MR 900 Series Brochure - JBL Professional

1 MR 900 SeriesMRPure titanium diaphragmcompression driverwith patented diamondpattern surround forclean, crisp high frequency glass woollining to neturalizeinternal Strand Board(OSB) hardwood enclo-sure material assembledwith high temperatureadhesives and clampedin a 10 ton press (patentpending).Double laquer dippedcurvilinear cone minimizes cone break-up modes forlower magnet designfor a symmetrical magnetic field, resultingin lower crossover network for seamlesstransition between system Grade Valox interlocking corner protectors and internalrubber impact edgeprotection. Intergal 35mm standmount for use withthe optional JBL modelMT4612A tripod Composite voice coil assembly forhigh structural integrityand designed highstrength diecast aluminumframes for high reliabilityunder heavy road lb magnet structure formaximum efficiency andheat guage painted steelgrille for maximum protection of low frequency bracing toeliminate enclosure by more Professional musicians aroundthe world, the JBL MR Series loudspeakers haveevolved as the industry has evolved.

2 Incorporatingthe most advanced technologies into our systems,we offer you the assurance that each speaker isconstructed with the best combination of internalcomponents available. Guided by years of experi-ence and comments from the field, we've workedhard to give you a speaker that not only performsto JBL's standard but to the increasingly discerningear of your Circuitry lets you turn yourperformance up a notch. Or the MR Series loudspeakers, loudis the operative word. And withSonicGuard Circuitry, you can pushthe level with little fear of blowing aspeaker. Offering dual protection,SonicGuard circuitry monitors sus-tained average long-term power lev-els against thermal stress and instan-taneous peaks against mechanical stress. Andunlike other protection circuitry, SonicGuard isinaudible. An indicator light on the input terminalcup illuminates when SonicGuard is activelycompressing the audio signal.

3 This allows you tomonitor your performance without interrupting 's more, because musical transients con-tribute to the character of music, SonicGuard circuitry only activates on thepeaks that threaten the high-fre-quency driver while lettingthrough non-damaging peaksunaltered. The result is clear,crisp, loud sound. HF Compression Driver built to takea beating without a highly automated construction andadvanced features, the JBL 2418H compressiondriver performs well beyond the industry stan-dard. In fact, all MR models are required by JBL tohandle their rated power for 300 hours without somuch as a buzz. The industry only requires 2 to 8hours. Advanced engineering contributes to theMR's flawless utilizes a coil curing technology that cre-ates an indestructible bond between the coil andthe Kapton coil former, eliminating the threat ofrubs or buzzes developing inthe field.

4 Plus, using Kaptonmaterial for the coil former pro-vides over twice the thermaltransfer capabilities of the morecommonly utilized its shape even underextreme heat, the Kapton Coil formeroffers worry-free reliability. A 1 millimeter thick pure titaniumdiaphragm adds crispness and clarity toyour sound as the thin metal is ultra-responsive to quick transients. To hold thediaphragm securely in place and offergreater stability at high temperatures, the MRSeries is constructed with a metal backcover. Usually found in more expensive procomponent drivers, the MR Series also uti-lizes a sophisticated annular slit phasingplug. With a 100 x 80 dispersion pattern,JBL's Flat-Front Bi-Radial horn repro-duces high frequency signals over awide coverage area. An important featurewhen a minimal number of speakers areavailable to cover a large listening area.

5 Thehorn also provides close alignment of theacoustic centers of both the compressiondriver and low frequency transducer. Theresult is superior system clarity and articula-tion, particularly in the speech cast frame low frequency transducers found in theMR Series are designed exclusively for the ensure maximum efficiency and heat dissipation for a high acoustic output, we'veused an impressive 16 lb magnet assembly. Forsolid, clean bass output, harmonic distortionelements are suppressed and controlledthrough the application of SelectiveHarmonic Geometry (SHG ) technolo-gy in the pole piece design. To signifi-cantly increase power handling, aThermoset Composite voice coilemploying a fiberglass former and ultra-high temperature adhesives was for maximum travel and linearity of thecone, MR Series features lacquer dipped curvi-linear cones for superior strength and rigidity.

6 Re-engineered for increased MR Series crossover networks are engineered to provide smooth transitionsbetween the system transducers. With steepersloped filters, the frequency bands of the drivers roll off quickly to prevent interferencebetween the two drivers. The result issmoother sound in the crossover region aswell as better off-axis sound. For convenience and versatilityof hook-up, the MR Series isequipped with both a NeutrikSpeakon input connectorand two 1/4" input jacks. What's more, theTakeyourmusic to atotally MR926 is a horn-loaded 3-wayloudspeaker with a 15" LF driver andpure titanium compression driver on a 100 x 80 Flat-Front Bi-Radial horn. With its largersize and directional wings, it delivers soundwith extra punch while directing more of thelow frequency sound to your audience. crossover network allows you to "loop through"to additional cabinets without needing to runadditional "home run" cables to the to withstand years on the road, thecrossover network is mounted on a deeprecessed terminal cup.

