We tested each marine speaker in the same room, on the same mount, connected to the same receiver and recorded with the same microphone.
When I review car speakers, my goal is always to answer two common questions that shoppers have: Does it sound good? And is it loud?
Here are the best powered subwoofers for your car, ranked by their audio quality, power handling and enclosure size.
The best car stereos combine high-fidelity audio with comprehensive playback options and smartphone integration. Here are our top picks.
The best Bluetooth car kits bridge the gap between your smartphone and your car stereo. To find the best Bluetooth car adapters, I tested the signal strength and quality.
Made by Harman, the JBL BassPro SL is an under-seat subwoofer with the type of performance I've come to expect from Harman. The tight bass fills out a mix without dominating and it features a bigger sound than other under-seat subs.
Rockford Fosgate is among the most popular brand of car audio manufacturers, and the P300 is no exception as the most reviewed and highest rated car subwoofer on Amazon. This 300-watt subwoofer features a 12-inch woofer and a sealed enclosure designed to produce a punchy, yet tight performance.
The Infinity BassLink SM is an under-seat powered car subwoofer with a 125-watt rated amplifier and an 8-inch woofer. While it doesn't have the size or even the pristine performance of the 12-inch subwoofers I tested, it was the best performing under-seat subwoofer.
The Rockford Fosgate PS-8 is the under-seat powered subwoofer from the same Punch series as the Rockford Fosgate P300 (my pick for the best powered subwoofer overall). As with other under-seat subs, the woofer is 8-inches. However, it has a 150-watt amplifier.
The JBL GT-BassPro12 doesn't just look intimidating with its silver protective bars and molded woofer, but it sounds intimidating. With a 12-inch woofer and a massive Slipstream front-facing port, the performance is big and aggressive.
MTX Audio has a well-earned reputation for some of the most impressive high-end car subwoofers and car audio equipment on the market. The JackHammer, for example, costs $10,000 and is so big and powerful, they recommend you consider making vehicle modifications to handle it.
As an under-seat car subwoofer, the Kicker Hideaway has almost everything you should look for: a powerful amp, a compact design and plenty of control over the performance. Unfortunately, it doesn't shine enough in any of these areas to make up for the high price tag.
The Pioneer TS-WX1210A is a 12-inch powered subwoofer in a sealed enclosure engineered to produce tight bass.
The Kenwood KSC-SW11 features an 8.25 x 5.15-inch woofer. The rectangular shape is unique among under-seat car subwoofers, but it allows the subwoofer to fit in a much smaller enclosure. While the performance was above average, the size of the bass isn't great, even for an under-seat subwoofer.
The GOgroove FlexSMART X5 is an in-car Bluetooth FM transmitter trying to pass as an AUX-in Bluetooth adapter and a visor-style Bluetooth speakerphone. It does this by including an AUX cord and a visor clip.
FM transmitters aren't the best option, but for stereo's lacking an AUX port, it's the only option. With this in mind, the Nulaxy KM18 is the best Bluetooth FM transmitter I tested, despite having an audio quality far worse than each of the AUX-in Bluetooth adapters, like the Anker SoundSync Drive.
Jabra is one of the biggest and most trusted names in Bluetooth devices, and the Jabra Tour has been around for years. I've reviewed Bluetooth car kits since 2014 and the Tour had already been one of the best Bluetooth car kits for several years.
The TaoTronics TT-BR05 is the simplest Bluetooth car kit I've reviewed. It's plugs into your stereo's AUX port. It has few buttons and no interface. It simply creates a bridge for your phone to stream music through the stereo.
In past years, the Jabra Freeway was my pick for best Bluetooth car kit because of the superior hands-free call quality.