Speaker power ratings are among the most confusing and misleading specifications in the car audio industry. Once you understand the process used to test speaker power handling, you’ll quickly realize that the information doesn’t always translate to information that’s helpful in choosing an amplifier. Let’s dive into the science behind choosing the best amplifier for […]
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Explaining Audio Signal Phase and Polarity
Understanding how DC voltages combine is quite simple. They add linearly when we wire sources (like batteries) in series. But understanding how AC waveforms combine is complicated. AC waveforms don’t always sum intuitively unless the peaks and valleys align perfectly. We see many examples where people interchange the terms phase and polarity. In reality, those […]
Explaining The Class SB Car Audio Amplifier
There will always be debates about whether a Class D amplifier can sound as good as a Class AB. We’ve proven that it all depends on who designs the amplifier. We also see mumblings about single-ended amps versus full-bridge designs. STMicroelectronics created a different and unexpected way to deliver efficient power. These amplifiers are categorized […]
Under-Seat Truck Subwoofers – Face Up or Down?
Over the last decade, the popularity of under-seat truck subwoofer upgrades has exploded. At least a dozen companies offer vehicle-specific solutions with shallow-mount subwoofers to add bass to these vehicles. If you’re perusing the enclosure options for your truck, you’ll notice two distinct options: enclosures with drivers that face upward into the seat bottom and […]
Why Do Speakers and Subwoofers Sometimes Have CCAW Voice Coils?
You should be aware that copper-clad aluminum wire is the least-preferred option for connecting an amplifier to your vehicle’s battery or alternator. Copper-clad aluminum wire has more resistance for a given diameter than an all-copper cable. As a result, it wastes precious voltage and transforms it into heat when it could be allowing your amplifier […]
What Happens When Using an Oversize Subwoofer Enclosure?
What happens when a subwoofer is used with an oversized subwoofer enclosure? This article will look at the good, the bad and the ugly in terms of an improper match between the electromechanical characteristics of a subwoofer and the need for a proper enclosure. Why Do Subwoofers Need an Enclosure? If you’ve been following our […]
Subwoofer Enclosure Terminals Cups and Connections
One thing common to every car audio subwoofer enclosure is that they need to connect to the subwoofer amplifier. Most subwoofer enclosures include a terminal cup or something similar to facilitate easy connection to the subwoofers. Let’s look at subwoofer enclosure speaker wire connection options. Guess What? Ohm’s Law If you’re serious about car audio, […]
What Is GPS Locating and How Does it Work?
Undoubtedly, you’ve heard the term GPS. It’s not uncommon for consumers to refer to navigation software like Waze, Google Maps, Apple Maps or a portable navigation device from Garmin or TomTom as a GPS. Unfortunately, giving these solutions the GPS title is incorrect. Let’s look at GPS, how it works, and how similar technologies are […]
How Amplifiers Distribute Their Power to Multiple Car Audio Speakers
The concept of how car audio amplifiers distribute power to multiple speakers connected to the same channel seems simple. A little math with Ohm’s law and looking at the amplifier’s specifications should tell the tale, right? Yes and no. Things get more complicated when crossovers are involved. Don’t fret; we’re here to make everything easy […]
Headlight Bulb Upgrades: Part 5: Electrical Interference
As we continue our series on headlight bulb upgrades, it’s time to discuss electrical interference. Just as in the previous article on spectral content, this is an issue that very few retailers or manufacturers check for or discuss. While these considerations don’t affect the performance of your lighting system, they can significantly affect the performance […]