The Yamaha NS-AW350 130W All-Weather Speaker System, in Black, are perfect for deck or porch placement, delivering punchy bass and even extended treble in just about any desired location. Their high build quality and good sound lend them equally well to two-channel indoor listening. The speakers, which are sold as a pair, each use a 6.5-inch high-compliance, polypropylene, mica-filled woofer and 1-inch PEI dome tweeter. Their acoustic-suspension cabinets are sealed to prevent undue resonance or tuneless bass. With a nominal impedance of 6 ohms, the speakers will work nicely with amplifiers up to 40 watts per channel, nominal, or 130 watts, peak power. The speakers are magnetically shielded, so you can place them on or near a TV or video monitor without fear of picture degradation from their magnetic fields. They are water resistant and designed to withstand light wind and rain, a benefit of their sealed enclosures and rugged metal grilles.