JBL 28T-60 User Manual
Control
®
28T-60
High Output
Indoor/Outdoor
Background/Foreground Speaker
Key Features:
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Isolation transformer for
70.7V/100V distributed-line
sound systems
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Components: 8” Polypropylene
coated woofer, 1” Titanium coated
horn loaded tweeter
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Built-in InvisiBall
TM
mounting
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
*Patents pending worldwide
The Control®28T is the largest of
JBL Professional’s Control Contractor
Series indoor/outdoor loudspeakers.
Its rich sonic character makes the
Control®28T 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 Control 28T can
be used in either 70.7V or 100V
distributed-line sound systems. Taps
are provided at 60W, 30W and 15W
(plus a 7.5W tap for use on 70.7V
systems only).
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®28T 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 28T-60) and white (Control 28T-60-WH).
Specifications:
Frequency Range (-10 dB)1: 55Hz to 15kHz
Power Capacity: Components and Network: 175 Watts Continuous Program
2
Transformer: Per each listed tap rating
(IEC pink noise, 100 hrs)
Tap Settings: 100V Line: Tap 1 = 15W, Tap 2 = 30W
Tap 3 = 60W, Tap 4 is not used
70V Line: 0Tap 1 = 7.5W, Tap 2 =15W
Tap 3 = 30W, Tap 4 = 60W
Nominal Max Output by Tap: Tap Number 70.7V Input 100V Input
(dB-SPL @ 1m): Tap #1: 099 dB 102 dB
Tap #2: 102 dB 105 dB
Tap #3: 105 dB 107 dB
Tap #4: 107 dB (do not use)
Directivity Factor (Q): 7.5
Directivity Index (DI): 8.8
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): 6.5kg (14.3 lbs)
Shipping Weight (pr): 15kg (33 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
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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)
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