Bump up the bass in your car with this 10-inch Dual DS10 subwoofer, which can handle up to 125 watts of RMS power (375 watts of peak power). It features a brushed chrome polypropylene cone, black foam surround, black stamped-steel basket, and a rubber magnet boot. Thanks to its Mid-Q design, you can use a ported or sealed box. Tech TalkRMS 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.
What's in the Box One car stereo subwoofer.../ Dual Electronics DS10 10 Inch Car Subwoofer / cars in 1963