M2
Master Reference Monitor


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M2 Master Reference Monitor
Addressing the growing need for high dynamic range and reference-monitor accuracy in a broad range of studios, JBL has developed the M2 Master Reference Monitor: A Free-Standing, 2-Way System that can be placed in any environment to provide an exceptionally accurate monitoring experience. Leveraging a new generation of JBL high-output, ultra-low distortion transducers, the M2 provides in-room frequency response of 20 Hz to 40 kHz, and an extraordinary 123 dB maximum SPL to meet the demanding music, cinema and broadcast production requirements for impactful dynamic range.

FEATURES
  • The Ultimate High Frequency Driver for Critical Reference Monitoring Extended HF Reproduction Smooth Response High Power Handling Measurably Lower Distortion Reduced Power Compression Increased
    Dynamic Headroom
  • Exceptional Low Frequency Extension, High Output, Very Low Power Compression, Very Low Distortion
  • Impressive Imaging and Sound Stage, Exceptional High Frequency Detail, Uniform Directivity for Smooth In-Room Response, Patent Pending Design
  • LSR Linear Spatial Reference Design
  • Small Footprint, Extended Bass Performance, Patented Low Frequency Port Design

TECHNOLOGY


D2 DUAL DIAPHRAGM DUAL VOICE COIL COMPRESSION DRIVER
The Ultimate High Frequency Driver for Critical Reference Monitoring, Extended HF Reproduction, Smooth Response, High Power Handling Measurably Lower Distortion, Reduced Power Compression, Increased Dynamic Headroom

DIFFERENTIAL DRIVE® TECHNNOLOGY
Enhanced Performance and Exceptional Low Frequency Extension, High Output, Very Low Power Compression, Very Low Distortion
Achieving extended, rich low frequency performance within the M2 system design parameters required additional JBL engineering innovations, and the 2216Nd in the M2 is no “off-the-shelf” woofer. It employs no less than five patented technologies to allow bass extension to the limits of the audible range, and high output, free of power compression that is detrimental to a system’s low frequency performance. Echoing the “dual driver” design of the D2, the 2216Nd utilizes dual neodymium magnets and two voice coils. To ensure the ultimate performance, even the use of special wire in the 2216 voice coils is a JBL patented application.

IMAGE CONTROL WAVEGUIDE
Impressive Imaging and Sound Stage, Exceptional High Frequency Detail, Uniform Directivity for Smooth In-Room Response
To support an imperceptible transition between the two drivers, and deliver exceptional imaging, JBL engineers pioneered a new patent-pending waveguide design that enables neutral frequency response, not just on-axis, but off-axis in the vertical and horizontal planes, all the way down to the M2’s 800 Hz crossover point.

LSR LINEAR SPATIAL REFERENCE DESIGN
We all know that many loudspeakers have similar measurements but sound different. By going beyond simple on-axis frequency response measurements, JBL defines the ultimate performance specification for new systems – what it will sound like in your room. At the mix position, you hear a combination of direct sound and sound reflected from the rooms surfaces. For sound arriving at the mix position to be smooth and neutral, it is not enough for a speaker to measure “flat” on-axis; it is essential the speaker have excellent off-axis performance.

M2 ENCLOSURE
Small Footprint, Extended Bass Performance, Patented Low Frequency Port Design
Extended low frequency performance and high SPL can be the formula for unwanted resonance. The M2 enclosure is constructed of rigid 1" MDF and with the aid of JBL’s interferometer, extensively braced for rock-solid stability at the system’s full rated power. The enclosure incorporates a JBL patented Slipstream port design with internal flares that ensure low frequency efficiency while eliminating noise caused by port turbulence. Architecturally elegant, the M2 enclosure occupies a relatively small footprint, and can be transported to various working environments.


SYSTEM INTEGRATION


System Integration
While offering exceptional accuracy “out of the box,” the power of the M2 is fully realized with its intelligent in-room tuning and integration capabilities, ensuring optimum performance in your listening environment.

SPECIFICATIONS
System Format 2-Way Floor Standing or Soffit Mountable
High Frequency Model D2430K Dual Diaphragm Dual Voice Coil Compression Driver
Low Frequency Model 2216Nd 15 in (381 mm) Differential Drive® Woofer
Crossover Frequency 800 Hz
Frequency Range 20 Hz - 40 kHz
Image Control Wave Guide Dispersion 120° H x 100° V
Sensitivity 1W/1m SPL 92 dB
Continuous/Peak SPL@ 1m 117 dB /123 dB; 108 dB Peak SPL @ 8m
The System Requires One Crown® iTech 5000HD power amp for each speaker, or BSS® Soundweb London Processor with Crown Macro-Tech® MA-5000i
Recommended Amplifier Power 1,200 Watts into 8 ohms
Input Connectors Spring Terminals
Enclosure Construction 25 mm (1 in) MDF
Finish Satin Black Lacquer
Included Removable ABS Grille with Black UL Compliant Fabric
Dimensions (W x H x D) 508mm x 1256mm x 355.6mm (20in x 49.5in x 14in)
Weight 58.5 kg (129 lb)


Belmont University Reopens Legendary Columbia Studio A with HARMAN’s JBL M2 Master Reference Monitors

by JBL Professional | Jan 19, 2015
As befits its Nashville location, Belmont University has close ties to the music industry—its Mike Curb College of Entertainment and Music Business (CEMB) is the world’s only AACSB (Association to Advance Collegiate Schools of Business)-accredited Music Business program as well as the first ABET (Accreditation Board for Engineering and Technology)-accredited Audio Engineering Technology program.



