Our EUROLIVE VQ1500D 500-Watt active subwoofer provides the ultimate in low-frequency reproduction, and the built-in stereo crossover makes it ideally suited for use with any of our active 2-way loudspeakers. Packed with a powerful 500-Watt 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. • Professional 500-Watt powered subwoofer for PA applications • Powerful 15'' long-excursion transducer with high temperature voice coil provides incredibly accurate and pulse-pounding bass • Precise reproduction of ultra-low frequencies for "bulletproof" punch and impact • State-of-the-art 500-Watt Class-D amplifier with comprehensive over-excursion, thermal and clip limit protection • Built-in active stereo crossover provides high-pass filtered outputs for full-range loudspeakers • Tunable and switchable Bass Boost plus Phase switch for ultimate low-frequency performance • Variable High Cut control for perfect sound alignment • Subwoofer Level control to adjust the balance between subwoofer and the full-range speakers • Power, Signal and Clip LEDs for perfect monitoring • Intelligent limiter for maximum sound performance and woofer protection • Internal switch-mode power supply for noise-free audio, superior transient response and very low power consumption • Pole socket for mounting with commercial spacer poles • Ergonomically shaped handles for easy transport • Rugged steel grill for optimal speaker protection • Designed and engineered in Germany