Musical Instrument Loudspeakers - JBL Professional

1 Musical Instrument Loudspeakers Syfrmefncal magnet/c held _ _ mmefncal magnehc The new JBL MI Series Loudspeak- . ers are engineered with the latest advances in transducer design and technologies to give you response that is flat and even .. in tune with the sound of the 80's. They let you add the color you want. And, they give you the satisfaction of knowing you're using the world's most popular line of speak- ers for producing your music. A careful evaluation of the Ml Series proves they give you a lot more. The Cross-sections of JBL (left) and conventional magnetic structures. frames are die . not cheap stamped baskets. A die cast frame The voice coils are fabricated from If you're looking for a speaker that provides a better heat-sink allowing special wire that has been milled into a will let you produce today's music, lis- greater power handling and because a flat ribbon. Flat wire can be wound ten to the Ml Series at your JBL dealer.

2 Die cast frame can't flex, it reduces more tightly than round wire, putting The Ml Series Loudspeakers are avail- resonances from the frame. more conductor (wire) in the gap. The able in lo , 12 and 15 models. Their design is more efficient and more efficiency and power capacity are rugged. greater than many extended range The voice coils are precision flat speakers in their size giving wound, in four layers with staggered you outstanding dynamic range and seams. This construction is physically extremely high accuracy. Use the Ml very strong and resists deformation Series speakers for your guitar, key- from heat. The result is greater effi- board, or system. They directly ciency and increased power handling. replace conventional speakers used in The Ml Series Loudspeakers feature guitar amplifiers, organs, electric pi- JBL Symmetrical Field Geometry anos, or other applications. (SFG) magnetic structure, a design Combine the new Ml Series loud- that contributes to the clean sound.

3 Speakers with all new cabinet designs Typical magnetic structures, with non- and JBL expertise in system design symmetrical magnetic fields, add and you have the all new Ml Series significant amounts of distortion Component Systems. because of the nonlinear pull such a field exerts on the voice coil. (See JBL ribbon-wire voice coil. illustration). MI Series Loucheakers and Svstems JBL MI Series Features forcement in small to moderate sized rooms. The systems feature JBL's Flat-Front Bi-Radial Horn/Titanium specially designed flat-front Bi-Radial Diaphragm Compression Driver horn and compression driver mounted L' Specifically designed for the MI flush in the cabinet to eliminate the Series Compact Sound Reinforce- problems of midrange narrowing and ment System to provide excellent on- high frequency beaming associated and off-axis frequency response in the with conventional horn designs. The horizontal plane. It has 90 horizontal x directional baffle enclosure increases 40 vertical nominal coverage, with directivity for greater mid-range uniform on- and off-axis frequency punch, and low-frequency venting response in the horizontal plane from extends bass response and lowers 630 Hz to beyond 16 kHz.

4 The high distortion. frequency driver features a titanium The cabinets are optimally tuned diaphragm with JBL's patented dia- JBL's titanium-diamond diaphragm combines performance with reliability enclosures engineered specifically for mond-pattern surround. The excep- each intended application. tionally high stress limit of titanium And, they're built to take the rigors of together with the stronger surround Frequency Dividing Network the road. The cabinets are constructed allows this design to achieve the per- The frequency dividing network with a new wrap-and-fold technology, formance of more expensive and frag- used in the MI Series Compact Sound using a high density wood-resin com- ile exotic materials. The driver uses a Reinforcement System uses the high- pound for maximum strength and are high energy strontium ferrite magnet est quality electronic components- covered with durable industrial-grade, for maximum efficiency and extended non-inductive, non-polarized mylar reinforced pebble grained material.

5 Response capacitors and air-core inductors and Corners are protected with heavy are tailored to optimize the crossover response. MI Series Component Systems The Ml Series Component Systems are the easy, Professional way to give your audience the sound they Composite %-octave polar responses of a flat deserve. front Bi-Radial horn from 800 Hz-16 kHz in the Newly engineered for music re- horizontal plane. production and general sound rein- MI-631 - hi-632~ - MI-630 features the patented JBL flat- Model Ml-634 Direct-Radiator front Bi-Radial' horn and compres- Sound System sion driver mounted flush in the cabi- The Ml-634 Direct-Radiator Sound net to eliminate the problems of System is a newly designed vented midrange narrowing and high fre- enclosure system using the JBL Flat- quency beaming associated with Front Bi-Radial' horn and compres- conventional horn designs. sion driver and the new Ml-l 5A 380. mm (15 ) low frequency driver to pro- MI-631 Stage Monitor vide smooth, uncolored response and Smooth, wide frequency response wide bandwidth with bass response (60 Hz-l 5 kHz), uncolored reproduc- down to 50 Hz and high-frequency tion, and high directivity make this an response to 20 kHz.

