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…

Car audio amplifier designs have changed a great deal over the last few decades. Modern amplifiers have more features along with improved efficiency, and they offer consumers better value than their predecessors. This article will examine the key components in the construction of mobile audio amplifiers, their evolution and their benefits. Amplifier Design Balances Power Read More…

There’s a strange car audio myth that claims you can’t mix different brands of source units, speakers, amplifiers, subwoofers and signal processors in the same audio system. While it might be fun for a distributor, sales representative or employee at a car audio retailer to do a one-brand build, chances are you’ll want to pick Read More…

Not long ago, we saw a post where someone asked whether they needed to dedicate a channel of their digital signal processor to equalize the subwoofer in their car audio system. As usual, several amateurs chimed in with their opinions, but nobody presented any facts supporting a yes or no answer. As professionals, when we’re Read More…

Car audio sound deadening has been a popular upgrade to improve the comfort of your vehicle and enhance audio system performance since the early ’90s. The original concept of sound deadening was to make cars and trucks quieter and more comfortable by limiting the ability for noise outside the vehicle to get into the cabin. Read More…

When it comes to producing deep bass from a small enclosure, adding a passive radiator offers some significant performance benefits. If you aren’t familiar with this type of subwoofer enclosure, then you’ve come to the right place. We’ll look at how this design works, the benefits it offers and analyze potential drawbacks. Ready? Let’s dive Read More…

When it comes to car audio systems, more is better, right? Enthusiasts want more bass, more output and more impact. When your favorite song comes on, turning the volume knob all the way up seems like the right thing to do. For car audio professionals, we need to balance keeping our clients happy with great-sounding Read More…

Did you know that a difference of 20 watts of power between one car audio amplifier and another might be completely inaudible? That same 20-watt difference might mean having to keep your windows rolled up on the highway to hear your music. Let’s look at the physics of reproducing sound with moving-coil loudspeakers and why Read More…

No matter how hard he or she tries, the installer who’s calibrating your car audio system can’t use a digital signal processor to tune distortion out of your system. We aren’t talking about the harmonic distortion that happens when a signal overloads the processor or an amplifier’s input stage. Preventing clipping is a simple process Read More…

Look at any of the top car audio subwoofer amplifier models available from specialty retailers. You’ll find that most include an option for a remote level control or bass boost function. Being able to fine-tune the output of your subwoofer system is great for those times when you want to rock out to an amazing Read More…

If you’ve browsed amateur car audio groups on Facebook, you’ve likely seen someone post that they have “set the gains halfway” on their amplifier. Their misguided theory is that this setting will limit the maximum amount of power the amplifier will produce. Saying this in the presence of a professional installer is the best way Read More…

When designing and integrating high-performance speakers into your car or truck, your local specialty car audio retailer might suggest choosing an amplifier or signal processor that includes a bandpass crossover. If you aren’t used to designing speaker systems, a task that most consumers don’t concern themselves with, then the term bandpass might be confusing. Please Read More…

Dash pods, kick-panel enclosures and sealed enclosures in doors might look cool, but they aren’t always an ideal solution for a speaker that will attempt to produce bass. In this context, when we talk about bass, we are discussing audio frequencies below about 300 Hz. In this range, most drivers with a cone diameter of Read More…

Since 1953, the Chevrolet Corvette has been an icon in the North American automotive industry. These two-seaters represent value and performance with styling that always lets them stand out from the crowd. Try as General Motors might, there’s still room for improvement, even on a flagship vehicle like this. Let’s look at some of the Read More…

Speaker pods and build-outs on A-pillars are becoming increasingly common in custom car audio installations. While some of these solutions look cool, the laws of physics can work against these cosmetic efforts to degrade the performance of your car stereo system. The subject of speaker installation could (and should) fill a book. In this article, Read More…

If you’ve looked carefully at the specifications of car audio amplifiers for any amount of time, then you’ll know that some designs make more power when they are connected to a higher-voltage electrical system. This type of amplifier is called an unregulated design. In the simplest of terms, it multiplies the provided battery voltage by Read More…