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Technical Manual
4428
EXPLODED VIEW
1
12
14
ITEM
NO.
DESCRIPTION
1. Horn, HF/UHF, Pntd-4428
2. Network, HF/UHF, W/L-Pad-4428
3. Asy, Wfr-1200FE-8
4. Asy, Tweeter, XDCR-175ND-2
5. PTB, Crdbd, 2.5x4.75, 1/16THK-4425MKII 2
6. Cup, Grl-Hls/Studio II Ser
7. Cup, Term-4428
8. Gskt, Drv, 12"-PMTS
9. Network, LF-4428
10. Asy, Twtr-UHF-015M
11. Horn, HF, Rear, Pntd-4348
12. Nameplate-4428
13. Gskt, Horn, Throat, HF-4348
14. Grl, Frnt, Cab-4428
15. Gskt, UHF, Chipbd-4428
16. Gskt, Horn-4428
17. Screw (woofer to enclosure)
10-32 X 1-1/2, FIL, PH, BLK ZINC, LCS
18. Screw (UHF/horn)
6-32 X 3/8, BTN, HEX, NO FIN, SS
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.
JBL Consumer Products, 250 Crossways Park Drive, Woodbury, New York 11797
16
13
15
10
(4)
23
(2)
17
3
8
(8)
QTY.
PART NO.
1
351489-001
1
351410-001
1
339200-002
1
339811-001
47909-55
4
333249-001
1
351441-001
1
335481-001
1
351410-002
1
351265-001
1
339092-001
1
351491-001
1
339702-001
1
351440-001
1
351858-001
1
351359-001
8
804-01110-24
4
802-93056-06
(4)
18
4
4428 Cabinet – Not for sale
21
11
26
22
(3)
ITEM
NO.
DESCRIPTION
19. Screw (T Cup/HF Ntwk/Tie Wrap)
#6 X 3/4, OVHDPH
20. Screw (horn/cab)
10-32 X 1-1/4, SOC CAP, BLK ZINC, ALLOY
21. Screw (horn-frnt to rear)
10-32 X 1-1/4, PAN, PH, BLK ZINC, LCS
22. Screw (l-pad/cab)
8-32 X 2", FLT, PH, CLR ZINC, LCS
23. Bolt (drvr/rear horn)
1/4-20 X 3/4, CAP, CLR ZINC, MCS
24. Washer (horn/cab) #10, Type A, ZINC PL
25. Screw (LF ntwk)
8-32 X 1, PAN, PH, PB, BLK ZINC, LCS
26. Level Control (L-Pad) Label
27. Outer Carton
28. Top-Bottom Pads
29. Shorting Straps (set R-L)
24
20
19
2
7
29
5
9
6
25
(4)
QTY.
PART NO.
9
61867
6
874-33114-20
2
804-41110-20
3
803-11010-32
4
854-03001-12
24 843-00100-05
6
883-41110-16
1
351442-001
1
351490-001
2
351443-001
1
CS06-6
Rev1 9/2003
®
(6)
(6)
(1)
19
(4)
19
(4)
(2)
24
(18)
(6)
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