The Yamaha MSR400 Powered Speaker is a bi-amped two-way speaker cabinet with the power amps built right in! It uses a 225W amp to power the 12” woofer and a 75W amp to power the 1.75” compression driver. Traditionally, much of the work in putting together a high-performance sound system involved getting the proper components and getting them to work together optimally, especially matching the proper power amplifier with your speakers. Yamaha has taken a lot of the guesswork out of the process with the introduction of their MSR400 powered speakers. With a frequency range of 50Hz to 20kHz and a max. SPL of 121dB, the MSR400 can really fill a room! I/Os include XLR and 1/4” TRS connections. It is also equipped with a 2-band EQ. The matching 500W MSR800W powered subwoofer has a built in high pass filter so that you don’t have to use an external crossover when you use the MSR 400 and the MSR800W together.
The Case For Built-in Power
Whether for use on the road or in permanent installations, powered speakers offer numerous advantages over their separate counterparts. The most obvious is that you don’t need separate external amplifiers or the extra connections required – you can plug your mixer’s outputs directly into the speaker inputs. In a modest-size system this alone can eliminate an entire rack of amplifiers. But there are sonic advantages as well. Optimum matching of amplifiers and speakers involves much more than simple impedance figures, and can be a formidable engineering task given the vast number of choices available. In the Yamaha MSR400 and MSR800W the internal amplifiers have been ideally mated to their respective speakers in every way possible, delivering reproduction quality that only such stringent matching can achieve.
Wide Input Range & EQ Control
The MSR400 accepts nominal input levels ranging from –36 dB to +4 dB, meaning that you can directly connect any source from microphones to professional line-level gear. Three parallel-connected connectors are provided – two balanced XLR-type connectors and one balanced phone jack – that can be used as either inputs or parallel outputs. The MSR400 also features an input level control for matching with the source signal. Low and high EQ controls can be used to adjust the respective bands over a plus-or-minus 3dB range.
Speaker placement is as much a performance issue as it is a convenience and aesthetic issue. Proper placement will give you optimum sound as well as coverage while being as unobtrusive as possible. Of course, the more options you have the better. The MSR400 can be stacked or pole-mounted (there’s even a pole-mount hole provided on the companion MSR800W Powered Woofer). And it’s flyable so you can benefit from the unrivalled coverage and positioning precision that only ceiling suspension can provide.
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