"Behringer Eurolive B312d 12"" 2-Way Speaker"

One of the coolest things about active loudspeakers like the Behringer EUROLIVE B312D is the lack of all the backbreaking racks of amps, crossovers, and EQs that are often required to make passive systems sound almost as good. But that comes with a trade-offthat extra weight is usually transferred to the loudspeaker, making it difficult for a single user to heave all that mass onto a speaker stand. By utilizing switch-mode power supplies and Class-D amplifier topology, however, the Behringer EUROLIVE B312D loudspeaker provides 28% more output power (550-Watts) and still weighs 10% less than Behringer's best-selling B312A system. Sound quality is also improved, thanks to an integrated sound processor, which provides total system control, dependable protection of the transducers (woofer and tweeter) and virtually eliminates distortioneven at extreme operating levels. In addition, it features an Ultra-Low Noise (ULN) MIC/LINE input with LEVEL control and a dedicated 2-band EQ (HIGH/LOW) for simple, yet effective tonal control.What is Class-D Technology?Instead of operating relatively continuously like Class AB circuits, the Class-D amps inside the Behringer EUROLIVE B312D 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 no need for massive heat sinks, and that means which means a much lighter product. Behringer's no-compromise design means your Behringer EUROLIVE B312D loudspeaker 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 result is a speaker systems that is much lighter, making it easy to transport and set up.Processor-controlled OutputDynamic processing is one of the best ways to maximize output without sacrificing sound quality. The Behringer EUROLIVE B312D's built-in circuitry automatically adjusts program content, allowing the loudspeaker to operate at extreme levels. It accomplishes this by reducing bass output slightly as you approach the limit of the transducers. This frees up LF (Low Frequency) amp and transducer resources, so that higher overall volume can be realized. It's like having a tiny soundman inside your cabinet constantly monitoring and tweaking output parameters.Instant PA SystemWith just a single Behringer EUROLIVE B312D loudspeaker and a microphone, you can set up an instant PA systemand you don't need an external mixer to do so. Thanks to the built-in mic preamp, you can connect any dynamic mic directly to the input and raise and lower the volume with the Level control. Just plug in the mic, place your Behringer EUROLIVE B312D on a tabletop or standard speaker stand, and p