Installing a mobile audio system involves much more than just hooking up some wires and driving in a few screws. Almost all vehicle manufacturers have realized that some amount of audio system tuning will dramatically improve their customers’ experience. When you decide it’s time to upgrade your factory audio system, we need to take into account any tuning that may have been done by the factory. It’s not easy, but at the same time, it’s not impossible. This article provides a brief look at what is involved in connecting a new amplifier and speakers to your factory source unit or amplifier, or as it is called, OEM integration.

It’s Not Flat

No, we aren’t talking about the Earth. One of the first steps in designing a premium audio system upgrade is to measure the electrical signal that is being sent to each of your speakers. Why? As we mentioned, more and more factory source units and amplifiers include advanced signal processing. Even some of the most basic audio systems with only four speakers have custom equalization for each speaker. Once our installers know what they are dealing with, they use that information in designing your new system.

The signal measurement process should be done before system design. If the signal is flat (no equalization), then the system design may take a different direction from when the signal is equalized. Compensating for factory equalization requires that some kind of equalizer be installed in the new system. Either way, we have to allot time to measure the acoustical response of the new system and make appropriate adjustments.

Think of this process as though your installer were a surgeon preparing to solve a medical problem for you. The surgeon will order x-rays, scans and many tests long before you’re on the operating table. Nobody wants to start work on a project without knowing what they are dealing with. Modern car audio systems are no different.

Front and Center

Automobile manufacturers strive to make all their customers happy – within a certain budget. This goal includes providing an enjoyable audio experience for everyone in the vehicle. Many mid- and high-level factory audio systems use a center channel to help create a listening experience that is enjoyable for both occupants of the front seats. Configured properly, a center channel can help create a realistic soundstage from both seating positions. Trust us when we say that some of the people who tune these factory audio systems have a lot of experience doing what they do.

When we want to upgrade the audio system in a vehicle with a center channel, we have to reverse-engineer how that speaker is functioning. Is it a mono signal that is the sum of the left and right signals? Is it an up-mixed signal that plays sounds that are not reproduced by the left and right speakers? It could also be a little bit of both. Your installer will have to do some tests to decide what is happening and how to deal with it.

Do We Undo or Up-do?

If you have a vehicle with a genuine up-mixed center channel, one of the best ways to upgrade the audio system is to leave the processing alone and add better speakers, amplifiers and signal processing. With this method, we can create a sound system that sounds amazing from both the driver and passenger seats.

The basic concept is to take the left, center and right signals; recombine any frequency filtering; then send those three signals to whatever speakers you choose for each side of the vehicle and the new center channel. Often, the new system will be a three-way speaker set in the doors and maybe the A-pillars, and a two-way system in the center. We will most certainly use a digital signal processor and/or an integration processor to do the signal filtering and tuning for the new system.

How We Undo What They Do

Several processors on the market can sum filtered channels together and undo factory equalization and time alignment. Some of these processors require manual adjustments and some work automatically with a custom setup track. After using one of these processors to provide a full bandwidth signal, we can then use digital signal processing to set up the new system and compensate for the vehicle acoustics. Just as the vehicle manufacturer chose to equalize the signal going to each speaker, we need to do this to maximize the performance of your new system.

What if We Don’t Undo What They Did?

Imagine a simple scenario: You have a car, perhaps a Nissan Altima. Even the base model audio system has equalization in this vehicle. Equalization is based on the speaker that is being used, location of the speaker and acoustic effects of the vehicle on the signal from that speaker relative to the listening position. If we change the speaker to one that is better, the factory equalization can – and most likely will – work against us. That nice new speaker may sound worse than the cheap factory speaker. After all, the manufacturer tried to make what was likely a low-quality speaker sound OK.

Trust Your Local OEM Integration Experts

When it comes time to upgrade the audio system in a fairly new vehicle, make sure you are working with a mobile electronics retailer that knows how to evaluate the existing audio system properly. If you are changing the source unit, then it’s no big deal. But if you are using the factory radio and/or amplifier, proper testing is crucial. Don’t be scared or discouraged. A well-trained retailer can transform any audio system into something truly amazing! Drop in and see what they can do for 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.

When it comes to staying in touch with your family and friends while behind the wheel, we all know that it’s best to keep your cellphone in your pocket or purse. What do you do when you just have to communicate? Do it intelligently and safely with a smartphone integration system like Android Auto. Let’s look at the functionality of this unique communication solution.

What Is It?

Android Auto is a software suite that runs on a multimedia source unit. Android Auto will work with most Android-based cellular phones running version 5 (Lollipop) or newer of the Android operating system.

Android Auto provides users with an intuitive and easy-to-use interface that allows them to make phone calls, send and receive text messages, play music, and use Google Maps for GPS-based navigation. The entire interface was designed specifically to be used while in the car. The icons are large and easy to read, and you can use Google’s voice recognition interface to execute commands for most functions.

How Do I Use It?

It’s very easy to use Android Auto. Start by downloading and installing the Android Auto application on your smartphone from the Google Play store. Pair your phone to the radio over Bluetooth. Plug the USB cable into your phone. Depending on the model of your source unit, Android Auto should launch automatically or may require that you should press the Android Auto button. From there, you will see the home screen with information such as recent navigation searches and weather information. All you have to do to start using Android Auto is press the microphone button and talk. If you prefer to press buttons, there is a row of smart keys at the bottom of the screen.

What Can I Do?

Let’s say you get stuck in traffic and you need to call someone with whom you have an appointment. Press the voice button and simply say, “Call Sam Smith” or “Call 321-555-1234.” The radio and phone will take care of the rest. The same goes for sending a text message; simply press the voice button and say “Send Sam Smith a text message.” The system will respond by asking what you want to say, to which you can reply, again verbally, “Hi, Sam, I’m stuck in traffic. I will be 20 minutes late. Please accept my apologies.” Google will send your text message. If and when Sam responds, you can ask Android Auto to read you the reply message.

Picking a song from the music stored on your phone is just as easy. Press the voice button and ask it to “Play Lorde” or anything else you have available.

You can use the voice recognition system to select a navigation destination just as easily. Simply press the voice button and say, “Take me to the nearest gas station” or “Find me an Italian restaurant” or “Plot a route to 555 Renegade Road in Bismarck.” There are several benefits to using Google Maps to assist in planning your route. You have access to the latest destination information from the inconceivably massive Google database. You always have the latest mapping. There is never a need to buy anything. Google provides real-time traffic flow information to help plan your route efficiently.

Additional Android Auto Applications

Android Auto has released a development kit to allow third-party companies to create applications that will integrate with Android Auto. These apps include Pandora, iHeartRadio, Spotify Music, TuneIn Radio, Skype and many more. You also get access to Google Play Music for free for 90 days when you first start using Android Auto. That’s 30 million songs, right at your fingertips.

If you have an Android phone and are looking for a safe way to stay in touch, be entertained and get the best driving directions available, all while driving, then drop into your local car audio specialist retailer. Bring your phone along – chances are they will have a unit on display that you can try out.

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.