If there’s one thing that can add emotion and excitement to your music, it’s adding a little more bass. Bass frequencies, especially those below 80 Hz, can be felt as much as heard at a higher volume level. The tingling in your amps and vibration in your back make a night at a club, your favorite concert or a high-end car stereo system some of the most enjoyable musical experiences available. The problem is, adding bass isn’t always easy. Let’s look at how many people do it and offer a few suggestions for enhancing the low-frequency performance of your car stereo.

Making Bass Takes Power

If you are an avid reader of our articles, then you know that it takes significantly more power to drive a subwoofer to an output level of 90 dB than it does for a set of tweeters. You can find out more about the physics behind that phenomenon here.

Unless the stereo system in your car has a dedicated amplifier with a switching power supply, it’s likely with 6.5- or 6×9-inch speakers as the largest size, it takes a lot of power to move the speaker cone enough to produce the bottom few octaves of our music.

Imagine “Thunderstruck,” “Bohemian Rhapsody” or “Yeah!” by Usher comes on Pandora and you can barely hear the bass line. Instinctively, you look for a way to turn up the bass with the tone control or EQ built into your car radio. More often than not, you are rewarded with a garbled mess that sounds less like music and more like the performer is munching on a rubber floor mat.

As much as this isn’t any fun, it’s really no surprise. That tiny little amplifier built into your radio is designed for moderate listening levels with fairly neutral overall tonal balance. That means, not a lot of bass relative to the mids and highs.

Problem defined. How do we fix it?

Does Adding Power Make More Bass?

What if we visited our local car stereo shop and asked to have a 75-watts-per-channel amplifier installed between the factory radio and the speakers? Now, any signal that comes out of the radio is amplified and we don’t run out of power when the bass line kicks in, right?

In the simplest of terms, sure, adding an amplifier to your factory speakers helps a lot. With that said, you are still limited by the small size of the speakers. Worse, you are asking those relatively tiny woofers to move really far to produce bass, as well as midrange information. Unless someone has come up with a way to defy the laws of physics, more excursion always results in more distortion.

Adding an amp added a little bass, but made the midrange sound worse.

Will Upgrading Speakers Add Bass?

Let’s say you skipped the amplifier idea and decided that upgrading to high-quality speakers was a better bet. Do better or more expensive speakers produce more bass than less expensive offerings? There’s almost no definitive way to answer that question in a single paragraph. Some speakers produce less midrange relative to the amount of bass they produce. There are also speakers that play lower than factory speakers. In both cases, the new speakers are typically less sensitive (require more power) than what’s already in your car or truck. In short, you may get the perception of more bass, but more often than not, you’ve ended up with less midrange.

The good thing about upgrading your speakers is that they can likely handle the power from an amplifier with fewer complaints and stress. So, if you upgrade your speakers and add an amplifier, your system might sound pretty good.

The Best Way to Add Bass is to Add a Subwoofer System

Imagine if there were a way to add an amplifier and speaker to your car or truck that was dedicated to reproducing bass. I know, it sounds far-fetched, right? Sorry, just kidding.

Adding a subwoofer and driving it with a dedicated amplifier, even if the selection is modest, will offer an impressive improvement in the reproduction of bass in your music. A powered 8-inch subwoofer that fits under a pickup truck seat or in the corner of your truck is a perfect starting point. Best of all, you can turn the bass settings on the radio back down and let the small speakers in your car do their job of reproducing midrange and high-frequency information. The result is a car stereo system that plays louder and sounds amazing.

Of course, there are an unlimited number of options for generic, vehicle-specific and custom subwoofer systems to add more bass to your car stereo. Your local specialist mobile enhancement retailer can help you choose a solution that will meet your needs. Drop by today and have a listen to what they have to offer.

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.

Our series of articles on what tools are important to test and configure a car audio system upgrade moves on to the oscilloscope. Tools like digital voltmeters, real-time audio analyzers and, of course, hand tools such as screwdrivers, side cutters, wire strippers and a socket set each have their place and importance. When it comes to analyzing the amplitude of electrical signals that change with time, only an oscilloscope can provide an installation technician with the information he needs.

What Is an Oscilloscope?

An oscilloscope is a device with a screen that displays the amplitude of a signal relative to time. The screen has several calibrated squares, each representing an adjustable time base or voltage level. Controls on the scope let the user change the time base and voltage ranges for the type of signal that is under inspection.

Why Is It Important for the Shop I Choose to Own an Oscilloscope?

