JBL Incorporated, 8500 Balboa Boulevard, P.O. Box 2200, Northridge, California 91329 U.S.A.
Technical Manual
JBL CONTROL 28T/WH
SPECIFICATIONS
ACOUSTIC & ELECTRICAL SPECIFICATIONS: |
SYSTEM COMPONENTS: (cont’d) |
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• Nominal Impedance: |
8 ohm |
• High Frequency |
25mm (1 in.) Polycarbonate |
• Power Capacity: |
175W Continuous Program |
Transducer: |
Dome Tweeter (123-10002-00) |
• Frequency Range: |
55 Hz to 15 kHz (–10 dB) |
• DC Resistance: |
5.0 ohm ±5% Copper Wire |
• Crossover Frequency: |
2.8 kHz |
• Crossover Network: |
338146-001 |
SYSTEM COMPONENTS: |
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AURAL SWEEP TEST SPECIFICATIONS: |
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• Cabinet: |
Not For Sale |
A. System Aural Sweep Test: |
7.0V Input, 20 Hz to 20 kHz |
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• Grille: |
128-00173-60 |
B. L.F. Aural Sweep Test: |
7.0V Input, 20 Hz to 1.2 kHz |
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• Low Frequency |
200mm (8 in.) Cone |
C. H.F. Aural Sweep Test: |
2.83V Input, 2 kHz to 20 kHz |
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Transducer: |
Transducer (124-58001-00) |
PHYSICAL SPECIFICATIONS: |
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• DC Resistance: |
5.3 ohm ±5% Copper Wire |
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• Enclosure Dimensions: |
375mm x 275mm x 215mm D |
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• Tap Settings: |
100V Line: Tap 1 = 7.5W, Tap 2 = 15W |
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(15.0 x 11.0 x 8.5 in. D) |
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Tap |
3 |
= 30W, Tap 4 is not used |
• Shipping Weight: |
25 lbs. 11 kg.) (in Pairs) |
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70V Line: Tap |
1 |
= 3.7W, Tap 2 = 7.5W |
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(Net Weight 12lbs. Each) |
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Tap |
3 |
= 15W, Tap 4 = 30W |
WARRANTY INFORMATION: |
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• Refer to Warranty Statement packed with each product. |
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PACKAGE |
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WIRING DIAGRAM |
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Warranty 59660 |
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Owners Manual 980-00024-00 |
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WHT |
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Speaker, |
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Foam Pad (2) |
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High Freq |
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991-00052-00 |
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123-10002-00 |
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WHT/BLK |
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Packaging |
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Network |
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Speaker, |
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338146-001 |
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Low Freq |
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124-58001-00 |
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Carton |
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YEL/BLK |
YEL |
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990-00040-00 |
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SCHEMATIC CONTROL 28 (338146-001) |
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R1 |
R2 |
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4 |
4 |
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WHT |
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SK3 |
SK3 |
C1 |
R3 |
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5 |
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2µ4 |
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H.F. |
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123-10002-00 |
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L1 |
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400µH |
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WHT/BLK |
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– |
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YEL |
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WHITE |
3 |
2 YEL |
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L2 |
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BLUE |
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1mH5 |
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RED |
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4 |
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VIOLET |
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5 |
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L.F. |
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ORANGE |
562-00026-00 |
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124-58001-00 |
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6 |
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INPUT |
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Switch |
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C2 |
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Not |
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6µF |
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546-00003-00 |
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BLK |
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Used |
1 GRN |
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YEL/BLK |
– |
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NOTE: INDIVIDUAL PARTS FOR THE ABOVE CROSSOVER ARE NOT AVAILABLE. |
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A COMPLETE REPLACEMENT ASSEMBLY SHOULD BE ORDERED. |
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SK3 LAMP IS AVAILABLE SEPARATELY. |
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<![endif]>JBL CONTROL 28T/WH REV H
07-04
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