Wikimedia Commons)

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.

OEM Sound System Measurements for Audio System Upgrades

Upgrading 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.

The 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.

The 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.

A 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

The 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?

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

Understanding 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

This 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

In 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.

Product Spotlight: Sony XAV-AX8100 Media Receiver

When it comes to floating-face or T-style radios, there are more options than ever. The Sony XAV-AX8100 combines all the most sought-after features with an 8.95-inch screen that will look perfect in your dash. Whether it’s staying connected with Android Auto and Apple CarPlay smartphone integration or having support for all your favorite digital media files to entertain you on a long drive, this solution has all the bases covered.

8.95-inch Floating Face

The center point of the XAV-AX8100 is its large 8.95-inch color touchscreen. The display has a resolution of 800 by 480 pixels and has been treated with an anti-glare coating to help ensure that its graphics are clear in bright sunlight. At the base of the screen are eight physical buttons that provide quick and easy access to source selection, volume control, track selection and voice recognition features. As with all Sony multimedia receivers, the styling and colors are specifically designed to create a look that’s right at home in the dash of your car or truck.

One of the big upgrades to the XAV-AX8100 over its predecessor is the inclusion of an HDMI input jack on the bottom of the display. Located just under the volume control rocker switch, the input allows you to connect a laptop, game system or media player to access while the vehicle is parked and the parking brake is set.

Sony XAV-AX8100 — An HDMI input on the bottom of the display makes it easy to connect a media player or laptop.

Smartphone Integration Technologies

Apple CarPlay and Android Auto smartphone integration remain at the top of the feature list for the 8100. Using the voice recognition features of your smartphone and its internet connection, you can make phone calls, send text messages or request navigation directions without having to enter information on the screen. Instead, press the voice button on the radio and ask for what you want. Your phone will take care of the rest.

The Sony XAV-AX8100 also includes support for Weblink. When installed on your Android or iOS-based smartphone, Weblink allows you to display images from many popular applications on the radio screen. In addition, touchscreen commands from the system are relayed back to your smartphone if the application is compatible, so navigating app menus is intuitive and seamless.

Sony XAV-AX8100 Audio Features

This media device includes an AM/FM receiver and one USB port for your smartphone or a USB memory stick. The system will play MP3, WMA, AAC, WAV and FLAC audio files, along with MP4, WMV and MKV video files (when parked). Bluetooth hands-free calling and audio streaming are also built in, and the integration features provide direct access to iHeartRadio, Pandora, Spotify and Tidal streaming services. In addition, your authorized Sony retailer can add an SXV300 SiriusXM satellite radio receiver to deliver non-stop entertainment from coast to coast.

The XAV-AX8100 has a four-channel amplifier that can deliver up to 20 watts of power to each speaker. The front, rear and subwoofer preamp outputs are rated at 5 volts and include adjustable electronic crossovers. In addition, Sony includes their EQ10 10-band equalizer, the Extra Bass loudness feature and Digital Soundstage Organizer (DSO) processing to let you fine-tune the sound of your car audio system.

The radio is based on a single-DIN chassis, which will fit in vehicles that weren’t previously compatible with double-DIN aftermarket radios. Your installer can adjust the screen angle, extension and height so that the radio looks great and is easy to use. From an integration and safety standpoint, the XAV-AX8100 is compatible with most steering wheel audio control interfaces, and it includes a backup camera input with a reverse trigger wire.

If you’re looking for a reliable, high-performance radio upgrade for your car or truck, drop by your local authorized Sony car audio retailer and ask for a demonstration of the XAV-AX8100. Be sure to bring your smartphone to experience the voice command features. For more information about this radio and the other fantastic car audio upgrade products from Sony, visit their website. Also, be sure to follow them on Facebook page, Instagram and YouTube for the latest updates and new product releases.

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

If 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

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

Many 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.

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.

As 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

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

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.

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.

Police Radar Gun History

History of Radar Detectors

An Unfair Advantage

Ones and Zeros

Advanced Signal Processing and Filtering

GPS Locating

Internet-connected Technology

False Alarm Prevention

What Does the Future Hold for Law Enforcement?

Stay in Touch With Technology

Measure Twice, Cut Once

What if We Do Not Measure Your System?

What happened?

What We Do with the OEM Sound System Measurements

Inquiring Minds Want to Know

What are Speaker Parameters?

What Can We Determine from these Parameters?

Resonant Frequency of the Speaker – Fs

Equivalent Compliance Volume – Vas

Electrical Q of the Driver at Fs – Qes

Mechanical Q of the Driver at Fs – Qms

Total System Q at Fs – Qts

Compliance of the Driver Suspension – Cms

Effective Cone Area of the Driver – Sd

Mass of the Cone and Moving Parts – Mms

Maximum Excursion Level – Xmax

Additional Parameters

Proper Design Requires Simulation

8.95-inch Floating Face

Smartphone Integration Technologies

Sony XAV-AX8100 Audio Features

What is a Radar Detector?

Why Custom-installed Radar Systems Offer Better Protection

Police Laser and Lidar Systems

Laser Detection versus Laser Defense Systems

How to Use a Laser Defense System

Reduce the Clutter

Protection against Theft

Complete Vehicle Integration

Visit Your Local Mobile Enhancement Retailer Today

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