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BestReviews spends thousands of hours researching, analyzing, and testing products to recommend the best picks for most consumers. We only make money if you purchase a product through our links, and all opinions about the products are our own. Read more  
BestReviews spends thousands of hours researching, analyzing, and testing products to recommend the best picks for most consumers. We only make money if you purchase a product through our links, and all opinions about the products are our own. Read more  
BestReviews spends thousands of hours researching, analyzing, and testing products to recommend the best picks for most consumers. We buy all products with our own funds, and we never accept free products from manufacturers.Read more 
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How we decided

We purchase every product we review with our own funds — we never accept anything from product manufacturers.

30 Models Considered
20 Hours Researched
3 Experts Interviewed
170 Consumers Consulted
Zero products received from manufacturers.

We purchase every product we review with our own funds — we never accept anything from product manufacturers.

If you love bass-heavy music, then a car subwoofer is a great investment. It will boost lows in a serious way. Power output for 18” car subwoofers range from 300 to 7,500 watts at maximum power, though most fall within the range of 600 to 2,500 watts. The higher the watts, the more likely you’ll feel physical vibrations when cranking the volume up. Keep in mind that 18” car subwoofers are large and require more power than a smaller unit. They can also take up more space in the car. They have a larger cone than many are used to, which will produce a deeper bass sound. The cone material should be as resistant to tears and damage as possible. Some 18” car subwoofers need to warm up for a few minutes before they’ll provide the deep bass you’re looking for.

Other Products We Considered
The BestReviews editorial team researches hundreds of products based on consumer reviews, brand quality, and value. We then choose a shorter list for in-depth research and testing before finalizing our top picks. These are the products we considered that ultimately didn't make our top 5.
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Our Top Picks