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The Shockwave-12 is a powered 12-inch PA/DJ subwoofer with a Class D amplifier rated 400 watts RMS (800 watts peak) and a ported plywood/MDF cabinet. It covers 30–200 Hz with a 150 Hz crossover, hits 122 dB max SPL, and weighs 50.7 lbs with recessed handles and a pole mount. Its best new price is $249.99 at eBay as of November 7, 2026, the low end of what the three stores listing it new charge.
In stockSold by Seismic Audio Speakers Inc
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Lowest price we've seen: $249.99 on Nov 7 at Walmart. Tracked across 4 stores since Nov 7.
Rated 5 out of 5 across 107 ratings, buyers describe the Shockwave-12 as delivering far more bass than its size and price suggest. Owners use it in small venues and home setups and call it a strong value.
Powered 12" Pro Audio/ DJ Subwoofer Cabinet Over the last 20 years, Seismic Audio has become synonymous with high-quality and affordability in Pro Audio and DJ Gear. Our Subwoofer Cabinets have always been best sellers and received high praise for their ground-shaking bass performance. We are pretty sure we outdid ourselves this time! Introducing the Shockwave series of PA/DJ Subwoofers. Once you hear these, you will agree that we could not have picked a better name for this line of subs. Deep, punchy and low-end bass unlike any other subwoofer we offer in 12 or 15 inch models. This is a high performance, compact 12" Powered subwoofer with a Class D Amplifier. The Shockwave series was designed with medium to smaller live sound and DJ venues in mind. Do not let the compact size mislead you! Make sure pictures are secure and that nothing is close to the edge of a table. These subs will move furniture with its deep bass reproduction. These hit so hard, if you are standing in front of it, your heart may skip a beat and you will swear it is more than a 12 or 15 inch sub!