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Yamaha MSR400 Active Loudspeaker
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Yamaha MSR400 Active Loudspeaker


Yamaha MSR400 Active Loudspeaker

MSR400 Powered speaker, 300 watts, 12" LF; 100 watts, 2" compression driver

Great PA Sound Has Never Been Easier Or Better Looking

Much of the work in putting together a high-performance sound system involves amplifier and speaker selection and setup.

Here are a pair of solutions that can take you directly to great sound without the usual complications. The MSR400 powered speaker can be used alone or in combination with the MSR800W powered subwoofer to assemble sound reinforcement systems from modest to massive.

They look great, too. So good, in fact, that they can be used as-is in many permanent installations without requiring any cosmetic cover-up. And, of course, theyre more than rugged enough for demanding tour applications as well.

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 dont need separate external amplifiers or the extra connections required you can plug your mixers 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.


In this system, the main house speakers are a pair of MSR400s with speaker stands and MSR800W subwoofer, driven directly from the mixers main stereo and mono outputs.

The MSR400s feature punchy bass and exceptionally clear midrange that delivers vocals with outstanding quality.

The MSR800W subwoofer takes care of the ultra-lows so the audience hears – and feels – the full impact of the music.

A second pair of MSR400s is used for stage monitoring, connected via a graphic equalizer for feedback control.


The MSR400 is a bi-amplified 2-way system, featuring 400 watts maximum burst power that drives the 12" cone woofer and 1.75" V.C. compression driver.

Frequency division is accomplished prior to the power amplifiers via a line-level electronic crossover. This eliminates the problems with loss, distortion, and phase that are virtually unavoidable in conventional passive crossover networks.

Another advantage of this type of system is that power can be optimally assigned to the low-frequency and high-frequency units for optimum efficiency as well as smooth, natural balance across the entire audio spectrum.

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.

Versatile Placement

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 (theres even a pole-mount hole provided on the companion MSR800W Powered Woofer).

And its flyable so you can benefit from the unrivalled coverage and positioning precision that only ceiling suspension can provide.



  • Type Biamp. 2-way Powered Speaker
  • Crossover Frequency 1.6kHz
  • Overall Frequency Response 50Hz - 20kHz
  • Maximum SPL 121dB (1m)
  • Dispersion 90° (H)/40° (V)
  • Dimension (W x H x D) 406 x 652 x 351 mm (16" x 25-3/4" x 13-7/8")
  • Weight 23kg (50.7lbs)

  • Components LF: 12" cone
  • HF: 1.75" V.C. Compression Driver
  • Enclosure
  • Material Bass-reflex Type PP

  • Output Power Biamplified system
  • LF: 225W/ 4O
  • HF: 75W/16O
  • Burst Power: 400W Total
  • Input Sensitivity /Impedance MIC/LINE: -36dB/+4dB 10kO
  • Input/Output Connectors
  • (all parallel) 1: XLR-3-31 balanced
  • 2: XLR-3-32 balanced
  • 3: PHONE balanced
  • Controls LEVEL CONTROL, EQ. LOW: (+/- 3dB at 55Hz),
  • HIGH: (+/- 3dB at HF), POWER Switch (ON/OFF)
  • Indicators Power ON: Green LED
  • Clipping: Red LED
  • Power Requirment U/C: AC120V 60Hz
  • Power Consumption 110W
  • Get Your Yamaha MSR400 Active Loudspeaker Today!


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