JBL Professional 28 User Manual

Control

®

28

High Output
Indoor/Outdoor
Background/Foreground Speaker

Key Features:

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Components: 8” Polypropylene
coated woofer, 1” Titanium coated
horn loaded tweeter.

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Built-in InvisiBallTMmounting
hardware*

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Weather resistant enclosure and
transducers

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Readily paintable

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90° x 90° high frequency horn

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Overload Protection Circuitry

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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 bal­cony, outdoor theme & water parks,
or other applications where fore­ground/background music and pag­ing are required.

The unique and global patent
pending InvisiBall™ mounting hard­ware 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 hor­izontal 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 deter­rence as well.

The Control®28 readily accepts a
variety of paints and finishes to
match any decor.

Weather resistance is maximized by
coating the woofer cone in
polypropylene and terminating its cir­cumference in JBL’s WeatherEdge™, a
seamless, rubberized extension of the
woofer surround that provides added
protection to critical transducer ele­ments. The polycarbonate tweeter
diaphragm is reinforced with a thin
film of titanium for added rigidity and
endurance against sun, salt and mois­ture. Zinc plated grilles resist rusting
in the harshest conditions.

Available in black (Control 28) and
white (Control 28-WH).

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

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.

MTC-28/25CM: Ceiling-mount adapter.

1

Half-space (on-wall).

2

Continuous 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).

3

Half-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.

Professional Series

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)