The Behringer EUROLIVE VQ1800D 18" Active 500W Subwoofer is designed for professional live sound reinforcement applications. The unit features an 18" long excursion woofer powered by an energy efficient Class-D 500W amplifier. Built-in thermal and clip limiters protect the speaker and amplifier from overloading. Externally, the box features a steel grill to protect the cone and ergonomic handles for easy transport. It includes a pole socket for mounting speakers with commercial spacer poles.
For I/O, the subwoofer features two balanced XLR Inputs, two balanced XLR outputs, and two XLR Thru jacks for connecting to additional speakers. The back panel includes a tunable and switchable +6 dB bass boost knob between 40 and 90 Hz, a phase button for inverting the polarity of the signal, a 70 to 150 Hz high frequency cut knob, and a volume control.
The high pass filter does not affect the XLR Thru circuit. A set of three LED indicator lights show power to the subwoofer, the presence of a signal, and when the limiter is engaged.
| Audio Input | |
|---|---|
| Audio Inputs | 2 x 3-pin servo balanced XLR |
| Sensitivity | +4 dBu at 0 dB (center position) for full rated power |
| Input Impedance | 12 kΩ unbalanced 24 kΩ balanced |
| Audio Output | |
|---|---|
| Audio Output | Thru A/B: servo-balanced XLR Output A/B: servo-balanced XLR |
| Impedance | 300 Ω unbalanced 600 Ω balanced |
| High-Pass Filter | 100 Hz, butterworth with 18 dB slope |
| Controls | |
|---|---|
| Level | -∞ to +6 dB |
| Boost and Cut | Boost (Switchable): 40 to 90 Hz, +10 dB Cut (Switchable):70 to 150 Hz, Butterworth, 24 dB slope |
| System | |
|---|---|
| Frequency Range | 45 to 200 Hz (-10 dB) |
| Frequency Response | 60 to 150 Hz (± 3 dB) |
| Signal-to-Noise Ratio | >100 dB |
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