JBL CONTROL 28 Technical Manual

JBL Incorporated, 8500 Balboa Boulevard, P.O.Box 2200, Northridge, California 91329 U.S.A.

JBL CONTROL 28 REV G

PACKAGE

WIRING DIAGRAM

11-02

Technical Manual

JBL CONTROL 28

SPECIFICATIONS

ACOUSTIC & ELECTRICAL SPECIFICATIONS:

• Nominal Impedance: 8 ohm

• Power Capacity: 175W Continuous Program

• Frequency Range: 55 Hz to 20 kHz (–10 dB)

• Sensitivity: 92 dB SPL*

• Crossover Frequency: 2.8 kHz

SYSTEM COMPONENTS:

• Cabinet: Not For Sale

• Grille: 128-00173-60

• Low Frequency 200mm (8 in.) Cone
Transducer: Transducer (124-58001-00)

• DC Resistance: 5.3 ohm ±5% Copper Wire

*1 Watt (2.83 V RMS) @ 1 Meter

SYSTEM COMPONENTS:

(cont’d)

• High Frequency 25mm (1 in.) Polycarbonate
Transducer: Dome Tweeter (123-10002-00)

• DC Resistance: 5.0 ohm ±5% Copper Wire

• Crossover Network: 129-20020-01

AURAL SWEEP TEST SPECIFICATIONS:

A. System Aural Sweep Test: 7.0V Input, 20 Hz to 20 kHz
B. L.F.Aural Sweep Test: 7.0V Input, 20 Hz to 1.2 kHz
C. H.F. Aural Sweep Test: 2.83V Input, 2 kHz to 20 kHz

PHYSICAL SPECIFICATIONS:

• Enclosure Dimensions: 375mm x 275mm x 215mm D

(15.0 x 11.0 x 8.5 in. D)

• Shipping Weight: 31 lbs. (14 kg.) (in Pairs)

(Net Weight 13 lbs. Each)

WARRANTY INFORMATION:

• Refer to Warranty Statement packed with each product.

Warranty 59660
Owners Manual 980-00024-00

Foam Pad (2)
991-00052-00

Packaging

Carton
990-00040-00

Network
129-20020-01

SCHEMATIC CONTROL 28 (129-20020-01)

Speaker,
High Freq
123-10002-00

Speaker,
Low Freq
124-58001-00

RED

BLK

BLUE

BLK

R1
4

R2
4

R3
5

SK3 SK3

C1
2µ4

C2
6µF

L2
1mH5

L1
400uH

H.F.

123-10002-00

L.F.

124-58001-00

BLUE

BLK

RED

BLK

INPUT

2 Amp
Slow Blow
Pico Fuse
473002

NOTE: INDIVIDUAL PARTS FOR THE ABOVE CROSSOVER ARE NOT AVAILABLE.

A COMPLETE REPLACEMENT ASSEMBLY SHOULD BE ORDERED.
SK3 LAMP IS AVAILABLE SEPARATELY.

JBL CONTROL 28

JBL CONTROL 28

COMPONENT EXPLODED VIEW

Speaker,
High Freq
123-10002-00

Grille Assy
128-00173-60

SK3
Lamp (2)

“O” Ring

Gasket
(Ref)

Network
129-20020-01

Pivot
888-00026-00

Cabinet
(Not For Sale)

*

Hardware Kit

179-00005-00

Ball Mount Assy
179-00002-00

Screw (4)

*

Baffle Assy
(Not for Sale)

Speaker, Low Freq
124-58001-00

Screw (4)

*

Screw (2)

*

Hex Wrench
885-00039-00
6mm x 7

Logo
950-00005-00

Enclosure Plate
888-00025-00

Screw (4)

*

Screw (4)

*

Screw (6)

*

Grille
Spacer
389-00003-00

Nut 7/16 x 20 (2)

Blank Logo (Black)

950-00005-BK

Blank Logo

(White)

950-00005-WH