If you have space and are looking to get a subwoofer with the best bass, then a 15-inch is the way to go. Want to go big and buy the best 15-inch subwoofer money can buy? BestReviews wants to be better. Please take our 3-minute survey, and give us feedback about your visit today. Check our roundup followed by our buying guide and see which unit deserves your attention. There also has to be a balance, and if the bass from the subwoofer is too loud, the bass might drown out the music. Generally, a 15-inch subwoofer will be louder and clearer than smaller ones but, of course, they take up more space. YOU MIGHT NEED: TOP 10 BEST LED TRAILER LIGHTS IN 2020 REVIEWS 8, Power Acoustik 15” Dual 2 Ohms 3800W RMS Subwoofer. A 15 inch subwoofer is the epitome of power and performance when it comes to your sound system. $158. If you hate buying 15” subwoofers every now and then because they cannot just hold up well, you need to try out the Power Acoustik 15-Inch RMS Subwoofer. Sundown Audio NS-15 V.4 D2 15" 2500 Watt RMS Dual 2-Ohm Nightshade V.4 Series Subwoofer SKU #: 01892 Special Price $1,139.99 Get it now on Amazon.com . E1544 15-Inch 2400W Subwoofer. We highlighted the top rated subwoofers on the market, and then in our buyer’s guide we discussed what kinds of features you should look out for when finding the right sub for you. One of the few affordable subwoofers that offers a top-shelf audio experience.