7 So if the speaker is accidentally pushed up against a wall or over onit's back, the connectors are protected. Built for the MR Series enclosures are fabricated ofOriented Strand Board (OSB) with features such ashardwood stiffeners, fiberglass acoustic lining,heavy-duty component mounting hardware, high-grade Valox corner protectors and exterior of the enclosures is finished in arugged pebble-finish Tolex . The speakercomponents are protected by an 18-gaugeperforated steel grille. And for use with ourM4612BK tripod, a 35mm standmount recep-tacle is the exception of the MR902 andMR905, the MR Series cabinets are designedin a trapezoidal shape to allow two or morespeakers to be splayed for wider horizontalcoverage. The corner protectors are designedwith interlocking feet so that those models ofthe same width and depth can be 2-waystagemonitorto 3-wayfull rangesystemsto the 18"subwoofer,the MRSeriesisbuilt to produce apowerful,clear, JBL sound.

8 One listenand you'll hearthe difference thatyears of experienceand technologicaladvancements canmake. The difference thatcan take your music to awhole new level. MR918An 18" low frequency transduceranchors this powerful bass volume and tuning technologywithin the enclosures are designedto optimize low-end response forsound reinforcement subwooferapplications or as the drivingbass element in a DJ playbacksystem. The extendedhigh fre-quency response also make itideal as a full-range bassinstrument speaker low profile, compact two-way system combines a 15" low frequencytransducer with a pure titaniumdiaphragm compression driver mount-ed to a on a Flat-Front Bi-Radial the MR902, the MR905 also givesyou the choice of 30 or 60 angles forincreased to provide either 30 or 60 play-back angles, the compact two-way systemfeatures a 12" low frequency transducerand a pure titanium diaphragm compres-sion driver on a Flat-Front Bi-Radial warm, realistic sound, the MR935 com-bines a 15" low frequency transducer, 8"cone midrange, and a pure titanium com-pression driver on a Flat-Front Bi-Radial horn.

9 The MR935 is extremely versatile. Itworks well as a sound reinforcement sys-tem, as a side-or front-fill monitor, on-stagedrum system or as a full-range DJ musicplayback system. MR938 The MR938 integrates a 18" low frequencytransducer, 10" cone midrange, and a puretitanium compression driver on a Flat-FrontBi-Radial horn. A larger version of theMR935, it features very warm mid-bandreproduction. Used as a sound reinforce-ment system, the MR938 is also the perfecton-stage drum system or full-range DJmusic playback system. Match withMR918 subwoofer for even greaterbass the most compact system in the MRSeries, the MR922 s small size and bigsound make it roadworthy and perfectfor speech and vocal reinforcementapplications. Mated to a subwoofer/basssystem, it offers higher level music play-back. The standmountable MR922 features a 12" low frequency transducermatched with a pure titanium compres-sion driver on a 100 x 80 Flat-Front Bi-Radial a stage speaker or a pole mountedspeaker, the MR925 is a truly great generalpurpose sound reinforcement system forspeech or vocals, full-range music playback,or reproduction of amplified musical instru-ments.

10 It's built with a 15" low frequencytransducer and a pure titanium compressiondriver on a 100 x 80 Flat-Front Bi-Radial LF driver produces strong bass output whilethe compression driver/horn smoothly dispersesmid-and high-frequencies over an optimumfield. SPECIFICATIONS 1996 JBL Professional . 8500 Balboa Blvd. Northridge, CA 91329980-00016-00 12/95 25kA Harman International CompanyTR. MR. SR. The unbeatable line-up of sound reinforcement products fromJBL Range(-10dB):Power Capacity:(Continuous Pink NoiseEIA RS426A for 8 Hours)(Peak Pink NoiseNominal ImpedanceSensitivity: 1W, 1m Nominal DispersionCrossover Network:(Crossover Frequency)(LF Low-Pass Slope)(HF High-Pass Slope):LF Driver:MF Driver:HF Driver:Enclosure Material:Dimensions:Net Weight:Shipping Weight:MR925 MR926MR935 MR938 Frequency Range (-10dB):Power Capacity:(Continuous Pink Noise)EIA RS426A for 8 Hours)(Peak Pink Noise)Nominal ImpedanceSensitivity 1W, 1m: Nominal DispersionCrossover Network:(Crossover Frequency)(LF Low-Pass Slope)(HF High-Pass Slope):LF Driver:MF Driver:HF Driver:Enclosure Material:Dimensions:Net Weight:Shipping Weight.