As we continue our look at how car audio amplifiers work, let’s discuss how the classic Class AB amplifier output stage works and explain why it’s still the benchmark for high-end audio systems. How Does a Class AB Output Stage Work? We recently looked at the power supply, the input stage and how Class D […]
Tools of the Trade – The RTA
Our series on the tools that are important to test and configure car audio system upgrades moves to the topic of the real-time audio analyzer, also known as an RTA or spectrum analyzer. This important tool helps installers measure the acoustic response of your mobile audio system, and it can be a fundamental component in […]
How Does a Car Audio Amplifier Work? – The Class D Output Stage
As we continue our look at how at how car audio amplifiers work, we need to discuss what has become the most popular design on the market today: amplifiers that use a Class D output stage. In audiophile realms, Class D designs often carry an unfavorable reputation. Do their drawbacks outweigh their benefits? Let’s have […]
2012 Jeep Wrangler Gets Kenwood eXcelon Radio Upgrade
A repeat client of ours from Ishpeming contacted us about upgrading the radio in his 2012 Jeep Wrangler to add some new technology to his ride. His previous radio had failed, and he was in need of some new tunes. We were able to help. After discussing some options and what features were important to […]
Is Turning Up the Bass on Your Car Stereo a Good Idea?
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 […]
Tools of the Trade – The Oscilloscope
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 […]
Understanding Specifications: Operating Voltage Tolerances and Protection Circuits
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 […]
Car Audio Amplifier Remote Control Options
If you are thinking about having your local mobile enhancement retailer add a subwoofer amplifier to your car or truck, you may want to ask them about the remote level or bass boost control options that are available. Being able to adjust the amount of bass your system produces from the driver’s seat allows you […]
Tools of the Trade: ProDemand Vehicle Information Service
Among the many tools that mobile enhancement technicians use, one of the most valuable is ProDemand from Mitchell1. If you’ve spent any time in the automotive service industry, you’ll recognize the classic brown-and-yellow Mitchell service books. The information in these paperbacks is now available to automotive and electronics technicians through a web interface. Let’s look […]
Understanding Specifications: Class AB Car Audio Amplifier Crossover Distortion
We are at our second-to-last article in our car audio amplifier specification series and this time, we are going to talk about Class AB amplifier crossover distortion. This distortion has nothing to do with the high- or low-pass filters built into your amplifier; it’s a problem with the very concept of the Class B amplifier […]