JBL 4428 Manuel utilisateur

4428

JBL Consumer Products, 250 Crossways Park Drive, Woodbury, New York 11797

Rev1 9/2003

Legend on Page 2

(2)

.250

.205

LF INPUT

.14mH

1.0mH

LP2

8ohm

LP1

8ohm

5.0mH L2

1.0mH

2uf

100V

.110

L.F.

U.H.F.

22uf

100V

1.2ohm

5W R6

10ohm

—

.205

1.0uf

100V

CROSSOVER

NETWORK

351410-001

CROSSOVER NETWORK

351410-002

HIGH-FREQUENCY

TRANSDUCER

339811-001

UHF TRANSDUCER

351265-001

LOW-FREQUENCY

TRANSDUCER

339200-002

GRN

GRN/BLK

RED

RED/BLK

R/W

BLK/WHT

ORN/BLK

ORN

0.1mH

5.1uf

100V

.250

H.F.

7.5ohm

10W

4.7ohm

10W

4.7ohm

10W

4.7ohm

—

.205

YEL

YEL/BLK

BLK

RED

BLK/WHT

RED/WHT

GRN/BLK

GRN ORN/BLK

ORN

YEL/BLK

YEL

10uf

100V C3

5.1uf

100V

PACKAGING 4428 WIRING DIAGRAM

4428 SCHEMATIC

Technical Manual

4428

ACOUSTIC & ELECTRICAL SPECIFICATIONS:

•Nominal Impedance 8 ohms

•Max Amp Power 200 watts*

•Frequency Response 40Hz – 40kHz (–6dB)

•Sensitivity 91dB (2.83V @ 1 meter)

•Crossover Frequencies 900Hz, 7kHz

SYSTEM COMPONENTS:

•Cabinet 4428 (not for sale)

•Grille 351440-001

•UHF Transducer 7/8" (22mm) 015M

351265-001

DC Resistance 6.7 ohms ±10%

•High-Frequency Transducer 1-3/4" (44.4mm) 175Nd-2

339811-001

DC Resistance 3.7 ohms ±10%

•Low-Frequency Transducer 12" (305mm) 1200FE-8

339200-002

DC Resistance 5.6 ohms ±10%

•Crossover Network – LF 351410-002

HF/UHF w/L-Pad 351410-001

AURAL SWEEP TEST SPECIFICATIONS:

•System Aural Sweep Test 6.0V Input 40Hz to 20kHz

•L.F. Aural Sweep Test 6.0V Input 20Hz to 1.5kHz

•H.F. Aural Sweep Test 2.83V Input 500Hz to 8kHz

•U.H.F. Aural Sweep Test 1.0V Input 5kHz to 20kHz

PHYSICAL SPECIFICATIONS:

•Enclosure dimensions 25" x 16" x 12-1/2"

(H x W x D) (plus 1" for horn mouth)

(635mm x 406mm x 318mm)

•Weight 71 lb (32.3kg) each

WARRANTY:

•Refer to Warranty Statement packed with each product.

*The maximum recommended amplifier power rating will

ensure proper system headroom to allow for occasional

peaks. We do not recommend sustained operation at these

maximum power levels.

4428 Cabinet – Not for sale

(1)

(4)

(2)

(8)

6223

116 15

10 1813 4

817 2614

(2)

219

(4)

(18)

(6)

(3) (4)

4428

JBL Consumer Products, 250 Crossways Park Drive, Woodbury, New York 11797

Rev1 9/2003

ITEM

NO. DESCRIPTION QTY. PART NO.

1. Horn, HF/UHF, Pntd-4428 1 351489-001

2. Network, HF/UHF, W/L-Pad-4428 1 351410-001

3. Asy, Wfr-1200FE-8 1 339200-002

4. Asy, Tweeter, XDCR-175ND-2 1 339811-001

5. PTB, Crdbd, 2.5x4.75, 1/16THK-4425MKII 2 47909-55

6. Cup, Grl-Hls/Studio II Ser 4 333249-001

7. Cup, Term-4428 1 351441-001

8. Gskt, Drv, 12"-PMTS 1 335481-001

9. Network, LF-4428 1 351410-002

10. Asy, Twtr-UHF-015M 1 351265-001

11. Horn, HF, Rear, Pntd-4348 1 339092-001

12. Nameplate-4428 1 351491-001

13. Gskt, Horn, Throat, HF-4348 1 339702-001

14. Grl, Frnt, Cab-4428 1 351440-001

15. Gskt, UHF, Chipbd-4428 1 351858-001

16. Gskt, Horn-4428 1 351359-001

17. Screw (woofer to enclosure) 8 804-01110-24

10-32 X 1-1/2, FIL, PH, BLK ZINC, LCS

18. Screw (UHF/horn) 4 802-93056-06

6-32 X 3/8, BTN, HEX, NO FIN, SS

ITEM

NO. DESCRIPTION QTY. PART NO.

19. Screw (T Cup/HF Ntwk/Tie Wrap) 9 61867

#6 X 3/4, OVHDPH

20. Screw (horn/cab) 6 874-33114-20

10-32 X 1-1/4, SOC CAP, BLK ZINC, ALLOY

21. Screw (horn-frnt to rear) 2 804-41110-20

10-32 X 1-1/4, PAN, PH, BLK ZINC, LCS

22. Screw (l-pad/cab) 3 803-11010-32

8-32 X 2", FLT, PH, CLR ZINC, LCS

23. Bolt (drvr/rear horn) 4 854-03001-12

1/4-20 X 3/4, CAP, CLR ZINC, MCS

24. Washer (horn/cab) #10, Type A, ZINC PL 24 843-00100-05

25. Screw (LF ntwk) 6 883-41110-16

8-32 X 1, PAN, PH, PB, BLK ZINC, LCS

26. Level Control (L-Pad) Label 1 351442-001

27. Outer Carton 1 351490-001

28. Top-Bottom Pads 2 351443-001

29. Shorting Straps (set R-L) 1 CS06-6

EXPLODED VIEW

Technical Manual

4428 ®

TO SERVICE THE 4428:

Remove the woofer; crossover network(s) and all drivers must be accessed through the woofer opening in the cabinet.

If L-Pad removal is necessary, the three screws for removal are located beneath the Level Control label. If the label

cannot be salvaged after removal, order part# 351442-001.

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