JBL 4428 Technical Manual Download Page 2

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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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