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Watch more Car Audio 101 videos: www.howcast.com/videos/497123-One-12-or-Two-10-Subwoofers-Car-Audio Learn which hits harder -- one 12" subwoofer or two 10" subwoofers -- in this Howcast car stereo video with expert Movin' On. Hi my name is Movin On, and I've been working in the field of car audio and mobile electronics for 8 over years. I've installed everything from navigation systems to full car stereo systems, remote starters, alarms, and beyond. To learn more, visit our web site at www.movinon.com. So what produces more volume, two 10-inch sub-woofers or one 12-inch sub-woofer? This is the age-old question. The truth is the more surface area you have, the more area you move and the more volume you have. So all other things considered equal — equal amplifier, same brand sub, same model — two 10s are going to be a lot louder than one 12 because they have a lot more surface area. However, there are plenty of 12-inch subs that, as a single unit, can produce a lot more volume than two 10s, but you're going to need a bigger amplifier and a higher-powered sub. Also, 12s and 10s produce completely different types of sounds. 10s are going to be punchy and 12s are going to be boom-y. Also you're going to have to consider the enclosure these speakers are in. If a 10-inch sub is in a vented enclosure, it's going to give a boom-ier, deeper sound. If you have a sealed enclosure, it's going to be tight. If you brings subs down to something even smaller like an 8, it's going to be even punchier. Taking all these variables into account, all things considered equal, two 10s are going to be louder than one 12.