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 […]
Product Spotlight: Rockford Fosgate M2-65 and M2-65B Marine Speakers
I remember when only one or two large car audio companies offered products designed specifically for marine applications. These days, there are dozens of brands in that market. From my extensive hands-on research, I can tell you that Rockford Fosgate is one of the brands you’ll want to check out for your boat. Their engineering-based […]
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 […]
Product Spotlight: Rockford Fosgate M2D2-10I and M2D4-10I Marine Subwoofers
When choosing subwoofers for a boat audio system, having the correct drivers for the application is crucial to designing a system that sounds good and will last for years. The marine audio fanatics at Rockford Fosgate have a subwoofer solution for every application. We will examine the 10-inch M2-Series M2D2-10I and M2D4-10I subwoofers in this […]
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, […]
Product Spotlight: Sony XAV-AX8500 Multimedia Receiver
Floating-face car radios are popular because of their flexible installation options and relatively massive displays. The Sony team has been hard at work updating their products, and the new 10.1-inch XAV-AX8500 digital multimedia receiver is their latest offering in this hot market segment. Let’s see what’s been added to the platform to keep it at […]
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 […]
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