Key Features, Speciﬁcations | JBL 28T-60 instruction

Control® 28T-60 High Output

Indoor/Outdoor

Background/Foreground Speaker

Professional Series

Key Features:

cIsolation transformer for 70.7V/100V distributed-line sound systems

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

cBuilt-in InvisiBall TM mounting hardware*

cWeather resistant enclosure and transducers

cReadily paintable

c90° x 90° high frequency horn

cOverload 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 bal- cony, outdoor theme & water parks, or other applications where fore- ground/background music and pag- ing 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 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.

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 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 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 Program2 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.

1Half-space (on-wall).

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).

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.