JBL Professional Car Speaker Control 28 User Manual

High Output  
Indoor/Outdoor  
®
Control 28  
Background/Foreground Speaker  
Professional Series  
Key Features:  
Components: 8” Polypropylene  
coated woofer, 1” Titanium coated  
horn loaded tweeter.  
Built-in InvisiBallTM mounting  
hardware*  
Weather resistant enclosure and  
transducers  
Readily paintable  
90° x 90° high frequency horn  
Overload Protection Circuitry  
Sensitivity: 92 dB SPL, 1W, 1m  
*Patents pending worldwide  
The Control® 28 is the largest of  
JBL Professional’s Control Contractor  
Series indoor/outdoor loudspeakers.  
Its rich sonic character makes the  
Control® 28 a perfect choice for  
restaurants, health clubs, under bal-  
cony, outdoor theme & water parks,  
or other applications where fore-  
ground/background music and pag-  
ing are required.  
Specifications:  
Frequency Range (-10 dB)1: 60Hz to 16kHz  
Continuous Program:  
Power Capacity2: 175 Watts  
Sensitivity3: 92 dB SPL, 1W, 1m  
Directivity Factor (Q): 7.5  
Directivity Index (DI): 8.8  
Nominal Impedance: 8 ohms  
Crossover Frequency: 2.8kHz  
LF Driver: 200mm (8 in) Polypropylene cone w/WeatherEdge  
HF Driver: 25mm (1 in) Titanium coated polycarbonate  
Enclosure Material: HIPS (High Impact Polystyrene)  
Overload Protection: Full-Range power limiting to protect network and transducers  
Termination: Spring terminals, accepts banana plug  
The unique and global patent  
pending InvisiBall™ mounting hard-  
ware is included in each system and  
makes short work of permanent  
installation. The InvisiBall™ mounting  
method adds the benefit of vertical  
rotation of up to 37° off-axis and hor-  
izontal rotation of up to 44° off-axis.  
Because InvisiBall™ adjustments are  
made through a hidden access  
behind the logo badge, the grill  
never needs to be removed and there  
exists a high degree of theft deter-  
rence as well.  
Environmental: Conforms to Mil Spec 810 for humidity, salt spray,  
temperature & UV. IEC 529 IP-X4 splashproof rating.  
Dimensions (H x W x D): 380 x 280 x 220 mm (15.0 x 11.0 x 8.6 in)  
Net Weight (ea): 5.5kg (12 lbs)  
Shipping Weight (pr): 11kg (25 lbs)  
Included Accessories: Invisiball Assembly  
6mm x 180mm hex key  
Optional Accessories:  
MTC-28V: For vertical columnar orientation of up to 3 loudspeakers  
MTC-28H: For horizontal splaying of two speakers. Three brackets array  
up to six loudspeakers in a 360° array.  
The Control® 28 readily accepts a  
variety of paints and finishes to  
match any decor.  
MTC-28/25CM: Ceiling-mount adapter.  
1Half-space (on-wall).  
Weather resistance is maximized by  
coating the woofer cone in  
2Continuous program power is a conservative expression of the system’s ability to handle normal speech and music  
program material and is defined as 3dB above the Continuous Pink Noise Rating (IEC-shaped pink noise with a 6dB  
crest factor, for 100 hours continuously).  
polypropylene and terminating its cir-  
cumference in JBL’s WeatherEdge™, a  
seamless, rubberized extension of the  
woofer surround that provides added  
protection to critical transducer ele-  
ments. The polycarbonate tweeter  
diaphragm is reinforced with a thin  
film of titanium for added rigidity and  
endurance against sun, salt and mois-  
ture. Zinc plated grilles resist rusting  
in the harshest conditions.  
3Half-space (on-wall), ave 100Hz to 10 kHz.  
JBL continually engages in research related to product improvement. Changes introduced into existing products without  
notice are an expression of that philosophy.  
Available in black (Control 28) and  
white (Control 28-WH).  
 
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-SPL. Usable frequency  
response shall extend from 60 Hz to 16 kHz (10 dB below rated sensitiv-  
ity, in half-space, with no external equalization). Nominal impedance  
shall be 8 ohms. The frequency dividing network shall have a crossover  
frequency of 2.8 kHz. Rated power capacity shall be at least 175 watts  
continuous program power, defined as 3dB above a test signal of filtered  
random noise conforming to international standard IEC268-5 (shaped  
pink noise with a peak-to-average ratio of 6dB), for 100 continuous  
hours duration.  
The system shall be protected against damage from occassional over-  
powering via full range series lamps that limits the power to the net-  
work and transducers. The high frequency transducer shall be horn-  
loaded to more evenly cover a nominal 90° horizontal by 90° vertical  
area.  
The enclosure shall be constructed of high-impact polystyrene for pro-  
tection against the elements in outdoor applications, and for paintability.  
The grille shall be completely zinc-coated for resistance against rusting,  
shall be bake-painted black, and shall be secured via screws to keep it  
in place when facing downward.  
The low frequency transducer shall have a polypropelene cone and a  
butyl rubber surround which shall extend seamlessly over the edge of  
the speaker frame for protection against the elements. The high frequen-  
cy transducer shall be constructed of polycarbonate, reinforced with a  
titanium film for additional weather resistance. The system shall with-  
stand Mil Spec 810 testing with specified time durations for exposure to  
the following environments with no effect on its acoustical performance  
or structural integrity: salt spray (method 509.3), temperature -19°C to  
49°C (method 501.3 and 502.3), 95% humidity (method 507.3) and ultra-  
violet (method 505.3). The system shall have a IEC 529 splashproof rat-  
ing of IP-X4.  
For theft deterrence, the installation access area shall be hidden  
behind a snap-out cover, and the access area shall be on the front of the  
loudspeaker for ease of installation and adjustment. The loudspeaker  
shall be rotatable over a minimum of ±35° in all directions via a ball-  
type mounting system. The ball mechanism shall be internal to the cabi-  
net to allow low-profile mounting and better stability via a short moment  
arm. The logo shall be rotatable for proper orientation when the loud-  
speaker is mounted horizontally or vertically.  
The external wiring connectors shall be spring loaded and gold plat-  
ed, and shall accept bare wire, single or dual banana-type connectors  
with 19 mm (3/4 in) spacing. Overall cabinet dimensions shall be no  
greater than 380 mm (15.0 in) high by 280 mm (11.0 in) wide by 220  
mm (8.6 in) deep and shall weigh no more than 5.5 kg (12 lbs).  
The finish shall be a paintable lighly textured black.  
The system shall be the JBL Model Control 28 with included  
InvisiballTM mounting system.  
 
®
Control 28 High Output Indoor/Outdoor Background/Foreground Speaker  
Vertical 1/3 Octave Polars  
JBL Professional  
8500 Balboa Boulevard, P.O. Box 2200  
Northridge, California 91329 U.S.A.  
SS Control 28  
CRP 20M  
5/97  
A Harman International Company  
 

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