NASHVILLE, Tennessee — As befits its Nashville location, Belmont University has close ties to the music industry—its Mike Curb College of Entertainment and Music Business (CEMB) is the world’s only AACSB (Association to Advance Collegiate Schools of Business)-accredited Music Business program as well as the first ABET (Accreditation Board for Engineering and Technology)-accredited Audio Engineering Technology program. Among its numerous activities the school runs four professional-quality recording studios on campus, the historic Quonset Hut Studio, Ocean Way Nashville Studios—and now, the recently renovated Columbia Studio A, equipped with HARMAN Professional’s JBL M2 Master Reference Monitors.

 

The JBL M2 Master Reference Monitor is a 2-way powered large-format loudspeaker that sets new standards for sonic accuracy and dynamic range in professional monitoring environments. It incorporates JBL’s latest transducer and acoustics technologies including the newly developed D2 dual-diaphragm, dual-voice-coil compression driver, the Image Control Waveguide, the 2216ND Differential Drive™ dual-voice-coil woofer and numerous additional refinements to deliver exceptional studio monitor performance with remarkable detail, full-range frequency response from 20Hz–40kHz, spatial accuracy and wide dynamic range free of power compression.

Opened in the 1960s, the historic Columbia Studio A recorded many of music’s greatest artists, including Bob Dylan, Johnny Cash, Simon and Garfunkel, George Jones, and many more. However, by the early 1980s it had been converted into an office space. Thanks to the efforts of Belmont University and a donation by the Mike Curb Foundation, Columbia Studio A is making music again as a multi-purpose space for classes in recording studio engineering and sound reinforcement. It also hosts workshops and seminars for a variety of university activities and organizations like the Audio Engineering Society (AES) and the US Copyright Office.

“In order to serve our academic requirements, Columbia Studio A features a wide variety of recording equipment dating from the 1960s all the way to the present, as evidenced by our purchase of the JBL M2 monitors,” said Michael Janas, Instructor, Audio Engineering Technology and Director of Recording Studio Operations at Belmont University. Studio A boasts an eye-popping assortment of restored vintage and modern cutting-edge gear, all routed through an API split monitor console that once resided in the RMU-2 mobile recording truck of recording pioneer, Walley Heider.

“In restoring Columbia Studio A, one of the goals was to let students experience the evolutionary roots and the historical and technical context of multi-track recording studio technology as we know it today,” Janas stated. “In order for the students and faculty to best hear and understand the aural characteristics of this wide range of equipment, it was important to choose a modern monitoring system that would best reproduce the sound of the source audio in our new ‘old’ studio.”

Janas turned to the project’s acoustical consultant, Dave Rochester of Lebanon, Tennessee’s Technical Audio Services, for advice. Rochester recommended Janas consider the JBL M2. Janas and his team did their homework, ultimately consulting with JBL Professional and the staff at Guitar Center Pro (GC Pro) in Nashville. They liked what the saw and heard and in January 2014 finalized the decision to purchase a pair of M2 monitors and a Crown I-Tech HD Series 4x3500HD amplifier to power them. The Crown amp provides four channels of amplification for the pair of bi-amplified M2s and its internal DSP provides the crossover and also room EQ to optimize the M2 system performance in any room.

“The JBL M2 is stunning in its ability to present fine detail,” Janas pointed out. “The outstanding imaging of the speaker is by far one of my favorite attributes of the system. The M2 not only provides a wide stereo sound field but also depth and height. It’s made a significant impact on everyone who’s heard it.” Designed specifically for the M2, JBL’s Image Control waveguide enables a seamless crossover transition between the woofer and high-frequency driver while delivering extraordinary imaging and rich musical detail to a broad area of the room.

“The M2 turned out to be absolutely perfect for our application. It enables students and staff to hear everything that’s going on in the studio with exacting detail. It reveals the sonic characteristics of every piece of gear we add or take out of the recording chain, whether a microphone, reverb unit, EQ or other link in the recording chain. In fact, it showed us that some of that vintage gear is a lot better than anyone realized.”

HARMAN (www.harman.com) designs, manufactures and markets premier audio, visual, infotainment and enterprise automation solutions for the automotive, consumer and professional markets. With leading brands including AKG®, Harman Kardon®, Infinity®, JBL®, Lexicon®, Mark Levinson ® and Revel®, the Company is admired by audiophiles, musicians and the entertainment venues where they perform. More than 25 million automobiles on the road today are equipped with HARMAN audio and infotainment systems. HARMAN has a workforce of approximately 16,600 people across the Americas, Europe, and Asia and reported sales of $5.6 billion for the 12 months ended September 30, 2014.

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- Press Release PDF -


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