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8" Subwoofers

Eight inches is the sweet spot for tight, fast bass from a box that still leaves room in the trunk. Browse 8 inch subwoofers from Sundown Audio and Crossfire Car Audio, including the Crossfire C5-V3, Sundown SA-Series v.3, X-Series v.3 X-8, SD-Series v.4 Neo, E-Series v.6, U-Series v.1, the shallow SML-Series thin sub and the Sundown Powersports PSE-8. Most models come in D2 or D4.

  • 19 products
  • Crossfire Car Audio · Sundown Audio
  • Free shipping over $250
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19 products

Why Choose 8 Inch Subwoofers

An 8 has less cone mass than larger drivers, so it starts and stops quickly and tracks fast kick drums and bass lines with precision. It also needs a much smaller enclosure, which opens up installs behind truck seats, in spare-tire wells and in compact cars. Two or more 8s in a shared box can rival a single larger sub while keeping the profile low.

Matching the model to the install

  • Shallow mounting: the SML-Series 8 inch thin sub is built for spots where depth is limited.
  • Higher power: the X-Series v.3 X-8 is listed at 800 watts, and the SD-Series v.4 Neo is another step up in output.
  • Daily systems: the E-Series v.6, U-Series v.1, SA-Series v.3 and the Crossfire C5-V3 (600 watts RMS) cover clean, everyday bass.
  • Powersports: the Sundown Powersports PSE-8 is a 250 watt option for UTVs and other open-air rigs.

Wiring and power

With D2 and D4 options, one 8 can be wired to 1 or 4 ohms (D2) or to 2 or 8 ohms (D4). Pick the version whose final load matches what your amp is stable at, and feed it roughly its RMS rating rather than its peak figure.

Building Around an 8

Follow the enclosure volume in the manual; small sealed boxes are common for 8 inch subwoofers, and ported designs add output near tuning if space allows. Pair with a compact monoblock from our amplifiers and a fused amp wiring kit gauged for the amp's current draw. If you have a bit more room, 10 inch subwoofers dig deeper, while 6.5 inch subwoofers fit even tighter spaces. See every size in our subwoofers category.