Behringer's EUROLIVE VQ1500D 500W active subwoofer provides the ultimate in low-frequency reproduction, and the built-in stereo crossover makes it ideally suited for use with any of their active 2-way loudspeakers. Packed with a powerful 500W Class-D amplifier, 15' long-excursion Low-Frequency (LF) transducer and an incredible array of professional features, the VQ1500D produces extreme levels of low-end punch, with the definition and clarity typically reserved for much larger systems!Put simply, these cool-running systems are much lighter, making them ultra-easy to transport and set up “ and our no-compromise design means you get amazingly-deep, chest-pounding bass that will keep the party going all night long.Class-D - Massive Power, Perfect SoundThanks to Behringer's revolutionary Class-D amplifier technology, they are able to provide you with enormous power and incredible sonic performance in an easy-to-use, ultra-portable and lightweight package. Class-D amplification makes all the difference, offering the ultimate in energy efficiency and eliminating the need for heavy power supplies and massive heat sinks. This amazing technology makes it possible to design and build extremely powerful products that are significantly lighter in weight than their traditional counterparts, while using less energy and protecting the environment.Custom-Engineered TransducersBehringer LF and HF transducers are designed specifically for each application “ it' what sets us apart from the competition. When you buy a BEHRINGER loudspeaker, you can rest assured that the transducers inside have been engineered to perform flawlessly in conjunction with every other element for truly professional results. The VQ1500D active subwoofer is cap