If you are having an audio system installed in your car or truck, especially if an equalizer or digital signal processor is in the audio signal chain, having a scope is a sure-fire way of setting the amplifier sensitivity controls so they can achieve maximum output without significant distortion. Proper configuration ensures the highest possible signal-to-noise ratio, so hiss and background noise are kept to a minimum.

An Oscilloscope is an Important Tool

A scope is also useful for testing the wiring in the car for audio and data signals to confirm that each electrical connection will function as intended. Some installers try to use a digital multimeter set to the alternating current (AC) voltage setting to perform these tests. While the meter may show some amount of information, there is no way to know the shape of the waveform to determine if the signal is digital or analog.

Finding a Quality Mobile Enhancement Retailer

As you search for a shop to work on your vehicle, we recommend that part of the process include a tour of their installation facilities. The install bay and fabrication area need not be spotless if they are working on vehicles, but they do need to have the right tools and supplies. Ask them what they use to set the sensitivity controls on the amplifiers you intend to buy. Hopefully, they have invested in the right tools and they own and know how to use an oscilloscope.

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.

To close out our series of educational articles on amplifier specifications, we are going to talk about operating voltage limits and, by association, the protection circuits built into a car audio amplifier. In the good old days of electrical systems that were composed of an alternator, battery, switches and a couple of relays, delivering a relatively constant voltage to a car audio amplifier was easy. New technologies and limits on battery, alternator and wire size have made it much more difficult to keep our amplifiers happy.

Automotive Start-Stop Systems Cause Low Operating Voltage

With the never-ending battle to eke out every ounce of fuel efficiency from the vehicles we drive, automakers have resorted to systems that will shut down the engine to save fuel while idling. Transitioning from standard idle mode to the shut-down state doesn’t pose a problem for most amplifiers as the battery voltage only drops to the 12.2 to 11.5-volt range. If the voltage starts to drop because the car has been idling too long, the engine will restart automatically.

What poses a problem for modern car audio amplifiers are the voltage dips associated with the engine starting. In conventional vehicles, the stereo is off while you are starting the vehicle. These start-stop systems keep everything running and playing as the engine restarts. Electrical system voltage can drop below seven volts while the engine cranks. Many amplifiers shut themselves down below nine or ten volts, and as such, your music would stop playing. While a pause in your music isn’t truly problematic, it can be annoying if you are stuck in stop-and-go traffic.

New amplifier designs include circuitry that will keep the amplifier active during brief low operating voltage conditions. Some companies specify their amps as being able to handle as little as 6 volts for as long as 5 seconds to ensure that your music plays without interruption. This same start-stop compliance design is required for digital signal processors to prevent them from shutting down during engine restarts.

Car Audio Amplifier Protection Circuitry

Three decades ago, if you shorted the outputs of an amplifier, it would blow up, occasionally with spectacular results. Modern amplifiers include protection circuits that monitor different functions and automatically shut the amp down when an unwanted condition occurs. Most amplifiers include protection against overheating or short circuits on the speaker wires. Better amplifiers may provide a warning if a power connection over-voltage condition occurs that could damage the components inside the amp.

A select few manufacturers provide computerized monitoring of different parts of their amplifiers and flash error codes to let users know why the amp is in protection. Short circuits, over-voltage, under-voltage, over-temperature on the power supply and output stage and a notification about repeated short circuits are provided. This information makes it much easier and more efficient for a technician to troubleshoot an installation or speaker issue.

How Car Audio Amplifiers Handle Over-Temperature Conditions

There are two ways for an amplifier to protect itself if it gets too hot. The most common mode is for the amp to stop playing music so that the power supply and output switching devices can cool off. The second option is for the amp to reduce the output signal so that less heat is created. While it’s nice that your music won’t stop playing, most consumers tend to try and turn the volume up higher when the music gets quieter. Eventually, amplifiers that roll back power will go into a state of full protection and shut themselves down to protect components.

If you live in an area that gets hot during the summer, choosing an amplifier with adequate cooling from a large heatsink or a fan is a good idea. Cramming a tiny little amp into the corner of your trunk or cargo area may not be the best choice in this situation.

Visit Your Local Mobile Enhancement Retailer Today

If you are interested in upgrading the audio system in your car, truck or SUV, purchasing a new amplifier will be a fundamental part of the process. Your local specialist car stereo shop can help you wade through the hundreds of amplifier options on the market to find a solution that sounds amazing and works with your budget and performance expectations.

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.