JBL 28T-60 user manual

Summary of the content on the page No. 1

High Output
®
Indoor/Outdoor
Background/Foreground Speaker
Control 28T-60
Professional Series
Key Features:
c Isolation transformer for
70.7V/100V distributed-line
sound systems
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
*Patents pending worldwide
®
The Control 28T is the largest of

Summary of the content on the page No. 2

® c Control 28T-60 High Output, Indoor/Outdoor, Background/Foreground Speaker Frequency Response in half-space with 70.7V input, taps #1 through #4. For 100V input, raise each curve +3dB. Beamwidth Directivity Index, Q Horizontal Off Axis Frequency Response Vertical Off Axis Frequency Response (up) Vertical Off Axis Frequency Response (down)

Summary of the content on the page No. 3

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: Usable frequency response shall extend from 55 Hz to 15 kHz (10 dB below rated sensitivity, in half-space, with no e

Summary of the content on the page No. 4

® c Control 28T-60 High Output, Indoor/Outdoor, Background/Foreground Speaker Vertical 1/3 Octave Polars JBL Professional 8500 Balboa Boulevard, P.O. Box 2200 SSCONTROL 28T-60 Northridge, California 91329 U.S.A. CRP 10M A Harman International Company 7/98