JBL 4311 - Specifications

Specifications
JBL continually engages in research related to product rnprovement. New
mater&, production methods and design refinements are introduced into
Power Capacity’ 75 W continuous program
existing products without notice as a routine expression of that philosophy For
this reason. any current JBL product may differ in ?.cnne respect from its
Crossover Frequencies 1.5 and 6 kHz
publIshed description but will always equal or exceed the original design
specifications unless otherwise stated.
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Nominal lmpedence an
High Frequency Drspersron 90” honzontal and vertrcal
Frequency Response 45 Hz 15 kHz ?3 dB
Sensitivity* 91 dB, 1 W, 1 m (3.3 ft)
42 dB, 1 mW, 30 ft (9.1 m)
DIstortron
r/z Power, 95 dB
SPL/B m (IO ft).
Srngle Frequency
Less than 1% thrrd harmonrc
generatron from 100 Hz to 15 kHz
Finish
Textured gray or oiled walnut
Grille
Dtmensrons
Black fabrrc
597 mm x 362 mm x 296 mm deep
23% In x 14% In x 11x/4 In deep
Net Weiqht
19 ka
42 lb
Shrpprng Werght
22 kg
49 lb
‘Continuous program power IS defined as 3 dB greater than continuous we
wave power (RMS) It IS a conservatwe expression of a loudspeaker system’s
ability to handle normal speech and muw program material
‘Measured with input swept from 500 Hz to 2 5 kHr with controls set for flattest
response Unlike many ‘theater type’ loudspeaker systems that exhlb!t
sensltlwty peaks in the mldrange, the JBL Control Mcnxtor provtdes substantially
the same senswty through the full range of audible frequenctes Measured
sensltlvlty below 500 Hz or above 2 5 kHz may be cowderably greater than that
of other systems with higher sens~t~wty ratings
Professional Division
James B. Lansing Sound, Inc..
8500 Balboa Boulevard,
Northridge, California 91329 USA
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PPB4311/5-78 PrInted I” u S A