Behringer Eurolive B1500D-Pro is a brand new active 1400watt Subwoofer with built in crossover and Class D amplification. Instead of operating relatively continuously like Class AB circuits, Class-D amps switch on and off thousands of times per second, delivering power only when needed. In other words, the amplifier is either fully on or fully off , which significantly reduces power losses from the output devices given off as heat. Less heat means Behringer's amps don’t need massive heat sinks, and that means the speakers can be lighter. Behringer's no-compromise design means the B1500D-PRO and B1800D-PRO will deliver full power with incredible fidelity all night long, without the need for lengthy rest cycles.
When used in conjunction with switching-mode power supplies, which don’t require huge and heavy transformers, Behringer's Class-D amplifiers provide tremendous dynamic punch and superior fidelity. The resulting speaker systems are much lighter, making them easy to transport and set up.
The transducers (woofers and tweeters) are the only part of a sound system you actually hear, so Behringer don’t cut any corners. Behringer custom-design and built their transducers from scratch. Not only do they wind their own voice coils, Behringer process the paper pulp into cones and even machine their own backplates. This enables Behringer to control the quality, and frankly, make better components.
The B1500D-PRO and B1800D-PRO feature 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 45 Hz and 90 Hz. Flick the BOOST switch to give your selected frequency a +6 dB boost. These subs also feature a HIGH CUT dial to control the upper corner frequency for the subwoofer’s amplifier. The HIGH CUT dial does not affect the THRU signals, only signals directed to the subwoofer (however, it does affect the signals sent out through the Output sockets of the subwoofer to reach the full-range speakers). A LEVEL knob controls the input gain, and the PHASE switch reverses 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.