We research the gear, compare the specs, and explain what actually sounds better.
Car audio buying guides and explainers focused on what actually matters: what power ratings really mean, whether a part suits your vehicle, and what the install involves. No sponsored rankings and no paid recommendations.
Fresh buying guides and install articles
Our newest buying guides, explainers and installation articles, written to help you understand what matters before you spend.
How to Tune Car Subwoofer Settings for Clean, Blended Bass
How to tune car subwoofer settings: set the gain,...
How to Install Subwoofer in Car: Step-by-Step Wiring and Mounting Guide
How to install subwoofer in car audio systems: mount...
How to Reset a Car Radio: Reset Button, Factory Reset and Radio Codes
Soft, factory and power resets for car radios, and...
Start where your build is stuck
Six hardware categories, with installation, how-to and troubleshooting guides alongside them.
Subwoofers
Sealed, ported and free-air. What each one costs you in trunk space and what it gives back in output.
Amplifiers
Class D versus Class AB, gain setting without a scope, and why rated power is only half the story.
Speakers
Coaxials, components and the truth about the peak power printed on the box.
Head Units
Pre-out voltage, DSP, time alignment and keeping your steering wheel controls.
DSP
Time alignment, active crossovers and the EQ curve that actually suits a car cabin.
Accessories
Wiring kits, fuses, distribution blocks and adapters. The parts that quietly decide reliability.
How we research car audio gear
Every guide starts from documented sources. Buying guides and reviews add hands-on notes only for products Marcus Reed has personally installed or tested, and say so when they do.
Manufacturer specifications
Published figures such as rated power, frequency response or sensitivity, credited to the manufacturer, not presented as our own measurements.
Research-based information
Technical documentation, installation manuals and other reliable sources, checked against one another wherever possible.
Editorial analysis
What a specification means in practice, how products compare, and which trade-offs matter for different vehicles and setups.
Hands-on observations
Notes on products Marcus Reed personally installed or tested. Untested products are research-based and never presented as tested.
Three guides worth reading first
Most upgrades go wrong in the order they are done. These three cover the decisions that come first.
How to Upgrade a Car Audio System: A Step-by-Step Plan
Speakers, head unit, amplifier, subwoofer, deadening and DSP: the...
How to Upgrade a Car Stereo: Parts, Wiring and Installation Steps
Choosing a receiver, the installation parts you need and...
How to Choose a Subwoofer for Your Car: 7 Steps That Decide the Sound
Space, power, voice coils and the box decide how...
Not sure what your system is missing?
A common mistake is upgrading the speakers before fixing the source. Start with the head unit and installation guides, then plan the rest of the system.