Behringer's EUROLIVE VQ1800D active subwoofer provides the ultimate in low-frequency reproduction, and the built-in stereo crossover makes it ideally suited for use with active 2-way loudspeakers. Packed with a powerful Class D amplifier, 18 in. long-excursion, low-frequency 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. This cool-running sub delivers amazingly deep, chest-pounding bass to keep the party going all night long.

Massive Power, Perfect Sound
Thanks 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 Transducers
Behringer LF and HF transducers are designed specifically for each application. 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.

Take Control
The VQ1800D features balanced XLR inputs and outputs, as well as balanced XLR Thru jacks for connecting additional enclosures. A Boost Frequency knob targets a boost frequency between 40–90 Hz. Flick the Boost switch to give your selected frequency a +10 dB boost. The VQ1800D also has a High Cut dial that provides precision control over the upper-corner frequency of the subwoofers amplifier. The High Cut dial does not affect the Thru signals, only signals directed to the subwoofer (however, it does affect the Output socket signals sent out to full-range speakers). A Level knob controls the input gain, and the Phase switch reverses the output phase to compensate for frequency cancellation between the subwoofer and satellite speakers. LEDs show operational status at a glance, including power, signal present and input overloads.