Monoprice SW-12 400 Watt RMS Powered Subwoofer drops to $179.99 on Amazon

Save $220 on this price drop. A 12-inch powered subwoofer with 400 watts of Class D amplification normally costs well over $300. Right now, the Monoprice SW-12 400 Watt RMS Powered Subwoofer drops to $179.99 - save $220. That is 55% off the $399.99 list price and the lowest price on record for this model.

THE DEAL

Monoprice SW-12 400 Watt RMS Powered Subwoofer

$179.99 (was $399.99) - Save $220 (55% off)

WhereAmazon

ExpiresNo end date listed

Get This Price

This sub has been sitting at a 30-day average of $290.59 and a 90-day average of $298.43, making this a genuine outlier. For just $179.99, down from its list price of $399.99, you are getting the best price this subwoofer has ever seen on Amazon. At this level, it undercuts most comparable 12-inch powered subs by a wide margin.

What You're Getting

The Monoprice SW-12 packs a 12-inch long-throw driver in a ported enclosure designed to pressurize medium to large rooms. The built-in 400-watt Class D amplifier delivers clean power with rear-panel controls for volume, variable low-pass filter, and variable phase compensation.

Hookup is simple: use RCA inputs for a dedicated subwoofer output or speaker-level inputs if your amp lacks a sub out. Frequency response spans 33 Hz to 150 Hz.

Who This Is For

Best for home theater builders looking to add serious low-end without spending flagship money. Also a strong pick for music listeners who want chest-thumping bass in a living room or dedicated media room.

Skip it if you need a sealed sub for critical music listening in a treated space, or if room size is under 1,500 cubic feet where a smaller 10-inch sub would suffice.

The Caveat

This is a ported design, so placement matters more than with sealed subs. Keep it away from room corners if you want tighter, less boomy bass. The 33 Hz low end is solid for the price but won't reach the sub-20 Hz depths of $1,000-plus competition.

Final Verdict

At $179.99. This is the cheapest this subwoofer has ever been by a wide margin. If you need a 12-inch powered sub for a home theater or media room, grab it now rather than waiting for the price to climb back toward $300.