6 The smooth, ideal stage monitor, acoustic instru- natural sound of the Ml-634 makes it ment system or even a small general ideal for vocal and acoustical instru- purpose vocal reinforcement system. ment reinforcement and general gauge . Professional , recessed The system uses the Ml Series 12 inch sound amplification in small to mod- road handles lock in place to prevent loudspeaker and flat front Bi-Radial' erate sized rooms. unwanted vibration and noise during a horn and compression driver.. input and output jacks MI-291 High Frequency Power Pack are recessed for protection. Naturally, MI-632A Horn-Loaded Sound The MI-291 System offers the JBL. the drivers are protected by a heavy System Flat-Front Bi-Radial' horn and mesh screen. The MI-632A is a newly re-designed compression driver as a separate add- Audition the JBL Ml Series Systems system and features the new Ml-l 5A on system which allows simple instal- at your JBL dealer.

7 Their flexibility 380 mm (15 ) woofer with its copper lation to existing systems. makes them ideal for most of your ribbon voice coil, giving the MI-632A. sound reinforcement applications. balanced bass with a smooth and con- trolled sound. A three-position HF. MI-630 Vocal Reinforcement level control switch allows precise tai- System loring of the tonal balance between Newly designed for vocal reinforce- horn and woofer. ment and general music reproduction MI-ZY I. in small to moderate sized rooms. The Model MI-630 and Ml-634 include integral mounting hardware for use with the tubular aluminum tripod stand, Model MT-4612. I MI-W4 - MI Series Specifications MI Series loudspeaker Specifications Specifications MI-l0 MI-1 2 MI-15A Thiele-Small Parameters Ml-l 0 Ml-l 2 MI-15A. Nommal Diameter 250mm 300mm 380mm f, W-4 75 65 40. 10 in 12 I 15 I . R, (ohms) Nominal Impedance 00_ 8R 0R. Qts .33 .46 Power Capacbty 150 W Qms AES or EIA Shaped Noise 150 W 150 W.

8 98 dB SPL 100 dB SPL 102 dB SPL Qes Sensitivity * 1 W @ 1 m ( ft). Frequency Range 70-8000 Hz 60-7000 Hz 40-6000 Hz vas (L) 35 75 270. (cu ft) Voice Coil Drameter 51 mm 51mm 51 mm 2 in 2 I 2 I Sn (m*) ,034 ,055 089. - (in') 138. Votce Co11 Matenal -Alumrnum Rrbbon - Copper Rrbbon Xmax (mm) 3 3 4. Magnetrc Assembly Werght kg kg kg 5% Ibs. 5% Ibs. (In) .12 .12 5% Ibs. VD (cm? 100 165 356. Flux Density tesla tesla tesla (in3) (10,500 gauss) (10,500 gauss) (10,500 gauss). f-e (mH) Frame Material Diecast Aluminum ~0 (Half space) (%) Baffle Cutout Diameter Front or Rear Mount 22t3mm 281mm 351mm 9 I 11-1161 13-13116 in Depth 116mm 137mm 162mm 4% I 5% I 6% in Net Wetght kq 3 ka ko 6 Ibs: 6%-lbs. 7 Ibs: *Sensitivity measured with an input averaged from 500 Hz to kHz MI Series Component System Specifications Frequency Power Capacity Sensitivity'. Range (Continuous (Continuous Nominal 1 W, lm Nominal Crossover Exterior Dimensions Net Model (-IOdB) Pink Noise) Program) Impedance ( ft) Dispersion Frequency (Height x Width x Depth) Weight MI-291 5 kHz 150w 300 w 8 ohms 127mm x 387mm x 248 mm kg 105dB 90h x 4Ov kHz 5 in x 15% rn x 9% rn 10 Ibs MI-630 60 Hz-l 5 kHz 150w 300 w 8 ohms 533mm x 454mm x 287mm 22 kg IOOdB 90h x 40~ kHz 21 in x 17'/8 in x 11% rn 48 Ibs i MI-631 60 Hz-l 5 kHz 15ow 349mm x 434mm x 530mm 21 kg 300 w 8 ohms 1 OOdB 90h x 4Ov 2 kHz 13% m x 17% In x 207/8 rn 46 Ibs MI-632A 45 Hz-15 kHz 150w 826mm x 61 Omm x 445mm kg 300 w 8 ohms 104dB 90h x 4Ov kHz 32% rn x 24 in x 17% rn 100 Ibs Ml-634 40 Hz-l 5 kHz 150w 300 w 8 ohms 686mm x 559mm x 292mm 34 kg 102dB 90h x 4Ov kHz 27 in x 22 rn x 11% in 75 Ibs Sensltlvrty measured with an Input averaged from 500 Hz to 2 5 kHz)