6. Polk Audio MM Series Subwoofers ($159.48)
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A complete balance between light weight and quality materials, the Polk MM Series Subwoofers produce superior bass without the bulk and heaviness of standard subs. Featuring a carbon composite basket with a “wagon wheel” design that reduces flex and neodymium magnetite motors that drive the rigid polymer cone, the engineering and design of the MM series subwoofers will provide better performance that will reproduce your music with incredible accuracy.