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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.