When it comes to expressing the quality of an audio system component, the amount of distortion it adds to a signal is the defining factor. In this article, we’ll talk about how much distortion each part of an audio system adds – so that you can target your budget for the greatest benefit. We’ll rank Read More…

A while back, we took a quick look at how alternating current (AC) signals in our car audio systems work. While the amount of work done by an AC voltage source can be the same as that of a direct current (DC) source, the changes in current flow direction add complications. In this article, we’ll Read More…

When upgrading your car stereo, speakers are the only link between your electronics and your ears. Unfortunately, low-quality speakers connected to the best amplifiers and source units in the world will still sound mediocre at best. In this article, we’ll take a look at the classes of speakers available for your car or truck. In Read More…

If you look in the back of a friend’s car or SUV, you’ll find there are a few common traits when it comes to subwoofer system installation. For larger enclosures, the subwoofers are usually mounted behind the seat and fire rearward. For single-sub systems, many installations feature the drivers mounted in an enclosure that fits Read More…

There are a lot of theories around the benefits of adding stuffing to a sealed subwoofer enclosure. Most contend that stuffing makes the enclosure behave as though it is larger, allowing the woofer to play louder at low frequencies. If this is true, then adding stuffing seems like a great idea. While creating many of Read More…

Having your local specialty car audio retailer install an amplifier in your car or truck is a great way to improve the performance of your audio system. The extra power will allow you to turn the volume up higher to extract more from your speakers. If you have a subwoofer installed, you’ll need to choose Read More…

When designing a car audio subwoofer system, the Product Specialist and Installer you’re working with have two options for mounting subwoofers in your enclosure. There is, of course, the typical method with the motor assembly and basket inside the enclosure. With that said, many installations have the subwoofers mounted upside down, or as many call Read More…

In the ’80s and ’90s, the target demographic at a car stereo shop was men ages 18 to 24. Guys would work to upgrade their cars with subwoofers, pull-out CD players and lots of speakers in hopes of having the loudest audio systems in their group of friends. Not coincidentally, during that time magazines ran Read More…

A few weeks ago, we were browsing a few car audio related Facebook groups and Reddit subreddits. We saw the same question come up time after time: “I have two dual 2-ohm voice coil subs; how do I show the amp a 1-ohm load to make max power?” It wasn’t just once or twice that Read More…

For car audio enthusiasts who’ve invested time studying the Thiele/Small parameters of speakers and subwoofers, you’ll know there is a specification called Xmax. This variable, typically expressed in millimeters or inches, is intended to describe the one-way excursion capability of the driver. Put another way, it’s the distance the cone can move forward or rearward Read More…

For car audio enthusiasts, especially those interested in competing in SPL competitions, amplifier efficiency should be one of their primary concerns. In this first of three articles on efficiency, we take a close look at the Rockford Fosgate M5-1000X1 Class-D subwoofer amp and analyze how well it makes use of power at different output levels. Read More…

If you’ve been around the car audio scene for a few decades, then you’ll recall a time when almost all amplifiers doubled their output power when the load impedance was halved. For example, an amplifier might have been rated to produce 75 watts per channel into a 4-ohm load and 150 watts into a 2-ohm Read More…

It’s time to dispel another unsubstantiated car audio myth! This time, we’re talking about claiming that you can’t ground an amplifier directly to the battery in a vehicle. Perhaps it would add to the clarity of the statement to say that many inexperienced installers think the ground wire for the amp has to go to Read More…

Every professional audio system installation, be it for a church, dance club, home theater or your car, requires DSP calibration. Your smartphone, laptop and smart speaker use digital signal processors to optimize the sound you hear from the tiny speakers. Digital signal processors aren’t magic, and they aren’t complicated. They offer a reliable and straightforward Read More…

Not long ago, we looked at how an increase in subwoofer voice coil temperature reduced the power delivered from your amplifier. With component temperatures easily exceeding the boiling point of water, the impedance of the voice coil can increase by more than 50%. Manufacturers that understand this go to great lengths to include technologies to Read More…

We can’t count the number of times we’ve heard people say that listening to music over Bluetooth A2DP doesn’t sound as good as if you played a WAV file directly from a USB memory stick. So we fired up the Sony XAV-AX7000 multimedia receiver that we reviewed in late 2020 and made a series of Read More…

A comment came up the other day that it was unwise to use all channels of a four-channel amplifier to power a pair of subwoofers. Not only is this incorrect, but this practice opens up several unique system designs and installation possibilities, especially where high-power requirements are necessary. Let’s dive in! Four-Channel Amplifiers Are Amazing! Read More…

In a recent online discussion, someone stated that a car audio amplifier couldn’t be power-hungry. After the eye-twitching passed and our heart rates settled, we knew this was a perfect topic for our series on car audio myths. Let’s look at how amplifiers, specifically subwoofer amplifiers, make use of the power from your vehicle’s electrical Read More…

Every so often, someone asks if it’s a good idea to upgrade their factory-installed stereo system by swapping out the original subwoofer with a new one. We aren’t talking about building a new enclosure and adding a dedicated amplifier. They want to put a different 6-, 8- or 10-inch in the factory location and connect Read More…

In the car audio world, terms like subwoofer box rise and power compression are relatively familiar to those who push their sound systems to the limit. So, after extensive research (three minutes) and a detailed planning session (another two minutes), we decided that it would be worth doing an experiment to explain and quantify these Read More…

We were cruising the internet a few weeks ago and noticed a comment from a self-proclaimed car audio expert that new speakers and subwoofers need to be broken in at low power levels. He made it particularly clear that the voice coil needed to be broken in gently. If you’ve ever considered how a speaker Read More…

Decades ago, car audio professionals were adamant about the statement that tweeters needed to be installed right beside the midrange speakers in your car audio system. Is this accurate? The answer is that it depends on a few variables. Keeping them close can’t hurt, but it might come at the expense of improving the soundstage Read More…