Behringer VQ1800D Active 500-Watt 18" PA Subwoofer

Here's What Behringer say: 

EUROLIVE VQ1800D

Our EUROLIVE VQ1800D 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, 18" long-excursion Low-Frequency (LF) transducer and an incredible array of professional features, the VQ1800D 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 Sound

Thanks to our revolutionary Class-D amplifier technology, we 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 Transducers

Powerful, high-efficiency Class-D amplifiers and Switch Mode Power Supply technology coupled with state-of-the-art DSP functionality sure sounds impressive – but what about the part of the system you actually hear? Our LF transducers are designed specifically for each application – it’s what sets us apart from the competition. When you buy a BEHRINGER active subwoofer, you can rest assured that the transducer inside has been engineered to perform flawlessly with every other element for truly professional results. The VQ1800D active subwoofer is capable of extremely high sound pressure levels: 124 dB (Full Space, 1 W @ 1 m), with a frequency range of 40 - 200 Hz.

Features 

• Professional 500-Watt powered subwoofer for PA applications
• Powerful 18'' 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
• Tuneable 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
• 3-Year Warranty Program*
• Designed and engineered in Germany