Amazon.com Product Description
Optimized for small, sealed enclosures, the Boss Audio Blade BL128 subwoofer will keep your car thumping as you cruise the streets with 700 watts of peak handling power. The 12-inch subwoofer features a 80-ounce magnet structure for a louder and deeper bass performance, 2.5-inch dual Kapton voice coil, and poly injection cone material for durability in extreme temperature variations. It has a 5.5-inch mounting depth. And it can handle 350 watts of RMS power and up to 700 watts of peak power.
Tech Talk RMS versus Peak Power: Peak power is measured by a brief musical burst (such as a crashing cymbal) and refers to the maximum amount of power that a device can produce from such a burst. However, a more reliable specification is RMS (root square mean) power, which measures the maximum continuous power that an audio device can produce. With a higher RMS figure, your music will sound cleaner as well as louder.
Product Description
Boss Audio BL128 12" 600 Watt Blade Subwoofer