Nominal impedance shall be 8 ohms and power capacity shall exceed ... data from a recognized independent test laboratory verify that the above performance ...
JBL model 2150 is a complete two-element system made up of a controlled-excursion 15” low frequency transducer and separate heavy duty high frequency radiator, acoustically integrated and mounted on a single chassis. It is ideally suited for high-level distributed systems for convention centers, auditoria, ballrooms, and other installations requiring natural sound reinforcement with full dynamic range and uniform coverage. Wide dispersion and high power capacity mean that fewer transducers are required to cover a given area.
TradItIonal JBL engineenng and quality standards result in a highly efficient system which can produce a sound pressure level greater than 100 dB at a drstance of 30 feet. Peak free response permits greater gain before acoustic feedback Model 2150 is extremely versatile It can be front or rear mounted, and will deliver excellent results In enclosures having 4 to 6 cubic feet internal volume The unit will operate properly when combined with the JBL 3125 frequency dividing network or when used in bl-amplified Installations.
Model 2150-W’Composite Architectural
Transducer
Specifications
The transducer shall be of the two way composite type incorporating two linear transducers on a single 15” frame. The frame shall be of cast aluminum to resist deformation. Both magnetic assemblies shall use Alnico V encased in a heavy cast iron return circuit for maximum efficiency and suppression of stray fields. The low frequency voice coil shall be four inches in diameter and shall be made of edgewound copper ribbon operating in a magnetic field of not less than 11,500 gauss. The high frequency voice coil shall be % inches in diameter and shall be made of edgewound copper ribbon operating in a magnetic field of not less than 16,500 gauss. The high frequency radiator shall be mounted in the same plane as the low frequency radiator. The dividing network shall be separately mounted. Performance specifications be as follows:
of a typical
production
unit shall
Measured sensitivity (SPL at 30 ft. with 1 mW input, swept 500-2500 Hz) shall be at least 51 dB on axis. As an indication of electromechanical conversion efficiency, the BI factor shall be at least 5.60 x lo6 dynes/abampere for the H.F. section, and at least 2.05 x IO7 dynes/abampere for the L.F. section. Useable frequency response shall extend from 30 to at-least 14,000 Hz. Response, measured 45” off-axis at a distance of six feet or more under free-field conditions, shall be within k2.5 dB from 50 to 4,000 Hz. The distribution pattern of this device shall be interpreted to mean that sensitivity measured 45” off-axis shall not be reduced more than 6 dB from the onaxis measurement. Nominal impedance shall be 8 ohms and power capacity shall exceed 50 watts normal speech or music program material. Crossover frequency shall be 1200 Hz, and the dividing network shall be supplied separately. The transducer shall be JBL model 2150. Other loudspeakers will be considered for equivalency provided that submitted data from a recognized independent test laboratory verify that the above performance specifications are met.
JBL ProfessIonal
q:
Products are not Intended for household
use
-_
Professional Series
Professional
Division
James B. Lansing Sound, Inc., 8500 Balboa Boulevard,
Nominal impedance shall be 16 ohms and power capacity shall be at least 30 ... submitted data from a recognized independent test laboratory verify that the ...
The AES takes no responsibility for the contents. Additional papers ... array are arranged in a straight line while the lower elements are arranged to point .... Note that the maximum pressure at any given distance and frequency may ..... dominates t
overall depth not greater than 191 mm (7% in). and weigh at least 13.6 kg (30 lb). The frame ... Rated power capacity shall be at least 600 W normal program ...
Additionally it is desired that the line array take on different vertical patterns dependant upon use. This requires the .... energy at 100 meters in the high end would probably be offset by air ..... 10 degrees. Note irregularity at high frequencies
Tooling is made from the same CAD file used to make the prototype. This assures final performance equals the initial prototype. Figure 12 shows the production ...
Nominal impedance shall be 16 ohms and power capacity shall be at least 30 ... submitted data from a recognized Independent test laboratory verify that the ...
The loudspeaker shall have a nominal diameter of 200 mm. (8 in), overall depth not ... submitted data from a recognized independenttest laboratory verify that ...
conditions, and application of scientific principles to ... JBL has developed a software application that ... A Microsoft Excel⢠Line Array Calculator program has ...
Measured sensitivity with a Ä°mW input on 25 mm II ini terminated tube,. VEFHud IFHA 50 Hz ... parts assure greater resistance to mechanical shock. Diaphragm ...
Model 2215 is a professional quality low frequency loud- speaker capable of handling high power with negligible distortion. Overall sensitivity is controlled to ...
system. By dividing the audio spectrum before power am- plification, treble tones are separated from, and unaffected by, bass frequencies. The result is more ...
number of mathematical equations. ... music reinforcement, the mass break-point is in the 3500 voice coil .... extension of the theory verified here to show that the.
Speech Intelligibility - A JBL Professional Technical Note. 1. ... and sports venues takes on greater impor- .... speech power is in the 250 and 500 Hz bands,.
edge-wound aluminum ribbon voice- coil motor structure. ... Composite octave polar responses of the 2155H in both horizontal and vertical planes over the ...
The low frequency transducer shall have a nominal diameter of 380 mm 115 InI, ... submitted data from a recognized independent test labora- tory verify that the ...
Nominal impedance shall be 16 (8) ohms and powercapacfty shall be at least 60 watts ... submitted data from a recognized independenttest laboratory verify that ...
or other similar applications where high sound power output and smooth low frequency response are requrred All are ruggedly constructed of dense, high ...
Though the world of music is continually evolv- ing, there are a few constants. And in terms of sonic characteristics, the definitive sounds pro- duced by the ...
7. MPRO 400 SERIES MODELS. MP410 - 10 , two-way, bass-reflex. Main PA for speech, vocals and instrument reinforcement. A great choice as a satellite over the MP418S or MP418SP for dance music and DJ use. Get professional quality and performance from
A review of the literature reveals that the polar response of a line source is generally ..... is chosen to be coincident with the leading edge of the arc at the top.
Route cables so that performers, production crew, and audience will not trip over them pulling the speaker over. • Do not .... roder les contacts électriques.
for multichannel sound presentation. In this. Technical Note, we will present a history of multi- channel ... in this fashion. ... multichannel sound during the 1960's.
