JBL Professional High Output Indoor/Outdoor Background/Foreground Speaker Control 28 دليل المستخدم

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High Output
®
Indoor/Outdoor
Control 28 Background/Foreground Speaker
Professional Series
Key Features:
c Components: 8” Polypropylene
coated woofer, 1” Titanium coated
horn loaded tweeter.
TM
c Built-in InvisiBall mounting
hardware*
c Weather resistant enclosure and
transducers
c Readily paintable
c 90° x 90° high frequency horn
c Overload Protection Circuitry
c Sensitivity: 92 dB SPL, 1W, 1m
*Patents pending worldwide
®
The Control 28 is the largest of
JBL Professional’s Control Contractor
Ser

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® c Control 28 High Output Indoor/Outdoor Background/Foreground Speaker Frequency Response in half-space (2p, solid line) and full-space (4p, dotted line), and Input Impedance Beamwidth Directivity Index, Q Horizontal Off Axis Frequency Response Vertical Off Axis Frequency Response (up) Vertical Off Axis Frequency Response (down)

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Horizontal 1/3 Octave Polars Architectural Specifications: The loudspeaker shall consist of a 200mm (8 in) low frequency trans- ducer, 25mm (1 in) high frequency transducer, and frequency dividing network installed in a ported enclosure. The low frequency voice coil shall be 32 mm (1-1/4 in) in diameter. Performance specifications of a typical production unit shall be as fol- lows: Measured sensitivity (SPL at 1 m [3.3ft] with 2.83V input, averaged from 500 Hz to 1.5 kHz) shall be at least 92 dB-S

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® c Control 28 High Output Indoor/Outdoor Background/Foreground Speaker Vertical 1/3 Octave Polars JBL Professional 8500 Balboa Boulevard, P.O. Box 2200 SS Control 28 Northridge, California 91329 U.S.A. CRP 20M A Harman International Company 5/97